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Dissertations / Theses on the topic 'Panorama Images'

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Published: 5 June 2025

Last updated: 16 July 2025

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Maheux, Jean-Philippe. ""G.S.B.T.N.C.A.C.S.F.F.M.L.R.S.W.W.O.C.R.R.S.I.S.W.B.W." : panorama foisonnant." Master's thesis, Université Laval, 2018. http://hdl.handle.net/20.500.11794/32270.

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Ce texte constitue une analyse des motivations qui m’ont poussé à réaliser l’œuvre intitulée G.S.B.T.N.C.A.C.S.F.F.M.L.R.S.W.W.O.C.R.R.S.I.S.W.B.W. (2014- ). Cet ouvrage représente l’essentiel de ma recherche et se présente sous la forme d’un montage numérique de très grand format (290 000 x 85 000 pixels), réalisé avec un grand nombre d’images récoltées à l’aide de l’outil de recherche d’images du site web google.com. Prenant comme point de départ mes études en design graphique, il sera révélé comment la perception de l’image que j’y ai développée s’est progressivement érodée depuis les débuts de ma pratique artistique. On constatera que ce changement de perception m’a amené à défier certaines règles du design graphique et à privilégier l’image plurivoque, où le détail foisonne. The following text focuses on the motivations which brought me to create G.S.B.T.N.C.A.C.S.F.F.M.L.R.S.W.W.O.C.R.R.S.I.S.W.B.W. (2014- ). This single work constitutes the whole of my recent research and came into shape as a digital collage of great size (290 000 x 85 000 pixels). A large number of pictures taken from the internet have been used as material to build this work, most of which were found using google’s image search tool.Beginning with an analysis of my former perception of the image as medium, shaped by my studies in graphic design, this text increasingly reveals how my switch to visual arts helped to corrode the latter, and how it made me appreciate the more polyvocal images inside of which detail is flourishing.

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Kottamasu, V. L. Phanikumar. "User interaction of one-dimensional panoramic images for iPod Touch." Thesis, Linköpings universitet, Interaktiva och kognitiva system, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-86551.

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Modern handheld devices such as smart phones and tablets have become popular for capturing and viewing panoramic images, but navigation in these devices is a challenging task due to small screen size. In this thesis work, investigation is done for similarities and differences between two user interaction techniques of one-dimensional cubical panorama images. This work is carried out on a fourth generation Apple iPod Touch. The first user interaction technique swipe (drag-based panning) is developed using touch-gestures, while the second technique look-around (device-orientation panning) is developed using motion-sensors such as gyroscope and accelerometer for device-orientation. Both these techniques were implemented for touch-screen devices for an angle of 360 degrees. In the swipe technique, the navigation is done by using finger movements on the screen, while in the look-around based panning technique the navigation is done by moving the device direction physically in space through an angle of 360 degrees. The experiments were conducted on 20 participants for the two panning techniques. The results have shown that the look-around based panning technique offers a better user interaction compared to swipe based panning technique. Look-around based panning technique is natural and more free to move physically in space. Swipe based panning technique is easy to use in some situations and it does not require any physical space to move around the system.

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Baabd, A., M. Y. Tymkovich, and О. Г. Аврунін. "Image Processing of Panoramic Dental X-Ray Images." Thesis, ХГУ, 2018. http://openarchive.nure.ua/handle/document/6204.

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The panoramic image allows to clearly see the state of the teeth, the dental rudiments, which are located in the jaw, temporomandibular joints, as well as the maxillary sinuses. It is noted that this type of study has a small dose of radiation. Indications for this type of study are dental implantation, bite correction, suspicion of bone tissue inflammation, control of the growth and development of the teeth, as well as the diagnosis of other dental problems.

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Paulavičius, Andrius. "Automatinis vaizdų jungimas į panoramas." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2010. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2010~D_20100813_113336-11473.

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Šiame darbe pateikiamas apibendrintas automatinio vaizdų jungimo į panoramas algoritmas, detaliai aptariami algoritmo žingsniai ir galimas našumo didinimas lygiagretaus programavimo priemonėmis. Tyrime aprašyti vaizdų jungimo bandymai panaudojant kelias populiarų vaizdų bruožų alternatyvas. Taip pat pristatoma praktinė vaizdų jungimą panaudojanti aplikacija. This study presents a generalization of an automated image stitching algorithm, describes it's steps in great detail and discusses possible performance improvements by use of parallel execution. Results of stitching experiments using a couple of modern and popular image feature alternatives are shown. A practical application using an implementation of automated image stitching is presented.

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Gurrieri, Luis E. "The Omnidirectional Acquisition of Stereoscopic Images of Dynamic Scenes." Thèse, Université d'Ottawa / University of Ottawa, 2014. http://hdl.handle.net/10393/30923.

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This thesis analyzes the problem of acquiring stereoscopic images in all gazing directions around a reference viewpoint in space with the purpose of creating stereoscopic panoramas of non-static scenes. The generation of immersive stereoscopic imagery suitable to stimulate human stereopsis requires images from two distinct viewpoints with horizontal parallax in all gazing directions, or to be able to simulate this situation in the generated imagery. The available techniques to produce omnistereoscopic imagery for human viewing are not suitable to capture dynamic scenes stereoscopically. This is a not trivial problem when considering acquiring the entire scene at once while avoiding self-occlusion between multiple cameras. In this thesis, the term omnidirectional refers to all possible gazing directions in azimuth and a limited set of directions in elevation. The acquisition of dynamic scenes restricts the problem to those techniques suitable for collecting in one simultaneous exposure all the necessary visual information to recreate stereoscopic imagery in arbitrary gazing directions. The analysis of the problem starts by defining an omnistereoscopic viewing model for the physical magnitude to be measured by a panoramic image sensor intended to produce stereoscopic imagery for human viewing. Based on this model, a novel acquisition model is proposed, which is suitable to describe the omnistereoscopic techniques based on horizontal stereo. From this acquisition model, an acquisition method based on multiple cameras combined with the rendering by mosaicking of partially overlapped stereoscopic images is identified as a good candidate to produce omnistereoscopic imagery of dynamic scenes. Experimental acquisition and rendering tests were performed for different multiple-camera configurations. Furthermore, a mosaicking criterion between partially overlapped stereoscopic images based on the continuity of the perceived depth and the prediction of the location and magnitude of unwanted vertical disparities in the final stereoscopic panorama are two main contributions of this thesis. In addition, two novel omnistereoscopic acquisition and rendering techniques were introduced. The main contributions to this field are to propose a general model for the acquisition of omnistereoscopic imagery, to devise novel methods to produce omnistereoscopic imagery, and more importantly, to contribute to the awareness of the problem of acquiring dynamic scenes within the scope of omnistereoscopic research.

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Shi, Feng. "Panorama interpolation for image-based navigation." Thesis, University of Ottawa (Canada), 2008. http://hdl.handle.net/10393/27607.

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This thesis presents methods for novel image synthesis from cubic panoramas taken with multi-sensor cameras. The pre-captured cubic panoramas are used to interpolate arbitrary views to allow a virtual walkthrough of the remote real environment. In our approach, the "transfer" and "triangulation" methods are adopted to analyse the geometry of cubic panoramas and recover an accurate essential matrix between cubes. To generate a novel view between two aligned cubes, a warping model is applied to warp cubes to approximate navigation. This technique, called cube warping, works by simplifying the model of pixel displacements between cubes. A new raytracing-like image-based interpolation method is also proposed for free-viewpoint cube synthesis. Instead of attempting to recover dense reconstruction precisely, our method tries to reconstruct colours with colour invariance constraints. Due to the fact that photo consistency has more to do with colour than shape, our algorithm can generate a complete novel scene view with maximized photo consistency.

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Bissoli, Cleber Frigi [UNESP]. "Análise das medidas verticais em dentes humanos, mensurados in vitro e nas radiografias panorâmicas." Universidade Estadual Paulista (UNESP), 2004. http://hdl.handle.net/11449/98019.

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Made available in DSpace on 2014-06-11T19:29:12Z (GMT). No. of bitstreams: 0 Previous issue date: 2004-07-01Bitstream added on 2014-06-13T18:07:38Z : No. of bitstreams: 1 bissoli_cf_me_sjc.pdf: 1658392 bytes, checksum: 87521fc116b48dbe7d8b1a4b112dee4e (MD5) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) O propósito deste trabalho é analisar e verificar as medidas verticais de dentes humanos in vitro por meio de radiografias panorâmicas. O estudo foi baseado na montagem de uma boca com 28 dentes em um manequim de borracha, sendo utilizado para a realização das radiografias dois aparelhos ortopantomográficos (Rotograph plus e Panoura-10). O manequim, com o auxílio de suportes de madeira, foi radiografado com o plano oclusal paralelo ao horizontal, e também com seu plano oclusal à +5 graus e à -5 graus em relação ao plano horizontal. Os resultados obtidos indicaram que para a região de incisivos para o aparelho Rotograph plus a ampliação foi de 18,97% na maxila e 17,91% na mandíbula; para a região de pré-molares foi de 16,38% na maxila e 16,30% na mandíbula; e para a região de molares foi de 14,90% na maxila e 14,24% na mandíbula. Já para o aparelho Panoura-10 foi na região de incisivos 19,70% na maxila e 19,31% na mandíbula, na região de pré-molares 18,49% na maxila e 17,88% na mandíbula e para molares 16,66% na maxila e 16,17% na mandíbula. Conclui-se que houve ampliações diferentes nas regiões anatômicas estudadas. Posteriormente foi feito o teste estatístico ANOVA, e não houve diferenças estatisticamente significantes entre as inclinações de +5 graus e -5 graus em relação ao plano oclusal paralelo ao horizontal nos dois aparelhos (p>0,05). Também foi concluído que o aparelho Panoura-10 obteve 18,03% de ampliação vertical geral média e que o Rotograph plus obteve 16,45% de ampliação vertical geral média. The aim of this work is to analyze and to verify the vertical measurements of the human teeth in vitro by panoramic radiographs. The study was based in set up of 28 teeth in rubber manikin. The radiographs were made with two orthopantomographs (Rotograph plus and Panoura - 10). The manikin with wood supports was radiographic with oclusal plane parallel to horizontal plane and oclusal plane 5 degrees positive and 5 degrees negative to horizontal plane. The results has showed that in incisors region, in Rotograph plus, has enlarged 18,97 % for the maxilla and 17,91% for the mandible; in bicuspid region, 16,38% for the maxilla and 16,30%for the mandible; and molar region, 14,90% for the maxilla and 14,24% for the mandible. The Panoura - 10 has enlarged in incisor region, 19,70% for the maxilla and 19,31% for the mandible, mandible, in bicuspid region, 18,49 % for the maxilla and 17,88 % for the mandible and molar region 16,66 % for the maxilla and 16,17 % for the mandible. The conclusions were that different enlargements in anatomic regions studied occurred. The ANOVA test has known that significance statistical differences between the inclinations of +5 degrees and -5 degrees and oclusal plane parallel the horizontal plane in both (p>0,05) didn t happen. The Panoura - 10 has enlarged 18,03% in total vertical average and the Rotograph plus has enlarged, 16,45 % in total vertical average.

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揚國豪 and Kwok-ho Yeung. "Panorama interpolation for novel view composition." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2000. http://hub.hku.hk/bib/B31225433.

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Yeung, Kwok-ho. "Panorama interpolation for novel view composition." Hong Kong : University of Hong Kong, 2000. http://sunzi.lib.hku.hk/hkuto/record.jsp?B22823700.

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Sakakura, Celso Eduardo [UNESP]. "Reprodutibilidade diagnóstica das imagens radiográficas panorâmicas convencional e digitalizada invertida na detecção do teto do canal da mandíbula e do forame mentual." Universidade Estadual Paulista (UNESP), 2002. http://hdl.handle.net/11449/96220.

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Made available in DSpace on 2014-06-11T19:28:03Z (GMT). No. of bitstreams: 0 Previous issue date: 2002-02-28Bitstream added on 2014-06-13T20:57:39Z : No. of bitstreams: 1 sakakura_ce_me_arafo.pdf: 293566 bytes, checksum: b59ebffa797d41b6f4b75aa3ce197b82 (MD5) Com o advento do implantes, a precisa localização de estruturas anatômicas, dentre elas o canal da mandíbula e o forame mentual, tornou-se uma necessidade primordial para os implantodontistas. O objetivo deste trabalho foi avaliar a reprodutibilidade diagnóstica da imagem panorâmica convencional e digitalizada invertida na detecção do teto do canal da mandíbula e do forame mentual. Foi utilizada uma amostra de setenta e sete radiografias panorâmicas de edentados totais. Estas foram digitalizadas por meio de um escaner, tendo o brilho e o contraste ajustado, bem como a transformação em negativo. A área posterior ao forame mentual foi dividida em três regiões e a presença do teto do canal foi classificada em uma escala de confiança de cinco pontos. O forame mentual foi classificado segundo os critérios propostos por Yosue et al.74 (1989). Tanto a panorâmica convencional, como a digitalizada invertida foram avaliadas por três implantodontistas, previamente calibrados, em duas ocasiões distintas com intervalo mínimo de dez dias. A reprodutibilidade intra-examinador foi avaliada empregando-se a estatística Kappa (k), segundo Light (kL). A concordância intra-examinador, segundo Landis & Kock31, variou em sofrível, regular e boa; entretanto, não houve diferença estatísticamente significante na maioria das situações. Concluímos que os valores foram de baixa concordância por ponto e por intervalo de confiança, quando os três examinadores avaliaram a presença do teto do canal da mandíbula e do forame mentual. The knowledge of precise location of mandibular canal and mentual foramen are very important in mandibular implant surgery. The aim of this study was to evaluate the diagnostic reproducibility of conventional and negative digitized conventional panoramic images of superior wall of mandibular canal and mentual foramen. A sample of 77 edentulous patient's panoramic radiographs was used. These radiographs were digitized by a scanner with adjusted bright and contrast and it showed in a negative mode. The posterior segment behind mentual foramen was divided into three parts and the presence of the superior wall of mandibular canal was classified according to five points scale. The mental foramen was classified according to criteria of Yosue et al,77 (1989). The conventional panoramic and digitized radiographies were evaluated twice by three previously calibrated implantodontits. The intra-observer reproducibility was found using Kappa's statistic, according Ligth. The intra-observer agreement varied between bearable and good according to Landis & Kock. However, there was no significant difference. We observed low agreement in the Kappa's values.

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Salehi, Doolabi Saeed. "Cubic-Panorama Image Dataset Analysis for Storage and Transmission." Thèse, Université d'Ottawa / University of Ottawa, 2013. http://hdl.handle.net/10393/24053.

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This thesis involves systems for virtual presence in remote locations, a field referred to as telepresence. Recent image-based representations such as Google map's street view provide a familiar example. Several areas of research are open; such image-based representations are huge in size and the necessity to compress data efficiently for storage is inevitable. On the other hand, users are usually located in remote areas, and thus efficient transmission of the visual information is another issue of great importance. In this work, real-world images are used in preference to computer graphics representations, mainly due to the photorealism that they provide as well as to avoid the high computational cost required for simulating large-scale environments. The cubic format is selected for panoramas in this thesis. A major feature of the captured cubic-panoramic image datasets in this work is the assumption of static scenes, and major issues of the system are compression efficiency and random access for storage, as well as computational complexity for transmission upon remote users' requests. First, in order to enable smooth navigation across different view-points, a method for aligning cubic-panorama image datasets by using the geometry of the scene is proposed and tested. Feature detection and camera calibration are incorporated and unlike the existing method, which is limited to a pair of panoramas, our approach is applicable to datasets with a large number of panoramic images, with no need for extra numerical estimation. Second, the problem of cubic-panorama image dataset compression is addressed in a number of ways. Two state-of-the-art approaches, namely the standardized scheme of H.264 and a wavelet-based codec named Dirac, are used and compared for the application of virtual navigation in image based representations of real world environments. Different frame prediction structures and group of pictures lengths are investigated and compared for this new type of visual data. At this stage, based on the obtained results, an efficient prediction structure and bitstream syntax using features of the data as well as satisfying major requirements of the system are proposed. Third, we have proposed novel methods to address the important issue of disparity estimation. A client-server based scheme is assumed and a remote user is assumed to seek information at each navigation step. Considering the compression stage, a fast method that uses our previous work on the geometry of the scene as well as the proposed prediction structure together with the cubic format of panoramas is used to estimate disparity vectors efficiently. Considering the transmission stage, a new transcoding scheme is introduced and a number of different frame-format conversion scenarios are addressed towards the goal of free navigation. Different types of navigation scenarios including forward or backward navigation, as well as user pan, tilt, and zoom are addressed. In all the aforementioned cases, results are compared both visually through error images and videos as well as using the objective measures. Altogether free navigation within the captured panoramic image datasets will be facilitated using our work and it can be incorporated in state-of-the-art of emerging cubic-panorama image dataset compression/transmission schemes.

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Schneider, Rosália Galiazzi. "Panoramic e-learning videos for non-linear navigation." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2013. http://hdl.handle.net/10183/78474.

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Este trabalho introduz uma interface para estender vídeos educacionais com panoramas e navegação não-linear baseada em conteúdo. Em vídeos de e-learning convencionais, cada quadro está restrito ao subconjunto da cena capturado naquele momento. Isso torna difícil para o usuário revisitar conteúdos mostrados anteriormente, que podem ser essenciais para o entendimento dos conceitos seguintes. Localizar conteúdos anteriores nesses vídeos requer uma navegação linear no tempo, o que pode ser ineficiente. Estendemos vídeo-aulas para prover ao usuário o acesso direto a todo o conteúdo apresentado através de uma simples interface. Isso é feito pela detecção automática de pontos relevantes no vídeo e a criação de hyperlinks a partir desses pontos de maneira completamente transparente. Nossa interface constrói gradualmente um panorama clicável que mostra todo o conteúdo visto no vídeo até o dado momento. O usuário pode navegar pelo vídeo simplesmente clicando no conteúdo desejado, ao invés de utilizar a tradicional barra deslizante de tempo. Nosso panorama também pode ser exportado no final da execução, juntamente com anotações feitas pelo usuário, como um conjunto de notas de aula. A eficiência da nossa técnica foi demonstrada com a aplicação bem-sucedida a três categorias de vídeos que são representativas de todo o conjunto de vídeo-aulas disponíveis: Khan Academy, Coursera e aulas convencionais gravadas com uma câmera. Demonstramos que foi possível atingir os resultados em tempo real para vídeos de baixa resolução (320x240). No caso de resoluções mais altas, é necessário que a detecção de features (usando SIFT) seja feita em uma fase de pré-processamento. Como a parte mais custosa do nosso pipeline é extremamente paralelizável, acreditamos que a execução de vídeos de alta resolução em tempo real seja um resultado alcançável em curto prazo. As técnicas descritas nessa dissertação disponibilizam maneiras mais eficientes de explorar vídeos educacionais. Dessa forma, elas tem potencial para impactar a educação, disponibilizando experiências educacionais mais customizáveis para milhões de estudantes em todo o mundo. This thesis introduces a new interface for augmenting existing e-learning videos with panoramic frames and content-based non-linear navigation. In conventional e-learning videos, each frame is constrained to the subset of the lecture content captured by the camera or frame grabber at that moment. This makes it harder for users to quickly revisit and check previously shown subjects, which might be crucial for understanding subsequent concepts. Locating previously seen materials in pre-recorded videos requires one to perform visual inspection by sequentially navigating through time, which can be distracting and time-consuming. We augment e-learning videos to provide users direct access to all previously shown content through a simple pointing interface. This is achieved by automatically detecting relevant features in the videos as they play, and assigning them hyperlinks to a buffered version in a completely transparent way. The interface gradually builds panoramic video frames displaying all previously shown content. The user can then navigate through the video in a non-linear way by directly clicking over the content, as opposed to using a conventional time slider. As an additional feature, the final panorama can be exported as a set of annotated lecture notes. We demonstrate the effectiveness of our approach by successfully applying it to three representative styles of e-learning videos: Khan Academy, Coursera, and conventional lecture recorded with a camera. We show that we can achieve real-time performance for low-resolution videos (e.g., 320x240) on a single desktop PC. For higher resolution videos, some pre-processing is required for feature detection (using SIFT). However, since the most expensive parts of our processing pipeline are highly parallel, we believe that real-time performance might be soon achievable even for full HD resolution. The techniques described in this thesis provide more efficient ways for exploring the benefits of e-learning videos. As such, they have the potential to impact education by providing more customizable learning experiences for millions of e-learners around the world.

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Olubuyide, Oluwamuyiwa Oluwagbemiga 1979. "Security sphere : panoramic image acquisition." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/86695.

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Thesis (M.Eng. and S.B.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2001. Includes bibliographical references (p. 95). by Oluwamuyiwa Oluwagbemiga Olubuyide. M.Eng.and S.B.

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Yeo, Daxter Kai Loon. "Distortions in panoramic radiographs /." [St. Lucia, Qld. : s.n.], 2002. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16647.pdf.

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Wan, Sau Kuen. "Modeling with panoramic image network for image-based walkthroughs /." access full-text access abstract and table of contents, 2005. http://libweb.cityu.edu.hk/cgi-bin/ezdb/thesis.pl?mphil-cs-b1988588xa.pdf.

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Thesis (M.Phil.)--City University of Hong Kong, 2005. "Submitted to Department of Computer Science in partial fulfillment of the requirements for the degree of Master of Philosophy" Includes bibliographical references (leaves 81-84)

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Sedlo, Petr. "Korekce snímků." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-240843.

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This work is focussed on different unwanted effects that damage a digitally acquired image. An image acquired using a digital camera can suffer from a series of defects. First, the noise is concerned. It occures due to discretisation. Next, there are the defects including vignetting, radial image distortion, chromatic aberration. In my thesis I also worked on backlight image compensation and panorama creation from an image sequence. For backlight images we need to increase the brightness in the dark parts of the image, so that the details became more visible. At panorama creation we are careful about brightness evenness in partial images, which is usually not conserved and consequently we try to find a suitable boundary-line to connect images and smooth it. The fundamental part of my work was writing the algorithms that are able to compensate these defects at least partly. For this aim I took use of the Matlab environment.

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Audu, Abdulkadir Iyyaka. "Camera positioning for 3D panoramic image rendering." Thesis, Brunel University, 2015. http://bura.brunel.ac.uk/handle/2438/10444.

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Virtual camera realisation and the proposition of trapezoidal camera architecture are the two broad contributions of this thesis. Firstly, multiple camera and their arrangement constitute a critical component which affect the integrity of visual content acquisition for multi-view video. Currently, linear, convergence, and divergence arrays are the prominent camera topologies adopted. However, the large number of cameras required and their synchronisation are two of prominent challenges usually encountered. The use of virtual cameras can significantly reduce the number of physical cameras used with respect to any of the known camera structures, hence adequately reducing some of the other implementation issues. This thesis explores to use image-based rendering with and without geometry in the implementations leading to the realisation of virtual cameras. The virtual camera implementation was carried out from the perspective of depth map (geometry) and use of multiple image samples (no geometry). Prior to the virtual camera realisation, the generation of depth map was investigated using region match measures widely known for solving image point correspondence problem. The constructed depth maps have been compare with the ones generated using the dynamic programming approach. In both the geometry and no geometry approaches, the virtual cameras lead to the rendering of views from a textured depth map, construction of 3D panoramic image of a scene by stitching multiple image samples and performing superposition on them, and computation of virtual scene from a stereo pair of panoramic images. The quality of these rendered images were assessed through the use of either objective or subjective analysis in Imatest software. Further more, metric reconstruction of a scene was performed by re-projection of the pixel points from multiple image samples with a single centre of projection. This was done using sparse bundle adjustment algorithm. The statistical summary obtained after the application of this algorithm provides a gauge for the efficiency of the optimisation step. The optimised data was then visualised in Meshlab software environment, hence providing the reconstructed scene. Secondly, with any of the well-established camera arrangements, all cameras are usually constrained to the same horizontal plane. Therefore, occlusion becomes an extremely challenging problem, and a robust camera set-up is required in order to resolve strongly the hidden part of any scene objects. To adequately meet the visibility condition for scene objects and given that occlusion of the same scene objects can occur, a multi-plane camera structure is highly desirable. Therefore, this thesis also explore trapezoidal camera structure for image acquisition. The approach here is to assess the feasibility and potential of several physical cameras of the same model being sparsely arranged on the edge of an efficient trapezoid graph. This is implemented both Matlab and Maya. The quality of the depth maps rendered in Matlab are better in Quality.

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Lundberg, Emelie, and Mihajlovic Natalie Strandberg. "The use of panoramic images for identification of edentulous patients." Thesis, Umeå universitet, Institutionen för odontologi, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-154181.

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Introduction: Forensic odontology is a valuable tool in human identification processes. Antemortem radiographic examinations make it possible to use postmortem examinations for comparison. Aims: The overall aim was to determine the possibility to identify edentulous persons using panoramic examinations by I) investigating the possibility to match two panoramic radiographs of one person performed at two different occasions, II) determining what anatomical features are used as the base for matching III) investigating if there is a difference between oral and maxillofacial radiologists (OMR) and non- oral and maxillofacial radiologists (NOMR) in the ability to match the images, IV) determining if the time elapsed between the images to be compared affect the results or the confidence in the match. Materials and Methods: Panoramic image pairs from 19 patients examined twice at different occasions, plus 10 images from other edentulous patients comprised the material. The time elapsed between the image pairs varied between four months andsix years. Four OMR and four NOMR matched image pairs depicting the same patient. The participants marked each match as “certain”, “likely” or “possible” and what anatomical structure that was used for matching. Results:The OMR group had 100% correct matches and the NOMR group had 96%. The anatomy of the mandible was most used for matching. The OMR group was more certain in their decisions than the NOMR group. The time elapsed between the examinations did not affect the result or the confidence in the matches. Conclusion: Panoramic images can be helpful when identifying edentulous patients.

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Baptista, Renato Veras. "Espaços áridos da imagem: a fotografia panorâmica de Dimitri Lee." Pontifícia Universidade Católica de São Paulo, 2008. https://tede2.pucsp.br/handle/handle/5065.

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Made available in DSpace on 2016-04-26T18:17:11Z (GMT). No. of bitstreams: 1 Renato Veras Baptista.pdf: 10351172 bytes, checksum: 8dabe9208337bf77d9e7ad619d64b4f1 (MD5) Previous issue date: 2008-05-05 Servico Social do Comercio O presente trabalho tem como objeto a exposição "Templos Politeístas:" são fotografias panorâmicas do fotógrafo Dimitri Lee que apresenta estádios de futebol como arenas vazias e distorcidas. Faz parte do objeto um conjunto de depoimentos do fotógrafo, colhidos para um melhor entendimento de suas intenções na produção destas imagens. O trabalho analítico das imagens foi feito recorrendo-se à literatura do estudo da imagem fotográfico, da história da fotografia e da teoria da imagem, considerando conceitos como o conceito de 'estranhamento' de Viktor Shklovsky, o conceito do 'fotógrafo como funcionário e jogador 'de Vilém Flusser. A discussão sobre a presença da imagem é baseada nas reflexões de Hans Belting e Norval Baitello. Neste processo, apresentamos as imagens com destaque para as características de negação dos recursos de sedução como opção do autor, levantamos as técnicas utilizadas para à produção destas imagens, e sugerimos sistemas de classificação, como uma forma de situar estas imagens em um universo mais amplo, no qual as imagens dialogam entre si e podem ser avaliadas a partir de outras imagens

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Chen, Hui, and 陳輝. "Building panoramas from photographs taken with a hand-held camera." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2002. http://hub.hku.hk/bib/B31242923.

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Chen, Hui. "Building panoramas from photographs taken with a hand-held camera /." Hong Kong : University of Hong Kong, 2002. http://sunzi.lib.hku.hk/hkuto/record.jsp?B23668064.

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Hernandez, Mier Yahir. "Construction rapide d'images panoramiques applicables à l'exploration cystoscopique et à l'endoscopie de fluorescence en cancérologie." Thesis, Vandoeuvre-les-Nancy, INPL, 2007. http://www.theses.fr/2007INPL069N/document.

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Cette thèse propose un algorithme de mosaïquage pour la construction d'images panoramiques des parois internes de la vessie. Le temps de construction de ces images correspondant aux parties intéressantes de la vessie doit être inférieur à la durée d'un examen clinique standard. La méthode de mosaïquage doit aussi être robuste vis-à-vis des variabilités inter-examens liées aux patients et aux instruments. Ces images panoramiques pourront être utilisées par le clinicien comme référence pour guider des examens ultérieurs, pour l'archivage des données et pour suivre l'évolution des lésions. La première étape de l'algorithme est le pré-traitement des images cystoscopiques consistant en l'atténuation des inhomogénéités d'illumination et du motif de fibres optiques visible dans les images acquises par un fibroscope. La deuxième étape est le recalage des images. La solution retenue consiste en la corrélation par les transformées de Fourier des images qui fournit des translations initiales à un algorithme itératif basé sur la différence d'intensité entre les images. Ce dernier délivre les paramètres de la transformation perspective reliant deux images successives de la séquence. Dans la troisième étape nous projetons les images dans un repère commun en utilisant des transformations globales calculées avec les résultats des recalages. Nous utilisons un moyennage pondéré des intensités des pixels pour atténuer les bords visibles lors de la projection. Les résultats quantitatifs obtenus avec un fantôme et des résultats qualitatifs calculés pour des séquences réelles montrent que notre approche automatique de mosaïquage est robuste et rapide (temps compatible avec la durée d'un examen cystoscopique clinique). Nos tests ont également prouvé que l'algorithme de recalage fonctionne pour des transformations géométriques plus grandes que celles rencontrées typiquement entre images d'une séquence vidéo (90% de recouvrement entre images consécutives pour ces dernières) This work describes a mosaicing algorithm for constructing panoramic images of internal walls of the bladder. Time relating to the construction of panoramic images including the interesting parts must be shorter than that required by a standard cystoscopic examination. The mosaicing algorithm must be robust against lighting conditions, morphologic and texture variations relating to instruments and patient anatomy. These panoramic images could be used by a clinician for guiding further exams, storing non-redundant data and following-up evolution of lesions. The preprocessing of cystoscopic images is the first stage of the algorithm. Preprocessing consists of shading correction and fiber optics pattern attenuation occurring in fiberscope acquired images. The second stage is image registration. The chosen solution consist of cross-correlating images (using their Fourier transforms) in order to have initial translations for an iterative registration algorithm based on the sum of squared differences of images. In the third stage, images are projected in the coordinate system of the panoramic image using global transformations computed with matrices given by the iterative registration. We use a weighted average of pixel intensities to blend visible borders of images produced in the projection process. Numerical results obtained with a phantom and qualitative results obtained with real sequences show that our automatic approach is robust and allows for a fast construction of panoramic images in a period of time that is shorter than the duration of a clinical cystoscopic examination. Our experiments showed that the registration algorithm can handle geometric transformations that are larger than those existing typically in a video-sequence (90% of superposition between successive images in this case)

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Jackson, Joseph A. "Panoramic video for efficient ground surveillance from small unmanned air vehicles /." Diss., CLICK HERE for online access, 2007. http://contentdm.lib.byu.edu/ETD/image/etd1811.pdf.

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Кубашок, Володимир Петрович, та Volodymyr Kubashok. "Розробка та дослідження інформаційної системи реалізації методу 3D огляду навчальних аудиторій кафедри комп’ютерно-інтегрованих технологій ТНТУ ім. Івана Пулюя". Master's thesis, Тернопіль, ТНТУ, 2019. http://elartu.tntu.edu.ua/handle/lib/29774.

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Роботу виконано на кафедрі ком’пютерно-інтегрованих технологій Тернопільського національного технічного університету імені Івана Пулюя Міністерства освіти і науки України Захист відбудеться 26 грудня 2019 р. о 12 .30 годині на засіданні екзаменаційної комісії № 45 у Тернопільському національному технічному університеті імені Івана Пулюя за адресою: 46001, м. Тернопіль, вул.Руська, 56, навчальний корпус №1, ауд. 401 Кубашок В. П. Розробка та дослідження інформаційної системи реалізації методу 3D огляду навчальних аудиторій кафедри. 151 – автоматизація та комп’ютерно-інтегровані технології. – Тернопільський національний технічний університет імені Івана Пулюя. – Тернопіль, 2019. В магістерській роботі розроблено систему 3D туру по аудиторіям. Було розглянуто та проаналізовано основні принципи побудови та створення 3D огляду. Приведено принципи, приклади реалізації та елементи можливої оптимізації та розширення її функціональних можливостей. Kubashok V. P. Development and study of an information system for 3D inspection method implementation of the department of computer-integrated technologies classrooms of TNTU named after I.Puluj. 151 - Automation and computer-integrated technologies. - Ternopil National Technical University named after Ivan Puluj. - Ternopil, 2019. In the master's work, a system of 3D audience tours. The basic principles of constructing and creating a 3D survey were discussed and analyzed. The principles, examples of implementation and elements of possible optimization and expansion of its functionality are given. ВСТУП.....................................................................................................................7 РОЗДІЛ 1. АНАЛІТИЧНА ЧАСТИНА..................................................................8 1.1. Поняття 3D туру............................................................................................8 1.1.1. Загальні поняття 3D туру..................................................................8 1.1.2. Етапи створення 3D туру..................................................................10 1.2. Різновиди та особливості створення 3D туру...........................................11 1.2.1. Класифікація 3D турів......................................................................12 1.2.2. Види панорамних зображень...........................................................14 РОЗДІЛ 2. ТЕХНОЛОГІЧНА ЧАСТИНА...........................................................19 2.1. Інструменти та підготовка матеріалів.......................................................19 2.1.1. Інструменти для зйомки матеріалів........................................................20 2.2. Процес зйомки панорами............................................................................21 2.3. Огляд програм для створення 3D туру......................................................27 2.3.1. Програми для обробки зображень..........................................................28 2.3.2. Програми для створення панорамного зображення..............................28 2.3.3. Програми для створення 3D туру...........................................................29 РОЗДІЛ 3. КОНСТРУКТОРСЬКА ЧАСТИНА...................................................33 3.1. Обробка вихідних зображень.....................................................................33 3.2. Створення панорамного зображення.........................................................35 3.3. Створення 3D туру......................................................................................45 3.3.1. Формати виводу 3D туру..................................................................51 3.4. Загрузка віртуального туру на сайт...........................................................57 РОЗДІЛ 4. СПЕЦІАЛЬНА ЧАСТИНА................................................................61 4.1. Принцип побудови 3D графіки..................................................................61 4.2. Основні методи 3D синтезу........................................................................63 4.3. Метод синтезу 3D-псевдо стерео з 2D зображення.................................70 РОЗДІЛ 5. ОБГРУНТУВАННЯ ЕКОНОМІЧНОЇ ЕФЕКТИВНОСТІ..............75 5.1. Вдосконалення організації проектних досліджень..................................75 5.2. Планування та розрахунок затрат та капіталовкладень на проведення дипломного проекту.............................................................................................77 5.3. Розрахунок ціни розробки і економічна ефективність від використання програмного продукту..........................................................................................85 РОЗДІЛ 6. ОХОРОНА ПРАЦІ ТА БЕЗПЕКА В НАДЗВИЧАЙНИХ СИТУАЦІЯХ.........................................................................................................87 6.1.Охорона праці при роботі з ПК та контролерами.....................................87 6.2. Розрахунок заземлення...............................................................................90 РОЗДІЛ 7. ЕКОЛОГІЯ..........................................................................................93 7.1 Зелений офіс.................................................................................................93 7.2 Роль реклами у збереженні навколишнього середовища.........................97 ЗАГАЛЬНІ ВИСНОВКИ ДО ДИПЛОМНОЇ РОБОТИ...................................100 БІБЛІОГРАФІЯ....................................................................................................101

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Beck, Jonas, and Läthén Klas Brorsson. "Visualisering av brottsplatser." Thesis, Linköping University, Department of Science and Technology, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-6274.

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Detta arbete har gjorts i samarbete med Rikspolisstyrelsen för att ta fram en metod för hur modern medieteknik kan användas för att skapa en ”virtuell brottsplats”. Syftet är att arbetet ska leda till ett förslag till en metod som lämpar sig för att integrera i polisens brottsplatsundersökningar och rättsliga processer, med beaktande av de speciella krav som ställs.Arbetet innehåller två huvuddelar där den första delens utgångspunkt är vad som går att göra med utrustning och teknik som redan finns tillgänglig och den andra delen hur det skulle kunna utvecklas vidare. Till första delen har ett förslag på en metod som kan användas för att utnyttja panoramatekniken, tagits fram. Därför har det också genomförts utvärderingar och tester på befintliga programvaror för att utröna vad som passar syftet bäst. För den andra delen togs en egen lösning fram och implementerades i OpenGL/C++. Denna lösning baseras på laserskanningsdata. Resultatet av denna del är inte en färdig metod som kan börja användas direkt utan mer ett exempel på hur panoramatekniken kan användas till något mer än att bara visa hur en plats ser ut. För att knyta samman projektet med verkligheten har båda dessa delar tillämpats på flera riktiga fall.En slutsats som kan dras av arbetet är att visualiseringar av denna typ är väldigt användbara och till fördel för utredare och åklagare. Det finns mycket kvar att undersöka men det är ingen tvekan om att den här typen av teknik är användbar för detta syfte.

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Castro, Teresa. "Le cinéma et la vocation cartographique des images : questions de culture visuelle." Paris 3, 2008. http://www.theses.fr/2008PA030099.

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Comment se manifeste au cinéma la vocation cartographique des images ? Ancrée dans le domaine épistémologique de la culture visuelle, cette recherche se structure autour de deux éléments forts : l’existence d’une raison cartographique des images, manifestée dans et par des formes cartographiques, traduisant le passage de la carte lato sensu à la vocation cartographique des images. Il s’agit alors d’analyser les expressions cinématographiques de trois formes cartographiques : les panoramas, les atlas et les vues aériennes. Confrontant des objets très hétérogènes, issus de genres et de temporalités distinctes, l’analyse porte aussi bien sur des films de non-fiction de l’époque muette que sur des projets d’artistes contemporains, se fondant sur la mise en série d’images et le tissage de relations associatives. Si la vocation cartographique des images se manifeste au cinéma de façon très différente, elle semble relever de deux régimes de visibilité essentiels : un régime descriptif et un régime diagrammatique. Ces régimes renvoient à des façons distinctes d’envisager la représentation spatio-temporelle du monde, concernant globalement la fabrication et la création de points de vue, voire la création de nouvelles réalités. L’interrogation de la vocation cartographique des images permet, enfin, de révéler l’existence de deux rationalités cartographiques distinctes, l’une traversant le début du XXe siècle et l’autre le début du XXIe. Dépassant largement le domaine du cinéma, ces deux phénomènes sont liés à la prolifération de nouveaux dispositifs et technologies de l’image, ainsi qu’à des phénomènes de mondialisation How does the mapping impulse of images become apparent in the cinema? Conceived as an investigation in visual culture, this research is grounded on the following premise: the existence of a cartographic reason of images, expressed in and by cartographic shapes, illustrating the turn from “map” to “mapping impulse”. The enquiry is built on the analysis of the cinematographic expressions of three cartographic shapes: panoramas, atlases and aerial views. Confronting a welter of fi lms and images from different periods and genres, ranging from silent non-fi ction fi lms to contemporary artists’ projects, our discussion proceeds by accumulating visual objects and creating associations between them. If the mapping impulse of images is embodied in the cinema in many different ways, it seems to be related to two visibility regimes: a descriptive regime and a diagrammatic regime. Suggesting different ways of conceiving the spatiotemporal representation of the real, these visibility regimes concern the fabrication of points of view and, at times, the creation of new realities. The consideration of the mapping impulse of images eventually allows for the identifi cation of two cartographic rationalities, the fi rst spanning the fi rst decades of the 20th century and the second the beginning of the 21st century. If the implications of these cartographic rationalities go well beyond the fi eld of the moving image, both seem to be related to the proliferation of different image technologies and to globalisation as an historical phenomenon

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Rodríguez, Rodríguez Ramón de Jesús. "Street Art, Rechazo y Consolidación. La persistencia de la imagen y el pseudo objeto: génesis de la consolidación del Street Art en el panorama contemporáneo." Doctoral thesis, Universitat de Barcelona, 2014. http://hdl.handle.net/10803/145831.

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El Street Art será la espina dorsal sobre la que se articulará esta tesis doctoral, podremos extrapolar ciertas conclusiones y teorías desarrolladas en la presente tesis hacia aquellas opciones plásticas que surjan de la aceptación por parte de la sociedad de nuevas formas y códigos de expresión. La aceptación de los códigos no siempre está de acuerdo con las directrices de lo políticamente correcto, sucede un fenómeno de adecuación y adaptación mutua tanto por parte del Street Art hacia la sociedad y viceversa. Los códigos dentro del Street Art adquieren un carácter orgánico y se transforman junto con la sociedad que los requiere, al mismo tiempo esta corriente visual e ideológica se incorpora en la sociedad ejerciendo con su presencia transformaciones en la conducta hacia la aceptación de nuevas tendencias. El concepto de persistencia de la imagen será una constante en los procesos de adaptación de los nuevos códigos plásticos así como la idea que ello genera a través del objeto original, convertido en lo que llamaremos pseudo objeto. Mediante la insistencia repetitiva de la imagen, que llamaremos persistencia de la imagen, la belleza se reinterpreta en cada momento, sus parámetros son elásticos y adaptables ante quienes ven en ello un objeto de deseo. Por otro lado como elemento indispensable de la llamada persistencia de la imagen, encontramos un importante fenómeno que ayuda de manera inequívoca a la difusión de esa idea de imagen, hablamos del pseudo objeto. Un elemento que se separa de su imagen matriz y que adquiere las características de objeto por sí mismo; el pseudo objeto llega al público de una manera aséptica tras el filtro que supone el registro de la imagen, su manipulación y su puesta en escena. A través de las redes sociales, el pseudo objeto se convierte en persistente. Aquello que se ve, la imagen, es una dimensión alterada y extrapolada de la realidad. Convierte en bello lo cotidiano y urbano e influye en posteriores intervenciones de artistas en la propia calle. El concepto de lo bello varía según las necesidades de quienes lo requieren y con el Street Art se aprecia toda esta transformación de lo odiado a lo deseado. Desde los primeros momentos del Street Art, éste sobrevivió dentro de una cierta marginalidad en un tiempo muy corto con los nuevos medios de comunicación. El stencil, como reproductividad técnica seriada del Street Art, implica una plataforma de difusión de nuevos registros gráficos. Conceptos académicos intervienen en el stencil, y las nuevas corrientes adquieren una nueva vía hacia un cierto virtuosismo en la depuración de las formas, algo que permite al público general un acceso a los códigos anteriormente vetados gracias a la intervención de la publicidad. La difusión de sus códigos es inmediata en todo el mundo, se globalizan estilos, ideas y formas de interpretación. El concepto de belleza se globaliza nuevamente y se adapta a esos parámetros derivados del Street Art.

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Silk, Simon. "High Dynamic Range Panoramic Imaging with Scene Motion." Thesis, Université d'Ottawa / University of Ottawa, 2011. http://hdl.handle.net/10393/20394.

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Real-world radiance values can range over eight orders of magnitude from starlight to direct sunlight but few digital cameras capture more than three orders in a single Low Dynamic Range (LDR) image. We approach this problem using established High Dynamic Range (HDR) techniques in which multiple images are captured with different exposure times so that all portions of the scene are correctly exposed at least once. These images are then combined to create an HDR image capturing the full range of the scene. HDR capture introduces new challenges; movement in the scene creates faded copies of moving objects, referred to as ghosts. Many techniques have been introduced to handle ghosting, but typically they either address specific types of ghosting, or are computationally very expensive. We address ghosting by first detecting moving objects, then reducing their contribution to the final composite on a frame-by-frame basis. The detection of motion is addressed by performing change detection on exposure-normalized images. Additional special cases are developed based on a priori knowledge of the changing exposures; for example, if exposure is increasing every shot, then any decrease in intensity in the LDR images is a strong indicator of motion. Recent Superpixel over-segmentation techniques are used to refine the detection. We also propose a novel solution for areas that see motion throughout the capture, such as foliage blowing in the wind. Such areas are detected as always moving, and are replaced with information from a single input image, and the replacement of corrupted regions can be tailored to the scenario. We present our approach in the context of a panoramic tele-presence system. Tele-presence systems allow a user to experience a remote environment, aiming to create a realistic sense of "being there" and such a system should therefore provide a high quality visual rendition of the environment. Furthermore, panoramas, by virtue of capturing a greater proportion of a real-world scene, are often exposed to a greater dynamic range than standard photographs. Both facets of this system therefore stand to benefit from HDR imaging techniques. We demonstrate the success of our approach on multiple challenging ghosting scenarios, and compare our results with state-of-the-art methods previously proposed. We also demonstrate computational savings over these methods.

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Hernandez, Mier Yahir. "Construction rapide d'images panoramiques applicables à l'exploration cystoscopique et à l'endoscopie de fluorescence en cancérologie." Electronic Thesis or Diss., Vandoeuvre-les-Nancy, INPL, 2007. http://www.theses.fr/2007INPL069N.

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Tagoe, Naa Dedei. "Developing an accurate close-range photogrammetric technique for extracting 3D information from spherical panoramic images." Doctoral thesis, University of Cape Town, 2017. http://hdl.handle.net/11427/24932.

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Panoramic images (panoramas) are wide-angle images that provide fields of view of up to 360°. They are acquired with a specialised panoramic camera or by stitching a series of images captured with a conventional digital camera. Panoramas have widely been used to texture 3D models generated from laser scanning, for creating virtual reality tour applications, documenting landscape and cultural heritage sites, advertising real estates and recording crime scenes. The goal of this research was to develop an accurate close-range photogrammetric technique for the semi-automatic extraction of 3D information from spherical panoramas. This was achieved by developing a non-parametric method for the removal of distortions from images acquired from fisheye lenses as well as an algorithm, here referred to as the Minimum Ray Distance (MRD), for the fully automated approximate relative orientation of spherical panoramic images. The bundle adjustment algorithm was then applied to refine the orientation parameters of the panoramas; thus enabling accurate 3D point measurement. Finally, epipolar geometry theory was applied to the oriented panoramas to guide the interactive extraction of additional conjugate points. The MRD algorithm has been extended to laser scanning technology for the first approximations of laser scan setup positions and scan orientation prior to a leastsquares based registration. The determination of approximate scanner orientation and position parameters were accomplished using panoramic intensity images derived from full dome laser scans. Thus, a technique for the semi-automatic extraction of 3D measurements from panoramic images has been developed in this research. The technique is most appropriate for applications which do not require dense point clouds and in situations with limited access to funds or as a quick field method to document many features in a short time. This is because a single image orientation is required for several overlapping images as compared to the normal stereo or multi-image photogrammetric approach. It is not suggested that 3D reconstruction from spherical panoramic images should replace traditional close-range photogrammetry or laser scanning; rather, that the user of panoramic images will be offered supplementary information to the conventional and modern cultural heritage documentation approaches.

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Pin-YunChen and 陳品云. "Automatic Image Matching for Space Intersection of Spherical Panorama Images." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/v82dsv.

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碩士 國立成功大學 測量及空間資訊學系 105 People are paying more attention to the use of Spherical Panorama Images (SPIs) for its main advantage of wide field of view. Providing accurate location and orientation can enhance more metric application using SPIs. While the exterior orientation parameters (EOPs) of image stations are known, the coordinates of interested points can be determined by space intersection of multiple SPIs. In this study, a special platform called portable panoramic image mapping system (PPIMS) is used to obtain SPIs, and applied for photogrammetric mapping. This system equips with eight single lens cameras and one GNSS receiver, capturing surrounding information simultaneously. After system platform calibration, the images captured with PPIMS at the same image station are combined to be a complete SPI, and then used for mapping application instead of using original images. The EOPs of image stations can be calculated by the network adjustment with multiple SPIs. No matter in solving image station EOPs or space intersection process, conjugate points selection among overlapped images is necessary. Image matching is considered as an approach to obtain conjugate points much more efficient than manual measurement. In this study, an area-based image matching strategy for automatic conjugate point detection and point coordinate determination with multiple SPIs is proposed. The Sum of Normalized Cross-Correlation (SNCC) and Yet Another Reconstruction Dataprogram (YARD) index are used to check the similarity between images. Within the searching range, similarity profile is generated, and where the maximum similarity locates is regard as the object point position. To decrease the influence caused by scale variations and different FOV between images, the concept of matching in the object space is applied, which uses virtual surfaces for matching by adjusting the scale and perspective of original images, to enhance the matching accuracy. A test field with five SPIs was set for validation. The root mean square difference (RMSD) of five target points in three directions are (±0.006m, ±0.003m, ±0.004m) in space intersection result, which validates the availability of measurement application using PPIMS. In image matching experiment, four cases with different matching indices and match image type were test. The average maximum similarity of four cases are 0.380, 0.574, 0.573, and 0.696. The RMSDs of selected target points decrease from (±0.014m, ±0.033m, ±0.005m) to (±0.009m, ±0.002m, ±0.004m) with SNCC index, and from (±0.008m, ±0.027m, ±0.005m) to (±0.010m, ±0.008m, ±0.005m) with YARD index. The results reveal that better performance may be achieved using object space matching. This research shows the feasibility of spatial positioning of interested points with PPIMS SPIs in cm level accuracy, the proposed image matching strategy with PPIMS SPIs is applied and validated. The problem of scale variations and different FOV which causes problem in matching with original images can be improved by object space matching.

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Hsieh, Jo-Yuan, and 謝若元. "Acquisition of a Panorama from Several Blurred Images." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/14846762128637808220.

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碩士 國立臺灣大學 資訊工程學研究所 97 In this thesis, we try to stitch one clear image with a blurred image relative to a geometric transformation, and then recover the blurred image in the meantime. Image deblurring has long been a challenging work since it is an ill-posed inverse problem. Deblurring methods using multiple or single image are both discussed in recent years. The deblurring is called blind if the kernel is unknown or non-blind if the kernel is known a priori. In order to estimate the blur kernel, we try to take the information from the non-blurred patch for help. By stitching a blurred image with a non-blurred image using Speeded-Up Robust Features (SURF), we can obtain the aligned overlapped patches. Ideally, we can estimate the blur kernel based on blurred/non-blurred patches. However, directly stitching blurred/non-blurred images leads to poor aligned patches. As a result, the kernel is misestimated and the image is incorrectly recovered. To solve this issue, a pre-deblurring as a pre-processing step of the blurred image is considered. We stitch the pre-deblurred image with the non-blurred image and record the transformation parameters for temporary. After that we stitch the original blurred image with the non-blurred image using the recorded parameters to get better-aligned patches. Now the two patches are much better-aligned than before so that the kernel can be correctly estimated. Finally, promising result using progressive inter-scale and intra-scale deconvolution is presented.

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Ye, Jyun-Gu, and 葉俊谷. "Panorama Generation and Depth Estimation Based on Aerial Images." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/fd5csr.

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碩士 國立交通大學 資訊科學與工程研究所 106 In recent years, due to the progress of manufacturing technology of drone, the price of drone is not as expensive as ever, so that the people can easily afford. Drones are mainly used for aerial photography and taking pictures. The shooting coverage is much larger than that the traditional handheld camera can achieve. In this thesis, we propose an aerial panorama generation system using a drone with general photography devices. The aerial panorama can provide visual summary of the aerial scenes along the top of buildings. Our method provides a novel algorithm which by analyzing screen movement between consecutive frames, is able to estimate depth information and generate panorama images properly without requiring a depth camera and a constant flying speed. With estimated depth information, the produced aerial panorama images have much better visual quality than those without using depth information. In addition, the depth of aerial panorama provided in our system helps users get more 3D information about the buildings. Experiments conducted on real videos captured by drone demonstrate that satisfactory results can be obtained by the proposed aerial panorama generation system.

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Jiang, Jian-Li, and 江健利. "A Study On The Wireless Transmission Of Panorama 3D Images." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/60423689984053216305.

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碩士 萬能科技大學 電資研究所 103 This paper presents a real-time wireless transmission systems research that displays the panorama of 3D images as that of the photographer. The study includes the theoretical architecture design and the actual experimental realization of a complete wireless transmission system of the panorama 3D images. Overall research subsystems are images generation, image transfer, and image display. In the image generation subsystem, each group has two cameras to simulate the human eyes shooting. With synchronization, the video signal is divided into odd and even fields, to render the interlaced 3D images. Each camera group has viewing angle of 90 degrees, a total of four groups makes panorama effect. With four 5.8GHz wireless module, 3D-video signals are sent to the 3D image projector, Wearing the 3D glasses, you could feel like being in an immersive visual reality as that of the 3D-photographer. Thus we completed a real-time panorama 3D image transfer experimental system that synchronizes with the shooter side. 3D image viewing wireless transmission systems.

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Kuan-YingLin and 林冠穎. "Bundle Adjustment of Multi-station Spherical Panorama Images with GPS Positioning." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/66770851909022987867.

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碩士 國立成功大學 測量及空間資訊學系 102 In this study, we developed a portable panoramic image mapping system (PPIMS). It is designed for some areas that vehicle-based mapping systems are not allowed to enter, such as rugged terrains, forest areas, and etc. PPIMS is a specially designed platform equipped with eight cameras and a GPS receiver that it can capture eight images simultaneously with e-GPS positioning. When images are taken from multiple stations, a large amount of images are needed to handle and measure. Finding targets among images becomes a puzzled task. This study proposes a new concept of photogrammetry by using panoramic images. It not only breaks the limitation of FOV in traditional photogrammetry but also resolves the problem that handling a lot of images are confusing. Eight images captured with PPIMS can form an spherical panorama image (SPI), which is called PPIMS SPI. The PPIMS SPIs are then used for photogrammetric triangulation and mapping instead of using the original images. Because the collinearity condition is not rigorously kept that causes the gaps on the cutting edges of overlapped images. This study first proposes using SPIs in bundle adjustment to solve the orientation of stations and coordinates of conjugate points in the object space. Then we aim at the deficiency of PPIMS SPI to fix the imperfect geometry of PPIMS SPIs by coordinates of object points solved. And solve the orientation of stations and coordinates of conjugate points in the object space again until the convergence. Two experiments using PPIMS SPIs for bundle adjustment are done, and both their results are validated with check points. One is on the test field in Tzu-Chiang Campus, and another one is in the Eternal Golden Castle (EGC), which has the much complicated landscape. On the test field in Tzu-Chiang Campus, the RMSD values in three directions decreases significantly from (±0.321m, ±0.741m, ±0386m) to (±0.209m, ±0.376m, ±0.270m) after applying corrections for PPIMS SPIs. In EGC project, the RMSD values in three directions become consistent and are about 0.1 m after applying corrections for PPIMS SPIs. Both of them confirm bundle adjustment of SPI is possible, and applying corrections for PPIMS SPIs is necessary and effective for bundle adjustment. We also compare the results using SPIs with original images to understand their real differences. On the test field in Tzu-Chiang Campus, the maximum difference of rotation angles is about 0.03 degrees. Ignoring two unreliable check points, the maximum difference of check point coordinates is about 0.06 meters. In EGC project, the maximum difference of rotation angles is about 0.03 degrees, and all difference of check point coordinates are under 0.04 meters. The above confirms both results using SPIs are consistent with original images, that presents SPIs can replace original images in bundle adjustment.

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Chang, Cheng-Yueh, and 張正岳. "The Generation of 3D Point Clouds using Video-based Panorama Images." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/zduy7b.

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碩士 國立交通大學 土木工程系所 105 Panorama image is a 360-degree image covering the horizontal direction. The generation of the panorama image can be divided into (1) single-camera non-synchronous taking images, and (2) multi-camera synchronous taking images. Since the single camera is limited by the problem of non-synchronous taking images, in this study, five GoPro Hero4 cameras and one Nikon KeyMission360 camera with dual fisheye lenses were used for synchronous sampling. Because of the slight time lag problem in synchronous taking images, each camera implements time synchronous before stitching panorama images. The purpose of this study is to use multi-cameras and single-camera with dual lenses to take images in a video mode, then stitch each image to panorama images in the different projection modes. The last, implement image orientation recovery by combining multi-station panorama images and ground control points to generate 3D point clouds using image matching technique. The methodology includes four major parts, (1) panorama images generation, (2) image orientation recovery, (3) 3D point clouds generation with dense matching, and (4) Building Information Modeling (BIM) construction. First, panorama images generation is to extract tie-points from every overlapped image pair, so as to stitch to panorama images with the extracted tie-points. Second, image orientation recovery uses the Structure from Motion (SfM) algorithm. Third, 3D point clouds generation with dense matching is to dense match the tie points in the image space, and then calculate 3D points coordinates with the collinearity condition equation. The last, Building Information Modeling (BIM) construction is to construct modeling based on the generated 3D point clouds. This experiment analysis includes five steps, (1) the 3D point clouds from five GoPro Hero4 cameras in the number of different stations and the different projection modes. (2) the 3D point clouds from a Nikon KeyMission360 camera with dual fisheye lens. (3) the comparison of 3D point clouds accuracy. (4) the analysis of BIM construction, and (5) the co-registration or image-based 3D point clouds and the FARO terrestrial LiDAR point clouds. The experiments show that through the comparison of the 3D point clouds accuracy between five GoPro Hero4 cameras and one Nikon KeyMission360 camera, the relative error from a length in 3D point clouds and actual line is less than 3%. Moreover, the relative error of 3D point clouds-based BIM model in length, width and height are all less than 1.01%.

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Ho, Pei-Shiuan, and 何佩璇. "Smooth View Hopping between Two Images and Its Application to Panorama Walkthrough." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/70108382471566869953.

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碩士 國立臺灣大學 資訊工程學研究所 95 In this work, a framework relying on image-based rendering is presented for synthesizing intermediate views in the forward transition of two uncalibrated images without using explicit geometry information. First, the source and destination images are partitioned into regions. Each region is a presentation of the scene surface which can be approximated by a plane. To generate the intermediate views during the transition, each region is morphed according to its warping function individually. The warping function adopted here is derived from homography. Homography is estimated by using the corresponding feature points found by SIFT in the source and destination images. The morphed regions are combined to generate the intermediate image at a specific moment. Then the sequence of synthesized intermediate views can be played successively to produce smooth view hopping. Each morphed image can be further improved by zoom-blurring. Taking advantage of visual effect by zoom-blurring, the whole sequence of intermediate views would be more absorbing. We also introduce painting styles provided by non-photorealistic rendering, so that view hopping with artistic styles is also available in our framework.

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Ho, Pei-Shiuan. "Smooth View Hopping between Two Images and Its Application to Panorama Walkthrough." 2007. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0001-0207200713010600.

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Kao, Chi-Lung, and 高吉隆. "The Application of Spherical Panorama Images in Real Estate's 3D Space Virtual Tour." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/84331596029481168444.

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碩士 國立交通大學 管理學院碩士在職專班資訊管理組 94 Due to many new technology inventions for the Internet, everyone could enhance the website content along with the high expectation of the application usage. Since the Internet communication speed and bandwidth increases daily, it enables users to request the multimedia content to obtain the information. Among different multimedia format, the pre-recorded panorama images could present the real-life spatial scenery of the real estate on the Internet and allow the potential buyers to surf the details. Therefore, how to generate a good panorama images becomes an important topic. This study discusses the following two aspects: the convenience of creating panorama image processes and the accuracy of assembling images. During the creating panorama image processes, this study used the 183 degree fish-eye lens to catch up a broader view of the image and simplify the photographing process since a spherical panorama image only need two images for the complete view. Moreover, we used the rotation tripod to locate the lens at the center of rotation in order to avoid the dead angle at the center of the rotation position. In assembling process, we adjusted the images manually in order to keep the accuracy of jointed images. By changing the position of the fish-eye images, it immediately displays the seam change among the joint location. In addition, we used the rotation tripod to remain at the fixed angle position to shoot images and the image quality can be preserved for the assembling process. In summary, we used the following tools during this study: 183 degree fish-eye lens, the rotation tripod which takes the lens as the center of rotation and the self-developed software which can transform the fish eye image to the spherical panorama images. The whole spherical panorama images can then be created seamlessly and conveniently for the real estate usage on the Internet and some case studies are shown in this thesis.

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See, Zi Siang. "Creating high dynamic range spherical panorama images for high fidelity 360 degree virtual reality." Thesis, 2020. http://hdl.handle.net/1959.13/1411181.

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Research Doctorate - Doctor of Philosophy (PhD) This research explores the development of a novel method and apparatus for creating spherical panoramas enhanced with high dynamic range (HDR) for high fidelity Virtual Reality 360 degree (VR360) user experiences. The original contribution to knowledge which this study seeks to make, is a new application of human computer interaction techniques, applied in order to gauge and understand how user experience of interactive panorama images can be virtually operated with the aim of increasing fidelity, or high definition visual similarity and clarity, closest to the original scene depicted. In this context, the term ‘high fidelity’ refers to the aim of producing detailed and accurate HDR spherical panorama images which resemble the original scenes captured sufficiently to afford users a satisfactory and compelling VR360 user experience. A VR360 interactive panorama presentation using spherical panoramas can provide virtual interactivity and wider viewing coverage; with three degrees of freedom, users can look around in multiple directions within the VR360 experiences, gaining the sense of being in control of their own engagement. This degree of freedom is facilitated by the use of mobile displays or head-mount-devices. However, in terms of image reproduction, the exposure range can be a major difficulty in reproducing a high contrast real-world scene. Imaging variables caused by difficulties and obstacles can occur during the production process of spherical panorama facilitated with HDR. This may result in inaccurate image reproduction for location-based subjects, which will in turn result in a poor VR360 user experience. Such problems may include but are not limited to: parallax error, nadir angle difficulty, HDR ghosting effect, insufficient dynamic range and luminance preservation. In contrast, this study presents an HDR spherical panorama reproduction approach which can shorten the production process, reduce imaging variables, and keep technical issues to a minimum, leading to improved photographic image reproduction with fewer visual abnormalities for VR360 experiences. A user study has been conducted; this shows that the novel approach creates images which viewers prefer, on the whole, to those created using more complicated HDR methods, or to those created without the use of HDR at all. In an ideal situation for VR360 reproduction, the proposed solution and imaging workflow would allow multi-angle acquisition to be accomplished in less than a minute. The thesis is comprised of this critical exegesis of the use case study and practice-based research project as outline, with a creative component comprised of a unique set of VR360s presented using the proposed method and apparatus. I hope that the thesis will be of use to future scholars and practitioners, and to the general viewer as well.

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Chen, Wei-Cheng, and 陳韋成. "A New Rectangling Method for Panorama Images Using Scale-and-Stretch-Based Content-Aware Warping." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/99882478857466471481.

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碩士 國立中興大學 資訊科學與工程學系 105 The panorama images creating from stitching technique mostly have irregular boundaries. Photographer and common users generally prefer that panorama images have rectangular boundaries. To get this result, we can use the rectangling method like cropping or inpainting, but cropping method will lose the information outside the chosen inner rectangle and inpainting method will use the content that choose from the current image to fill up the missing area. These method will reduce or destroy the wide view of original panorama images. With this problem, the method of using warping to rectangling panorama images is developed. In this paper, we present a new rectangling method for panorama images using scale-and-stretch-based content-aware warping. The original warping method for panorama images consists of two steps. The first local step use mesh-free local warping to generate the irregular mesh on the input image. The second global step optimizes this mesh to get the rectangle result. Our proposed method modifies the global step based on significance map to allow diverting the distortion due to rectangling to unimportant area, such that the impact on perceptually important features is minimized. In order to protect more content, we modify the original significance map to get more effective information. In the experimental results, our proposed method can get the better result with the scale-and-stretch-based content-aware warping.

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Καρακατσάνη, Δουκένη. "Χαρτογράφηση υποθαλάσσιου χώρου από ψηφιακές φωτογραφίες". Thesis, 2010. http://nemertes.lis.upatras.gr/jspui/handle/10889/3886.

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Αντικείμενο της παρούσας διπλωματικής εργασίας είναι η δημιουργία πανοράματος από υποθαλάσσιες ψηφιακές φωτογραφίες που λαμβάνονται περιστρέφοντας μια φωτογραφική μηχανή στηριγμένη σε τρίποδο. Αναπτύσσεται μία μέθοδος δημιουργίας πανοράματος βασισμένη στην αντιστοίχιση σημείων των εικόνων. Η υλοποίηση πραγματοποιείται σε περιβάλλον Matlab. Αρχικά γίνεται μια εισαγωγή στις μεθόδους αποκατάστασης ενός περιβάλλοντος από εικόνες και στη συνέχεια παρουσιάζονται οι βασικές μέθοδοι δημιουργίας πανοραμάτων. Η διαδικασία της υλοποίησης περιλαμβάνει την ευθυγράμμιση των φωτογραφιών, με αντιστοίχιση των κοινών σημείων τους χρησιμοποιώντας μια μέθοδο ετεροσυσχέτισης και την συρραφή τμημάτων των εικόνων για τη δημιουργία του πανοράματος. Η αντιστοίχιση γίνεται πρώτα υπολογίζοντας μόνο την οριζόντια μετατόπιση και στη συνέχεια υπολογίζοντας την οριζόντια και την κάθετη μετατόπιση. Στο τέλος αναπτύσσεται μια μέθοδος υπολογισμού της τρισδιάστατης μετατόπισης μιας κάμερας που κινείται ευθύγραμμα με κατεύθυνση προς το αντικείμενο --

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Sarangi, Ishan Kumar, and Sudarshan Nayak. "Image mosaicing of panoramic images." Thesis, 2014. http://ethesis.nitrkl.ac.in/6455/1/E-58.pdf.

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Image mosaicing is combining or stitching several images of a scene or object taken from different angles into a single image with a greater angle of view. This is practised a developing field. Recent years have seen quite a lot of advancement in the field. Many algorithms have been developed over the years. Our work is based on feature based approach of image mosaicing. The steps in image mosaic consist of feature point detection, feature point descriptor extraction and feature point matching. RANSAC algorithm is applied to eliminate variety of mismatches and acquire transformation matrix between the images. The input image is transformed with the right mapping model for image stitching. Therefore, this paper proposes an algorithm for mosaicing two images efficiently using Harris-corner feature detection method, RANSAC feature matching method and then image transformation, warping and by blending methods.

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Li, Wei-Chun, and 李韋均. "Image Stitching and Panoramas Applied to Biomedical Images." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/72188769222471549717.

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碩士 國立臺灣大學 生醫電子與資訊學研究所 97 The technique of image stitching is made up for a better range of a picture’s view for humans. It can be applied to many specific fields. How to make it fast, simple and accurate thus becoming a very important issue. In this thesis, we introduce the image stitching technique also called panoramas. Then implement it and apply it to different types of images. Especially on the field of biomedical images to verify that our method is effective and efficient.

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LI, KUN-LIN, and 李昆霖. "Applying Technology Acceptance Model to Explore the Relationship between Browsing Experience, Perceived Benefits, and Visit Intention of the Panorama Images Website’s Users: The Case of "View Taiwan 360"." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/qxdcvk.

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碩士 逢甲大學 景觀與遊憩碩士學位學程 107 With the development of network technology and the assistance of sophisticat-ed shooting skills, panorama images website has been gradually applied by tourism industry to the introduction and marketing of scenic spots, and there may be virtual tourism-related extension products in the future combined with virtual reality. Re-viewing the past literatures, most of the previous researches on panorama images are based on scientific and technological theories such as how to form images, and less on the perception and behavioral intentions of panorama image users. This research mainly takes users who have used "View Taiwan 360" panorama image Website as the research object. Referring to relevant literature in the past, this research collates the measurement questions of perceived ease of use, perceived usefulness, browsing experience, perceived benefits and visit intention, and adopts convenient sampling method to conduct questionnaire interviews. A total of 430 valid questionnaires were collected and then analyzed by SPSS statistical software to construct the relationship between each other. The results show that perceived ease of use has a positive linear relationship with perceived usefulness; perceived usefulness has a positive linear relationship with tourism intention; perceived usefulness has a positive linear relationship with browsing experience; perceived ease of use has a positive linear relationship with browsing experience; perceived usefulness has a positive linear relationship with perceived benefits; perceived ease of use has a positive linear relationship with per-ceived benefits; Browsing experience has a positive linear relationship with per-ceived benefits. Among them, perceived ease of use has a greater impact on the overall effect of other variables; the "thinking experience" structure of browsing ex-perience and the "Entertaining" structure of perceived benefits has a greater impact on visit intentions; the "sensory experience" structure of browsing experience has a greater impact on perceived benefits. Based on the above results, this study provides suggestions for website manag-ers, mainly to enhance the usability and usefulness of panorama image Website, and to enhance the quality of the sensory experience of panorama image Website in or-der to enhance the perceived benefits of users; to enhance the quality of thinking ex-perience that can make users feel interesting, pleasant and curious can attract more website users to go travel.

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Liao, Wei-Sheng, and 廖偉勝. "A Spherical Panorama Image System." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/mutx37.

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碩士 國立臺北科技大學 資訊工程系研究所 98 In this paper, we implement a video-based spherical coordinate conversion system, through the combination of OpenGL which have the 3D stereo effect and OpenCL massive parallel computing power to achieve an interactive real-time 3D virtual scene image. Due to the general everyday life single photo taken with the camera view is very limited in scope, in order to get a larger image view even can reach 360 degrees surround effect we usually use image stitching (Image Stitching) technology rather than pictures of the scene adjacent joints. Here we use OpenCL parallel computing techniques to immediately convert multiple images into a panorama texture and present it as a 3D model, compared to traditional CPU approach, we can tell that the more images to process the better efficiency of parallel computing we can get. During the experiment, it shows that when we use NVIDIA 9600GT to process eight 640*480 images, OpenCL can at most enhance efficiency up to ninety times to be able to achieve real-time interaction.

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HSU, KENG-HSUAN, and 許耕瑄. "Collection of City-Scale Panoramic Street Images and Image-Based Localization." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/30867540123444731817.

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碩士 國立暨南國際大學 資訊工程學系 104 Panoramic images are very important way to record and watch scene views. It not only record rich spatial information, but also have many advantage through many applications now day. For example, Google street view, many and many hand hold video cameras contain panoramic images service which use picture stitch method to create panoramic images, 3D structure of building inside view on estate website, museum tour service, etc. Since google released Google Street View services, user can see any street view who want by just sits in front of computer and clicks mouse, and due to this, this service is admired and popular by users. Street view shot are very valuable, street view can let people see history of city and scene change. It also a good reference for historical sites recovery, city planning, etc. In this thesis, we capture temporal street view using ladybug 3 camera mounted on a car. Build four-dimesional image database by adding time dimension, store panoramic image into front-end NAS server, and offer user upload images to find its location, or see history data image by GPS coordinate. Also, we use Bundler to build 3D city reconstruction, store point cloud from those images, for future research and application.

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Jen-Fu, Huang, and 黃禎福. "Panoramic Image Mosaics." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/47454077697623180701.

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Cheng, Li-Kuan, and 鄭麗寬. "A Study on Panorama Image Navigation System Design." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/d3tjdx.

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碩士 國立宜蘭大學 多媒體網路通訊數位學習碩士在職專班 106 Life is just like a colorful journey, and everyone is a photographer. We went through the changes of the time, which have brought new as well as authentic experiences to those users by virtue of the interdisciplinary integration of social virtual reality, and the technique of panoramic camera. Based on the idea that local people have to record reginal images, my research is aimed to use the concepts of ‘’anywhere door” & ”time capsule” of Doramon to design and plan a guide service system. My research methodology includes “documents analysis”, “prototyping”, ”interview survey” , enabling me to discover the problems through the process and solve them at the same time. My goal is to build a interacting-guide system which has the function of memorization and it can be used in anywhere and be applied to some other related design fields. My research findings include that (1) We have to pick a wide and bright area when we want to take panorama photos. (2) Compare to normal photos, interviewer prefer use panorama photos. Nevertheless when we want to show close-up shot of sites, normal photos are more appropriate. (3) Uploading panorama photos of plants growth process will make viewers feel a hand-on expereince; while running a fan page can motivate purchasing desire. (4) To manage a panorama website, we have to offer a free upload space, cut the overhead, and enhance the features of words, pictures, media, anywhere door, map ,interaction and personal feelings of travel. Consequently, It can make this personal panorama website more efficent in viewer orientation.

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Liao, Pei-Cheng, and 廖培成. "2D Floorplan Generation from Panoramic Images." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/19456017494881842205.

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碩士 國立臺灣大學 資訊工程學研究所 103 This thesis proposes a semi-automatic method that generates a 2D floorplan from cylindrical panoramic images in indoor public area. Nowadays, digital maps are common for outdoor, but people also need indoor map when entering a new building. Popular reconstruction methods like structure form motion (SfM) often need sufficient and robust features, which are lacked in many indoor environments. Our purposed method is improved by the shape generation algorithm [1] can overcome featureless conditions. The input panoramic images are separated by corner selection from a user and generate corner rays from the panorama centers to corner positions. The shape generation algorithm connects adjacent corner rays to generate shapes, and then the shapes are combined to the floorplan. Nevertheless, the said algorithm has some problems; for example, it cannot find the correspondence to combine and is limited to the Manhattan world assumption. In order to solve these problems, we present two methods: wall matching and floorplan refinement. Wall matching will correlate the wall correspondence that the wall is separated by corners. We apply the geometry and image similarity to find the best wall correspondence, and then combine the shapes to the floorplan. However, when our method computes shape combination, the error is generated from shape generation and propagates to next shape, leading overall floorplan to the inaccurate result. Therefore, we develop the corner-line minimization in least square method that is a robust floorplan refinement algorithm to get more accurate result. Finally, the method can be used to generate indoor floorplan in featureless and non-Manhattan world scene. We also demonstrate results on several challenging datasets, and the results of floorplan are similar to ground truth.

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