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Kang, Ju Young. "Application of morphing technique in rapid generation of ship hulls and other forms". Thesis, University of Strathclyde, 2011. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=15657.
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Lapuh, Rok. "Mesh Morphing Technique used with Open-Source CFD Toolbox in Multidisciplinary Design Optimisation". Thesis, Uppsala universitet, Institutionen för informationsteknologi, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-348873.
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Nowadays, the product design process relies on computer simulations more than ever. Compared to the experimental tests, they allow substantially more designs to be evaluated. Moreover, computer simulations allow a search for the optimum. That is why a fast and efficient transition from one design iteration to the next is necessary. For design evaluation in the aerospace industry, Computational Fluid Dynamics tools are used, where finite volume meshes are computationally expensive to create. Instead of recreating them for each product design during an optimisation process, it is much faster to morphone design into the next one. Here an algorithm for mesh morphing based on radial basis functions is presented. Its implementation is evaluated for mesh quality and performance. Mesh morphing of NURBS surfaces, a continuous representation of a given model geometry, together with discrete meshes is proposed next. Lastly, the implementation of the morphing algorithm is linked with a fluid flow solverand an optimisation suite. All three programs are used together to optimise a product coming from the aerospace industry.
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El, Habachi Aimad Abdeslam. "Propagation de la variabilité de la morphologie humaine sur le débit d'absorption spécifique en dosimétrie numérique". Phd thesis, Supélec, 2011. http://tel.archives-ouvertes.fr/tel-00583723.
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Dans ce mémoire, nous étudions l'exposition aux ondes électromagnétiques l'échelle d'une population. Cette étude est réalisée pour une exposition à une onde plane orientée frontalement sur des modèles anatomiques du corps humains (fantômes) avec une puissance incidente de 1W/m2 et une fréquence de 2.1 GHz. Pour ce faire, l'idée est de construire un modèle du WBSAR (Whole Body averaged Specific Absorption Rate) en fonction de lamorphologie. Les facteurs morphologiques influençant le WBSAR ont été identifiés à l'aide des fantômes existant dont le nombre se limite à 18 et des modèles de régressions. Cette analyse préliminaire montre que les facteurs morphologiques externes (taille, poids ...) seuls ne suffisent pas pour construire un tel modèle, mais l'introduction des facteurs morphologiques internes (muscles, graisse ...) est nécessaire. L'absence de données statistiques sur les facteurs morphologiques internes de populations nous a conduits à intégrer des connaissances apriori sur ces facteursafin d'étudier l'exposition d'une population donnée. Des lois paramétriques usuelles et des mélanges de gaussiennes sont utilisés pour modéliser ces facteurs internes afin d'étudier leur influence sur le quantile du WBSAR à 95 %.L'utilisation des fantômes homogènes où le fantôme homogène est obtenu en remplaçant tous les tissus internes par un unique tissu équivalent. Ces fantômes homogènes permettent de s'affranchir de l'influence de la morphologie interne dans un modèle du WBSAR et facilitent également leur déformation par une technique de morphing. Ainsi nous avons pu enrichir la base de fantômes existant. Pour donner une estimation du quantile du WBSAR à 95 %, nous avons mis en place un plan d'expériences séquentiel qui repose sur un modèle paramétrique du WBSAR et l'inférence bayésienne et qui permet de raffiner la région à 95 %. Cette approche nous a permis de trouver le quantile à 95 % pour une population et un exemple de fantôme correspondant. Cependant, cette approche ne permet pas d'obtenir une estimation de toute la distribution du WBSAR. Afin d'obtenir une estimation de toute cette distribution, nous avons construit une surface de réponse en utilisant les polynômes de chaos. Dans l'objectif d'obtenirdes résultats cohérents nous avons effectué un changement de variables permettant de traduire les connaissances physiques dans cette surface de réponse.
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Hatch, Wesley. "High-level audio morphing strategies". Thesis, McGill University, 2005. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=83108.
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This thesis presents high-level strategies for controlling existing audio morphing algorithms. Prominent methods for spectrally representing audio data in the context of audio morphing are surveyed, and techniques involving manipulating and interpolating additive models are explored. Additionally, a combination of past audio-morphing approaches (sinusoidal morphing techniques as well as techniques taken from an MFCC approach) are employed in order to facilitate any type of sonic input. The system presented herein is meant to accommodate a wide range of inputs, and will adjust the impact of a high-level feature depending on the type and quality of the input.**This dissertation is a compound document (contains both a paper copy and a CD as part of the dissertation).
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Mesquita, Pedro Alexandre Vieira. "Morphing techniques for representation of geographical moving objects". Master's thesis, Universidade de Aveiro, 2013. http://hdl.handle.net/10773/11989.
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Mestrado em Engenharia de Computadores e TelemáticaUm objeto móvel é uma entidade cuja posição e forma se alteram continuamente ao longo do tempo. Tais objetos existem no mundo real e é possível capturar amostras discretas destes utilizando por exemplo imagens de satélite. Essas capturas representam estados do objeto em diferentes instantes de tempo. Cada amostra discreta é representada por um conjunto de pixels. Para representar o movimento dos objetos é necessário extrair uma representação vetorial dessas capturas e aplicar técnicas de morphing para modelar a transformação dos objetos. Nesta dissertação são apresentados dois métodos de morphing para representar o movimento de objetos em bases de dados espácio-temporais. Foram ainda desenvolvidas ferramentas para automatizar o processo de segmentação a partir de sequências de imagens reais (fotos de satélite). Estas ferramentas são um primeiro passo para a criação de conjuntos de dados reais com uma dimensão significativa que possam ser utilizados para testar e validar os algoritmos de representação de objetos móveis em bases de dados. Os trabalhos nesta área têm-se focado na criação de representações de objetos móveis válidas e não consideram aspectos qualitativos como a deformação dos objetos durante as transformações. As experiências têm sido realizadas utilizando apenas dados sintéticos.
A moving object is an entity whose position and shape are continuously changing over time. Such objects exist in the real world and it is possible to capture discrete samples of them using for example satellite images. Those captures represent the characteristics of the object at different time instants. Since each snapshot is in raster mode, it is necessary to extract a vectorial representation of those captures and to apply morphing techniques to model the transformation of the objects between snapshots. In this dissertation two morphing methods are used to represent the movement of an object. The development of tools to improve and automate the process of segmentation from sequences of real images (satellite images) was also one of the focuses of this work. These tools are a first step for the generation of real world datasets with significant size that can be used to test and validate the algorithms to represent moving objects in databases. This is an important issue because previous works have focused on creating valid movement data representations at all times and do not consider qualitative features such as the objects’ deformation during the transformations. The experiments were limited to synthetic datasets.
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Paulo, Luís Carlos Marques. "Morphing techniques in spatiotemporal databases : Aplicação de técnicas de morphing em bases de dados espacio-temporais". Master's thesis, Universidade de Aveiro, 2012. http://hdl.handle.net/10773/12339.
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Mestrado em Engenharia de Computadores e TelemáticaCom o desenvolvimento das tecnologias de captura remota de dados permitindo a captura e transmiss~ao de dados geo-referenciados ao longo do tempo, apareceram muitas aplica c~oes que necessitam de ferramentas para tratamento de dados esp acio-temporais e cientes. Isto levou ao desenvolvimento de uma grande variedade de m etodos e servi cos para implementa c~ao de sistemas de informa c~ao que trabalham com objetos que podem ser modelados como objetos moveis. No entanto, a investiga c~ao em bases de dados com objetos moveis de geometrias complexas focou-se essencialmente em modelos de dados esp acio-temporais e linguagens de interroga c~ao, existem ainda diversas quest~oes sobre a aquisi c~ao de dados esp acio-temporais. Esta tese prop~oe um conjunto de ferramentas para aquisi c~ao de dados esp acio-temporais em mudan ca cont nua a partir de fontes de dados discretos, tais como imagens de sat elite. Para gerar os dados utilizam-se t ecnicas de morphing de pol gonos, j a existentes. A t ecnica usada e apresentada em detalhe nesta tese. Para inser c~ao dos dados esp acio-temporais na base de dados usada foi criado um framework em JAVA que permite converter esses dados em dados compat veis com a base de dados esp acio-temporal. A framework desenvolvida tamb em permite a inser c~ao desses dados na base de dados. S~ao tamb em apresentadas uma serie de medidas para avaliar a qualidade dos dados gerados. Com a cria c~ao de data sets reais procura-se aumentar a qualidade das bases de dados esp acio-temporais existentes e futuras. Neste contexto e tamb em apresentado um m etodo para utiliza c~ao de t ecnicas de morphing para resolver opera c~oes esp acio-temporais na base de dados.
With the development of remote sensing technologies allowing capturing and transmitting geo-referenced data repeatedly along time, there are many applications demanding for e cient tools to deal with spatio-temporal data. This has led to development of a whole spectrum of methods and services for implementation of information systems dealing with objects that may be modelled as moving points. Although, database research on moving objects with complex shapes has mainly focused on spatio-temporal data models and query languages, there are still issues to be solved regarding for example the acquisition of spatio-temporal data. This thesis proposes a set of tools to acquisition of continuously changing spatio-temporal data from discrete sources, such as satellite images. To generate the continuous data from the discrete data source we resort to existing polygon morphing techniques, which are presented in detail in this thesis. To insert the generated data into the spatio-temporal database, a JAVA framework was created that can transform the generated data into spatio-temporal data compatible with the representations used in spatiotemporal databases. We also present a set of measures to evaluate the quality of the generated data. With the creation of real data sets we strive to improve the quality of the existing and future spatio-temporal databases. In that context we also present a method to use morphing techniques to solve spatio-temporal operations in the database.
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Whited, Brian Scott. "Tangent-ball techniques for shape processing". Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/31670.
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Thesis (Ph.D)--Computing, Georgia Institute of Technology, 2010.Committee Chair: Jarek Rossignac; Committee Member: Greg Slabaugh; Committee Member: Greg Turk; Committee Member: Karen Liu; Committee Member: Maryann Simmons. Part of the SMARTech Electronic Thesis and Dissertation Collection.
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Wong, Tzu Yen. "Image transition techniques using projective geometry". University of Western Australia. School of Computer Science and Software Engineering, 2009. http://theses.library.uwa.edu.au/adt-WU2009.0149.
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[Truncated abstract] Image transition effects are commonly used on television and human computer interfaces. The transition between images creates a perception of continuity which has aesthetic value in special effects and practical value in visualisation. The work in this thesis demonstrates that better image transition effects are obtained by incorporating properties of projective geometry into image transition algorithms. Current state-of-the-art techniques can be classified into two main categories namely shape interpolation and warp generation. Many shape interpolation algorithms aim to preserve rigidity but none preserve it with perspective effects. Most warp generation techniques focus on smoothness and lack the rigidity of perspective mapping. The affine transformation, a commonly used mapping between triangular patches, is rigid but not able to model perspective effects. Image transition techniques from the view interpolation community are effective in creating transitions with the correct perspective effect, however, those techniques usually require more feature points and algorithms of higher complexity. The motivation of this thesis is to enable different views of a planar surface to be interpolated with an appropriate perspective effect. The projective geometric relationship which produces the perspective effect can be specified by two quadrilaterals. This problem is equivalent to finding a perspectively appropriate interpolation for projective transformation matrices. I present two algorithms that enable smooth perspective transition between planar surfaces. The algorithms only require four point correspondences on two input images. ...The second algorithm generates transitions between shapes that lie on the same plane which exhibits a strong perspective effect. It recovers the perspective transformation which produces the perspective effect and constrains the transition so that the in-between shapes also lie on the same plane. For general image pairs with multiple quadrilateral patches, I present a novel algorithm that is transitionally symmetrical and exhibits good rigidity. The use of quadrilaterals, rather than triangles, allows an image to be represented by a small number of primitives. This algorithm uses a closed form force equilibrium scheme to correct the misalignment of the multiple transitional quadrilaterals. I also present an application for my quadrilateral interpolation algorithm in Seitz and Dyer's view morphing technique. This application automates and improves the calculation of the reprojection homography in the postwarping stage of their technique. Finally I unify different image transition research areas into a common framework, this enables analysis and comparison of the techniques and the quality of their results. I highlight that quantitative measures can greatly facilitate the comparisons among different techniques and present a quantitative measure based on epipolar geometry. This novel quantitative measure enables the quality of transitions between images of a scene from different viewpoints to be quantified by its estimated camera path.
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Wooller, René William. "Techniques for automated and interactive note sequence morphing of mainstream electronic music". Queensland University of Technology, 2007. http://eprints.qut.edu.au/20232/.
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Note sequence morphing is the combination of two note sequences to create a ‘hybrid transition’, or ‘morph’. The morph is a ‘hybrid’ in the sense that it exhibits properties of both sequences. The morph is also a ‘transition’, in that it can segue between them. An automated and interactive approach allows manipulation in realtime by users who may control the relative influence of source or target and the transition length. The techniques that were developed through this research were designed particularly for popular genres of predominantly instrumental electronic music which I will refer to collectively as Mainstream Electronic Music (MEM). The research has potential for application within contexts such as computer games, multimedia, live electronic music, interactive installations and accessible music or “music therapy”. Musical themes in computer games and multimedia can morph adaptively in response to parameters in realtime. Morphing can be used by electronic music producers as an alternative to mixing in live performance. Interactive installations and accessible music devices can utilise morphing algorithms to enable expressive control over the music through simple interface components.
I have developed a software application called LEMorpheus which consists of software infrastructure for morphing and three alternative note sequence morphing algorithms: parametric morphing, probabilistic morphing and evolutionary morphing. Parametric morphing involves converting the source and target into continuous envelopes, interpolation, and converting the interpolated envelopes back into note sequences. Probabilistic morphing involves converting the source and target into probability matrices and seeding them on recent output to generate the next note. Evolutionary morphing involves iteratively mutating the source into multiple possible candidates and selecting those which are judged as more similar to the target, until the target is reached.
I formally evaluated the probabilistic morphing algorithm by extracting qualitative feedback from participants in a live electronic music situation, benchmarked against a live, professional DJ. The probabilistic algorithm was competitive, being favoured particularly for long morphs. The evolutionary morphing algorithm was formally evaluated using an online questionnaire, benchmarked against a human composer/producer. For particular samples, the morphing algorithm was competitive and occasionally seen as innovative; however, the morphs created by the human composer typically received more positive feedback, due to coherent, large scale structural changes, as opposed to the forced continuity of the morphing software.
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Butt, Jeffrey Robert. "A Study of Morphing Wing Effectiveness in Fighter Aircraft using Exergy Analysis and Global Optimization Techniques". Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/36368.
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This thesis work presents detailed results of the application of energy- and exergy-based methods to the integrated synthesis/design of an Air-to-Air Fighter (AAF) aircraft with and without wing-morphing capability. In particular, a morphing-wing AAF is compared to a traditional fixed-wing AAF by applying large-scale optimization using exergy- and energy-based objective functions to the synthesis/design and operation of the AAF which consists of an Airframe Subsystem (AFS-A) and Propulsion Subsystem (PS). A number of key synthesis/design and operational decision variables are identified which govern the performance of the AFS-A and PS during flight, and detailed models of the components of each of the subsystems are developed. Rates of exergy destruction and exergy loss resulting from irreversible loss mechanisms are determined in each of the AAF vehicle subsystems and their respective components.
Multiple optimizations are performed on both types of AAF for a typical fighter aircraft mission consisting of 22 segments. Four different objective functions are used in order to compare exergy-based performance measures to the more traditional energy-based ones. The results show that the morphing-wing AAF syntheses/designs outperform those for the fixed-wing aircraft in terms of exergy destroyed/lost and fuel consumed. These results also show that the exergy-based objectives not only produce the "best" of the optimal syntheses/designs for both types of AAF in terms of exergy destroyed/lost and fuel consumed but as well provide details of where in each subsystem/component and how much specifically each source of irreversibility contributes to the optimal syntheses/designs found. This is not directly possible with an energy-based approach.
Finally, after completion of the synthesis/design optimizations, a parametric study is performed to explore the effect on morphing-wing effectiveness of changing the weight and energy penalties used to model the actuations required for morphing. The results show that the morphing-wing AAF exhibits significant benefits over the fixed-wing aircraft even for unrealistic weight and energy penalties.Master of Science
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Kolchuzhin, Vladimir. "Methods and Tools for Parametric Modeling and Simulation of Microsystems based on Finite Element Methods and Order Reduction Technologies". Doctoral thesis, Universitätsbibliothek Chemnitz, 2010. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-201000550.
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In der vorliegenden Arbeit wird die Entwicklung eines effizienten Verfahrens zur parametrischen Finite Elemente Simulation von Mikrosystemen und zum Export dieser Modelle in Elektronik- und Systemsimulationswerkzeuge vorgestellt. Parametrische FE-Modelle beschreiben den Einfluss von geometrischen Abmessungen, Schwankungen von Materialeigenschaften und veränderten Umgebungsbedingungen auf das Funktionsverhalten von Sensoren und Aktuatoren. Parametrische FE-Modelle werden für die Auswahl geeigneter Formelemente und deren Dimensionierung während des Entwurfsprozesses in der Mikrosystemtechnik benötigt. Weiterhin ermöglichen parametrische Modelle Sensitivitätsanalysen zur Bewertung des Einflusses von Toleranzen und Prozessschwankungen auf die Qualität von Fertigungsprozessen. In Gegensatz zu üblichen Sample- und Fitverfahren wird in dieser Arbeit eine Methode entwickelt, welche die Taylorkoeffizienten höherer Ordnung zur Beschreibung des Einflusses von Designparametern direkt aus der Finite-Elemente- Formulierung, durch Ableitungen der Systemmatrizen, ermittelt. Durch Ordnungsreduktionsverfahren werden die parametrischen FE-Modelle in verschiedene Beschreibungssprachen für einen nachfolgenden Elektronik- und Schaltungsentwurf überführt. Dadurch wird es möglich, neben dem Sensor- und Aktuatorentwurf auch das Zusammenwirken von Mikrosystemen mit elektronischen Schaltungen in einer einheitlichen Simulationsumgebung zu analysieren und zu optimierenThe thesis deals with advanced parametric modeling technologies based on differentiation of the finite element equations which account for parameter variations in a single FE run. The key idea of the new approach is to compute not only the governing system matrices of the FE problem but also high order partial derivatives with regard to design parameters by means of automatic differentiation. As result, Taylor vectors of the system’s response can be expanded in the vicinity of the initial position capturing dimensions and physical parameter. A novel approaches for the parametric MEMS simulation have been investigated for mechanical, electrostatic and fluidic domains in order to improve the computational efficiency. Objective of reduced order modeling is to construct a simplified model which approximates the original system with reasonable accuracy for system level design of MEMS. The modal superposition technique is most suitable for system with flexible mechanical components because the deformation state of any flexible system can be accurately described by a linear combination of its lowest eigenvectors. The developed simulation approach using parametric FE analyses to extract basis functions have been applied for parametric reduced order modeling. The successful implementation of a derivatives based technique for parameterization of macromodel by the example of microbeam and for exporting this macromodel into MATLAB/Similink to simulate dynamical behavior has been reported
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Mourougane, Christophe. "Notions de positivité et d'amplitude des fibrés vectoriels : théorèmes d'annulation sur les variétés kahlériennes". Université Joseph Fourier (Grenoble ; 1971-2015), 1997. http://www.theses.fr/1997GRE10028.
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L'objet de cette these est l'etude des proprietes de positivite algebriques, analytiques et co-homologiques des fibres vectoriels holomorphes sur les varietes kahleriennes compactes lisses. Dans la premiere partie, nous decrivons les proprietes de positivite algebriques et analytiques des fibres vectoriels obtenus comme images directes par des morphismes lisses de fibres en droites numeriquement effectifs adjoints par le fibre canonique relatif. Dans la deuxieme partie, nous etendons aux varietes kahleriennes compactes le theoreme, du a f. Bogomolov, d'annulation des espaces de p-formes holomorphes a valeurs dans un fibre en droites de dual numeriquement effectif. La troisieme partie, motivee par les travaux de m. Green et r. Lazarsfeld, est consacree aux theoremes d'annulation generique des groupes de cohomologie de fibres vectoriels semi-negatifs. Nous decrivons aussi la structure des lieux exceptionnels de cohomologie
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Chan, Kai-Chen y 詹凱振. "Using Morphing Technique to Predict an Infant Head Shape Growth". Thesis, 2006. http://ndltd.ncl.edu.tw/handle/09437960877250515355.
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碩士逢甲大學
自動控制工程所
94
Image morphing technique is applied to many aspects. It provides visual effects of dynamic change. Image morphing is a key technique for simulating the growth of organism contours by animation. This research uses the way of curve fitting to describe head contours’ files which established by earlier stage research, with parametric curve. And the parametric curve is the approximation curve of the head contour. Then we apply image morphing technique to move the position of the approximation curve’s control points to change the shape of the approximation curve, which also simulates the changing of the infant head shape’s growth. To design a windows platform can demonstrate dynamically and simulate the growth change of a newborn baby’s head circumference by using the principle of the morphing technology. First, we give the initial and the target head contour images then the windows platform presents dynamic intermediate images through the morphing process. Second, we give an infant’s initial head shape image, and the platform simulates the growth rate of the head shape according to head circumference growing curve. In the future, the studying establishes the structure of simulating infant head shape changing platform. The future work is to collect the coefficient correlation that the skull is influenced by external force. According to the coefficient, we can simulate and predict infant head shapes growth truer.
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Yang, Can-rui y 楊璨瑞. "Using Morphing technique to reconstruct 3D face model by 2D Image". Thesis, 2006. http://ndltd.ncl.edu.tw/handle/94931480653064810128.
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碩士國立中正大學
機械工程所
95
Technology capable of generating a realistic three-dimensional human face model using 2D images and a generic model has received a lot of attention. Because of the growth of 3D face application software, including for animation and artistic production, we have also developed a system that can reconstruct a 3D human face model easily. The system takes a pair of 2D face images and a generic 3D face model with corresponding feature points. The Morphing Algorithm is then used to reconstruct the 3D face. The system includes an editing tool that deforms the resulting 3D face model using the Free-Form Deformation (FFD) technique. Our proposed system is different from other research on 3D face modeling in that our imaging process converts a 2D personal image to a 3D point-based data that displays a 3D face with multi-density point clouds. The FFD editing tool with Bezier and B-Spline mathematic modelling are used to deform the resulting 3D face through global and local editing. In conclusion, our system not only reconstructs a 3D face model easily but also saves on hardware cost. The editing tool enables the results to have more variety and be more interesting.
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Lai, Chao-Hung y 賴昭宏. "A study of a multiscaled morphing interpolation technique for texture synthesis and image watermarking". Thesis, 2010. http://ndltd.ncl.edu.tw/handle/81412666721323388256.
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博士國立中興大學
資訊科學與工程學系所
98
The morphing interpolation techniques are commonly used tools in computer graphics and image processing. They have been applied to many applications, such as view morphing, texture design, and morph animation. In this dissertation, we apply the morphing interpolation techniques to temporal texture synthesis and image watermarking against local random geometric attacks. In the application of temporal texture synthesis, the proposed algorithm is further extended to render ocean surface. Temporal texture can be used to describe a wide variety of natural phenomena such as fire, smoke, and water. In this dissertation, we present a novel algorithm for temporal texture synthesis. This algorithm is simple and it requires only a static texture image as input to produce a plausible sequence with inexhaustible and quasi-periodic properties. We first introduce the basis sequence generation procedure. All the frames in the synthesized basis sequence are toroidal. Then the probability matrix and explicit links are employed to generate an inexhaustible sequence with quasi-periodic property. The quality of the synthesized temporal textures can be improved by the morphing interpolation techniques. In addition, the proposed method allows users to simply control the motion parameters and interactively render the composite landscape animations. The proposed morphing technique is also able to solve the problem of morphing between chaotic textures with obscure features. Several examples including scenes for cloud, fire, and water are presented to demonstrate that the proposed algorithm is simple, efficient, and controllable for synthesize temporal textures. Next, we extend the application for temporal texture synthesis and present another novel algorithm for synthesizing ocean surface with an illumination model. The proposed method requires two static images as input, one for reproducing the detailed ocean surface and the other for reconstructing the main structure waveform. The preprocessing stage synthesizes the toroidal textures and reconstructs the height fields for detailed water waves and the main structure waveform. The rendering stage uses the trivial texture mapping method to perform fast rendering, or uses a partial ray-marching method to achieve more realistic results without significantly increasing computational costs. The proposed method also simulates the specular effect to render more realistic ocean scenes, which is a great way to produce ocean landscape using only the photo textures. Experimental results demonstrate that the proposed method can easily and effectively produce plausible ocean scenes. Finally, we apply the multiscaled morphing technique to the application for image watermarking against the local geometric attack which is recently considered as the public enemy of most watermarking schemes. The watermark is embedded and retrieved using an amplitude modulation watermarking scheme. This work gives consideration to all the fidelity, robustness, and capacity. Moreover, the watermark bits act as implicit anchors to help correct local geometric distortions. In the proposed registration algorithm, an automatically multi-scaled neighborhood-matching approach is used to quickly and efficiently estimate local displacement, and a multi-resolution framework is superimposed to estimate both small and large local geometric distortions. Experimental results demonstrate the robustness and efficiency of the proposed algorithm.
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Lu, Ping-Hu y 呂秉和. "The study on the application of morphing technique to the text- to-image animation for Mandarin". Thesis, 1997. http://ndltd.ncl.edu.tw/handle/94314743161224740857.
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碩士中華工學院
電機工程學系
85
In this thesis, we propose a scheme on the application of morphing techniqueto the text-to-image animation for Mandarin. Acoustic and visual informationare the primary source when people communicate. The function of visual information is not useful itself, especially image of mouth, but also beneficialto the speech understanding. It is without doubt that people would feel veryuncomfortable when the speech is not synchronous with the mouth movement. Withthis crucial motivation, in this thesis, we research on a face animation systemwhich produces a sequence of mouth movements according to the speech, especiallyfor Mandarin. Based on the analysis of phonemes of Mandarin, we build up a viseme table.In stead of grouping similar phonemes, we build up the viseme table according tothe similarity of mouth shape for every phoneme. This is the basis for theanimation procedure. Then the digital morphing technique is utilized to modelthe mouth movement during speaking. The tempo of speaking while animating canbe controlled by the number of interpolated image frames in-between the imagesof associated phonemes. From the experiments, we have obtained promising resultsfor different speaking tempo and length.
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Macnicol, James Roy. "Scalable video coding by stream morphing". 2002. http://www.ozemail.com.au/~sigsegv/thesis_ss.pdf.
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Chiu, Ling-Chun y 邱靈均. "Application Morphing Techniques to Realistic Visualization of Car Sketch". Thesis, 2008. http://ndltd.ncl.edu.tw/handle/31814615131169737630.
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碩士國立臺灣科技大學
設計研究所
96
Following the evolution of digital technology, the concept design stage of automobiles witnessed a continuous introduction of digital design technologies, including not only 2D, 3D virtual modeling, and realistic rendering, but also and forward and reverse engineering of the physical models. In the past, it required highly skilled craftsman to create detailed, realistic rendering from hand drawn sketches. Even with CAD systems, it is still very time consuming for specialists to construct 3-D virtual models, create realistic renderings, or build scaled clay models from hand-drawn concept sketches. The experimental sample appealed basically in fast and simple production and conducted preliminary evaluation of advantages and disadvantages over the experimental item. To shorten the design schedule and reduce human variations, this research focuses on developing a method for the rapid, realistic visualization of car sketches. The method seeks to achieve visualizations much more realistic than hand-drawn sketches, yet to retain the original design intent during the process of transformation. This objective is achieved by morphing a photorealistic rendering into a set of characteristic lines defined on the concept sketch. The resulting visualizations are evaluated based on two criteria: perception of overall realism and presentation of various characteristics of the car design. For the perception of overall realism, the level of realism is higher for renderings obtained using the morphing method than hand-drawn images. For the presentation of various characteristics, there are more significant differences for head lamps than other characteristics of the car. To fully describe the shape of a car, hand-drawn sketches not only need to contain characteristic lines, but also shadings that describe convexities and concavities of the surfaces to be sufficient.
19
Chi, Yeh Chun y 葉俊棋. "Comparison of Morphing Techniques and Application of 3D Morphing in Multidimensional Perceptual Space －Using Sofas as Examples". Thesis, 2004. http://ndltd.ncl.edu.tw/handle/30193696651691261549.
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碩士國立臺灣科技大學
設計研究所
92
The focus of current product design has shifted from functional requirements to emotional appeals. Severe competitions on the market necessitate rapid development of new products that meet both functional and emotional requirements of the consumers. During this development process, designers play the pivotal role of shaping the product, and via the product shapes, communicating to the consumers. There is a need for computer-aided design tools for helping designers investigating a large number of potential designs at the concept development stage. The shapes of sofa are selected as the target product for this research. The sofa images from 2D morphing, hybrid 3D-2D morphing, and 3D morphing are compared. The 3D morphing technique is better at generating the complete and unambiguous shapes. But it’s difficult to collect the 3D model of sofas. 3D models must be built according to sofa images, subject to the condition that each of 3D morphing models has same number control vertices. It took excessive amount of time to build such 3D morphing models. In contrast, the efficiency of 2D morphing is much better. Multidimensional Scaling（MDS）was used to construct the perceptual map of the 3D morphing sofas. The new sofa shapes by 3D morphing interpolate between source sofas in the perceptual map. When the shape of sofa morphs gradually, the ‘’rational-emotional’’ affective attribute of the shape varies linearly. On the other hand, the ‘’traditional-modern’’ attribute varies non-linearly, with 50% mixture of two shapes exhibiting more complex and traditional images.
20
young, chang-chao y 張朝陽. "Application of 3D Morphing Techniques on the Facial Expressions of Computer Animated Characters". Thesis, 2008. http://ndltd.ncl.edu.tw/handle/63565549508694735235.
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碩士國立臺灣科技大學
設計研究所
96
Abstract When the general public watches movies, most of inducements of emotional reactions obtained are from actor performances. Backdrops and sound effects, on the other hand, carry far less emotional messages. However, whether characters in movies are actual persons or virtual roles, performance of facial expression is still the primary method to provide the most messages to audiences. Due to the fact that animation has been improved and was in mass production for decades, the requirements for virtual roles’ emotion expressions are more fine and delicate. When animation makers create facial animation, they need to gather a considerable amount of data related to facial expressions as reference, and this production process requires the consumption of large quantity of time cost. This research uses the morphing technique and theorizes that characters’ facial expressions contain the purest “elements,” which assumes that there are nine models of human fundamental facial expressions: sadness, grieve, anger, surprise, hatred, scorn, happy, laughing, and fear. After defining these nine fundamental facial expressions, we can use 3D Graphics Software Maya to compose 3D models, and use Virtools Software to create an operable simulation interface which comprises of two controllable areas: (1) control of display area, and (2) control of operation area. A user can use the simulation interface to adjust angles of models in the display area and to control variation of fundamental model models in the interpolated value by using the operating area. At least one single fundamental facial expression in the morphing degree can be accomplished through samplings of simulation interface, and up to nine parameters of fundamental facial expression can be operated. Also, models in the display area can immediately show results after morphing. We hope these methods and ideas can rapidly and precisely provide more reference data during animation process.