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Littérature scientifique sur le sujet « Video transformation »

Auteur : Grafiati

Publié le 30 mars 2023

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Articles de revues sur le sujet "Video transformation"

Wang, Ning, Wengang Zhou et Houqiang Li. « Contrastive Transformation for Self-supervised Correspondence Learning ». Proceedings of the AAAI Conference on Artificial Intelligence 35, n^o 11 (18 mai 2021) : 10174–82. http://dx.doi.org/10.1609/aaai.v35i11.17220.

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In this paper, we focus on the self-supervised learning of visual correspondence using unlabeled videos in the wild. Our method simultaneously considers intra- and inter-video representation associations for reliable correspondence estimation. The intra-video learning transforms the image contents across frames within a single video via the frame pair-wise affinity. To obtain the discriminative representation for instance-level separation, we go beyond the intra-video analysis and construct the inter-video affinity to facilitate the contrastive transformation across different videos. By forcing the transformation consistency between intra- and inter-video levels, the fine-grained correspondence associations are well preserved and the instance-level feature discrimination is effectively reinforced. Our simple framework outperforms the recent self-supervised correspondence methods on a range of visual tasks including video object tracking (VOT), video object segmentation (VOS), pose keypoint tracking, etc. It is worth mentioning that our method also surpasses the fully-supervised affinity representation (e.g., ResNet) and performs competitively against the recent fully-supervised algorithms designed for the specific tasks (e.g., VOT and VOS).

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Mohammed, Dhrgham Hani, et Laith Ali Abdul-Rahaim. « A Proposed of Multimedia Compression System Using Three - Dimensional Transformation ». Webology 18, SI05 (30 octobre 2021) : 816–31. http://dx.doi.org/10.14704/web/v18si05/web18264.

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Video compression has become especially important nowadays with the increase of data transmitted over transmission channels, the reducing the size of the videos must be done without affecting the quality of the video. This process is done by cutting the video thread into frames of specific lengths and converting them into a three-dimensional matrix. The proposed compression scheme uses the traditional red-green-blue color space representation and applies a three-dimensional discrete Fourier transform (3D-DFT) or three-dimensional discrete wavelet transform (3D-DWT) to the signal matrix after converted the video stream to three-dimensional matrices. The resulting coefficients from the transformation are encoded using the EZW encoder algorithm. Three main criteria by which the performance of the proposed video compression system will be tested; Compression ratio (CR), peak signal-to-noise ratio (PSNR) and processing time (PT). Experiments showed high compression efficiency for videos using the proposed technique with the required bit rate, the best bit rate for traditional video compression. 3D discrete wavelet conversion has a high frame rate with natural spatial resolution and scalability through visual and spatial resolution Beside the quality and other advantages when compared to current conventional systems in complexity, low power, high throughput, low latency and minimum the storage requirements. All proposed systems implement using MATLAB R2020b.

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Anggraini, Sazkia Noor. « Aesthetic Transformation of Video4Change Project Through Postmodernism Studies ». International Journal of Creative and Arts Studies 1, n^o 1 (17 avril 2017) : 44. http://dx.doi.org/10.24821/ijcas.v1i1.1571.

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Related research on community videos commonly limited in the social domain. This may happen because making video community is not classified as work of art, but rather as a tool to convey messages on community organizing method. Video4Change (v4c) project here consist different organizations in four countries; Indonesia, India, America and Israel. The review of videos conducted in textual and visual ethnography. This method used to specify all the things captured in the sense, the visual, the voice (audio) and the symbol on each video. Video as a medium in the postmodernism era considered as an illusion and simulation, now has more authority. Video build new structures and functions that transformed from mere aesthetic imagery into practical media with particular meanings. The video made by common people has been taking control of society to understanding the images by interpret it. This research attempts to trace and shift the study of community video from the perspective of art, vice versa from what have done before. However, the video as a tool has particular rules and approach to effectively deliver ‘text’ or message in visual language. This study expected to be a reference in a cultural context that comes from the artistic perspective. The analysis will shift the meaning of aesthetic perspective that could be transforming into practical solution-based. Beyond that, this study is able to see how the perspective transforms as the co modification of art in society changes.

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Salim, Fahim A., Fasih Haider, Saturnino Luz et Owen Conlan. « Automatic Transformation of a Video Using Multimodal Information for an Engaging Exploration Experience ». Applied Sciences 10, n^o 9 (27 avril 2020) : 3056. http://dx.doi.org/10.3390/app10093056.

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Exploring the content of a video is typically inefficient due to the linear streamed nature of its media and the lack of interactivity. While different approaches have been proposed for enhancing the exploration experience of video content, the general view of video content has remained basically the same, that is, a continuous stream of images. It is our contention that such a conservative view on video limits its potential value as a content source. This paper presents An Alternative Representation of Video via feature Extraction (RAAVE), a novel approach to transform videos from a linear stream of content into an adaptive interactive multimedia document and thereby enhance the exploration potential of video content by providing a more engaging user experience. We explore the idea of viewing video as a diverse multimedia content source, opening new opportunities and applications to explore and consume video content. A modular framework and algorithm for the representation engine and template collection is described. The representation engine based approach is evaluated through development of a prototype system grounded on the design of the proposed approach, allowing users to perform multiple content exploration tasks within a video. The evaluation demonstrated RAAVE’s ability to provide users with a more engaging, efficient and effective experience than a typical multimedia player while performing video exploration tasks.

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Zhang, Lei, Xiao-Quan Chen, Xin-Yi Kong et Hua Huang. « Geodesic Video Stabilization in Transformation Space ». IEEE Transactions on Image Processing 26, n^o 5 (mai 2017) : 2219–29. http://dx.doi.org/10.1109/tip.2017.2676354.

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Vinod, Malavika, M. Pallavi, Sreelakshmi Ajith et Padmamala Sriram. « Reversible Data Hiding in Encrypted Video Using Reversible Image Transformation ». Journal of Computational and Theoretical Nanoscience 17, n^o 1 (1 janvier 2020) : 136–40. http://dx.doi.org/10.1166/jctn.2020.8640.

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This work focuses on a method to hide images in videos in a manner that the secret image can be losslessly recovered from the target image with minimal distortion. This lossless recovery can be done by using Reversible Data Hiding (RDH). To ensure the privacy of the video owner, the target media is encrypted before applying RDH. Reversible Image Transformation (RIT) is a framework used to ensure that. Audio Steganography techniques are used for further encryption. This can be used in cloud technology so that the cloud may add information into the target video without compromising its integrity. RDH also has other possible applications in the field of military, defence and medicine.

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C, Chanjal. « Feature Re-Learning for Video Recommendation ». International Journal for Research in Applied Science and Engineering Technology 9, n^o VI (30 juin 2021) : 3143–49. http://dx.doi.org/10.22214/ijraset.2021.35350.

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Predicting the relevance between two given videos with respect to their visual content is a key component for content-based video recommendation and retrieval. The application is in video recommendation, video annotation, Category or near-duplicate video retrieval, video copy detection and so on. In order to estimate video relevance previous works utilize textual content of videos and lead to poor performance. The proposed method is feature re-learning for video relevance prediction. This work focus on the visual contents to predict the relevance between two videos. A given feature is projected into a new space by an affine transformation. Different from previous works this use a standard triplet ranking loss that optimize the projection process by a novel negative-enhanced triplet ranking loss. In order to generate more training data, propose a data augmentation strategy which works directly on video features. The multi-level augmentation strategy works for video features, which benefits the feature relearning. The proposed augmentation strategy can be flexibly used for frame-level or video-level features. The loss function that consider the absolute similarity of positive pairs and supervise the feature re-learning process and a new formula for video relevance computation.

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Shi, Henan, Tanfeng Sun, Xinghao Jiang, Yi Dong et Ke Xu. « A HEVC Video Steganalysis Against DCT/DST-Based Steganography ». International Journal of Digital Crime and Forensics 13, n^o 3 (mai 2021) : 19–33. http://dx.doi.org/10.4018/ijdcf.20210501.oa2.

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The development of video steganography has put forward a higher demand for video steganalysis. This paper presents a novel steganalysis against discrete cosine/sine transform (DCT/DST)-based steganography for high efficiency video coding (HEVC) videos. The new steganalysis employs special frames extraction (SFE) and accordion unfolding (AU) transformation to target the latest DCT/DST domain HEVC video steganography algorithms by merging temporal and spatial correlation. In this article, the distortion process of DCT/DST-based HEVC steganography is firstly analyzed. Then, based on the analysis, two kinds of distortion, the intra-frame distortion and the inter-frame distortion, are mainly caused by DCT/DST-based steganography. Finally, to effectively detect these distortions, an innovative method of HEVC steganalysis is proposed, which gives a combination feature of SFE and a temporal to spatial transformation, AU. The experiment results show that the proposed steganalysis performs better than other methods.

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Sowmyayani, S., et P. Arockia Jansi Rani. « An Efficient Temporal Redundancy Transformation for Wavelet Based Video Compression ». International Journal of Image and Graphics 16, n^o 03 (juillet 2016) : 1650015. http://dx.doi.org/10.1142/s0219467816500157.

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The objective of this work is to propose a novel idea of transforming temporal redundancies present in videos. Initially, the frames are divided into sub-blocks. Then, the temporally redundant blocks are grouped together thus generating new frames with spatially redundant temporal data. The transformed frames are given to compression in the wavelet domain. This new approach greatly reduces the computational time. The reason is that the existing video codecs use block matching methods for motion estimation which is a time consuming process. The proposed method avoids the use of block matching method. The existing H.264/AVC takes approximately one hour to compress a video file where as the proposed method takes only one minute for the same task. The experimental results substantially proved that the proposed method performs better than the existing H.264/AVC standard in terms of time, compression ratio and PSNR.

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Andriolo, Umberto. « Nearshore Wave Transformation Domains from Video Imagery ». Journal of Marine Science and Engineering 7, n^o 6 (17 juin 2019) : 186. http://dx.doi.org/10.3390/jmse7060186.

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Within the nearshore area, three wave transformation domains can be distinguished based on the wave properties: shoaling, surf, and swash zones. The identification of these distinct areas is relevant for understanding nearshore wave propagation properties and physical processes, as these zones can be related, for instance, to different types of sediment transport. This work presents a technique to automatically retrieve the nearshore wave transformation domains from images taken by coastal video monitoring stations. The technique exploits the pixel intensity variation of image acquisitions, and relates the pixel properties to the distinct wave characteristics. This allows the automated description of spatial and temporal extent of shoaling, surf, and swash zones. The methodology was proven to be robust, and capable of spotting the three distinct zones within the nearshore, both cross-shore and along-shore dimensions. The method can support a wide range of coastal studies, such as nearshore hydrodynamics and sediment transport. It can also allow a faster and improved application of existing video-based techniques for wave breaking height and depth-inversion, among others.

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Thèses sur le sujet "Video transformation"

Baba, Gar Yusuf. « The Metamorphosis of Performance : Oral Heritage and Medial Transformation in Kanywood Video Films ». Doctoral thesis, Humboldt-Universität zu Berlin, 2020. http://dx.doi.org/10.18452/21532.

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Die Studie definiert und analysiert Kanywood-Videofilme kritisch, wobei ein besonderer Schwerpunkt auf Quellen der mündlichen Literatur und Performancepraxis liegt. Per Definition steht Kanywood sowohl für Filmindustrie als auch für in Nordnigeria produzierten Videofilme. Die Studie hält an "Kanywood" als dem für die Branche geprägten Label fest. Der Literaturüberblick zeigt, dass die Aneignung von Bollywood-Filmmustern durch Kanywood-Filmemacher übermäßig untersucht wurde. Bisherige Untersuchungen im Bereich des re-enactment oraler Hausa-Performance in Kanywood-Videofilmen sind hingegen unzureichend. Die vorliegende Studie füllt mit ihrer Untersuchung der Transformation der Hausa-Kultur im Medium Film aufgrund der Globalisierung und im Kontext traditioneller Performance-Künste diese Lücke, und fügt so den bestehenden Arbeiten über Kanywood eine innovative Forschungsperspektive hinzu. Im theoretischen Rahmen von Performance Studies und mit der gründlichen Analyse eines ausgewählten Korpus zeigt die Studie, wie der Videofilm als Medium wichtiger sozialer und kultureller Veränderungen gesehen wird. Er ist nicht nur ein Gegenstand anhand dessen die Erforschung des Konzepts einer transzendierenden Globalisierung möglich ist, sondern auch ein Weg, um zu verstehen, wie die Gesellschaft sich unter bestimmten sich wandelnden Umständen verändert. Während die allgemein zugrunde liegende Frage lautet, ob Kultur statisch ist oder nicht, verhandelt die Studie dabei die spezifischen Fragen, inwiefern Performances während des Filmemachens neu inszeniert und neu gerahmt werden, und inwieweit traditionell kodierte Performance-Ereignisse im Videofilm verändert, subvertiert und/oder bereichert werden. Die Studie empfiehlt die Ästhetik von Filmsprache als ein Gebiet weiterführender Forschung, stellt heraus, dass Imitation, Adaptation und Aneignung zirkulierender künstlerischer Formen ein globale Phänomene sind, die auf Intertextualität beruhen, erklärt, dass Kultur nicht statisch, sondern dynamisch ist, und kommt zu dem Schluss, dass es angemessener ist, Videofilme und Filmemacher durch das Paradigma der kulturellen Hybridität und Modernisierung zu betrachten, da sie die kulturelle Verschiebung, Transformation und Veränderung im Zeitalter der Globalisierung fördern.
The study identifies and critically analyses Kanywood video films with particular emphasis on sources in oral literature and performance practices. By way of definition, Kanywood stands for both the film industry and video films produced in northern Nigeria. The study sticks to “Kanywood” as the label coined for the industry. However, “Kannywood” with the consonant cluster, as in Hollywood, Bollywood and Nollywood is a variant label, which some scholars have adopted. The study forgrounds that Kanywood filmmakers' appropriation of Bollywood have been excessively explored. But investigations in the area of re-enactment of performance in Kanywood video films are conceivably insufficiently undertaken. Therefore, the distinct contribution of this study reflects on transformation of Hausa culture due to globalization, thus elaborating the existing works on Kanywood. Through a performance framework and a thorough analysis of selected corpus, the study shows how video film is seen as a provider of major social and cultural changes. It is not only a means through which an exploration of the concept of the transcending globalization is possible, but it is also a way of comprehending how the society transforms under some changing circumstances. While the general underlying question is whether or not culture is static, the study thereby negotiates specific questions such as how are performances re-enacted and re-framed during filmmaking process, and how far are traditionally encoded performance events altered, changed, subverted or enriched in video film? The study recommends the aesthetics of language as an area of further research, foregrounds that imitation, adaptation and appropriation of circulating artistic forms is a global phenomenon grounded in intertextuality, expounds that culture is not fixed but dynamic, and concludes that it is more appropriate to look at the video films and the filmmakers through the paradigm of cultural hybridity and modernization which enhance cultural shift, transformation and change in this era of globalization. Keywords: Kanywood, performance, oral heritage, transformation The study identifies and critically analyses Kanywood video films with particular emphasis on sources in oral literature and performance practices. By way of definition, Kanywood stands for both the film industry and video films produced in northern Nigeria. The study sticks to “Kanywood” as the label coined for the industry. However, “Kannywood” with the consonant cluster, as in Hollywood, Bollywood and Nollywood is a variant label, which some scholars have adopted. The study forgrounds that Kanywood filmmakers' appropriation of Bollywood have been excessively explored. But investigations in the area of re-enactment of performance in Kanywood video films are conceivably insufficiently undertaken. Therefore, the distinct contribution of this study reflects on transformation of Hausa culture due to globalization, thus elaborating the existing works on Kanywood. Through a performance framework and a thorough analysis of selected corpus, the study shows how video film is seen as a provider of major social and cultural changes. It is not only a means through which an exploration of the concept of the transcending globalization is possible, but it is also a way of comprehending how the society transforms under some changing circumstances. While the general underlying question is whether or not culture is static, the study thereby negotiates specific questions such as how are performances re-enacted and re-framed during filmmaking process, and how far are traditionally encoded performance events altered, changed, subverted or enriched in video film? The study recommends the aesthetics of language as an area of further research, foregrounds that imitation, adaptation and appropriation of circulating artistic forms is a global phenomenon grounded in intertextuality, expounds that culture is not fixed but dynamic, and concludes that it is more appropriate to look at the video films and the filmmakers through the paradigm of cultural hybridity and modernization which enhance cultural shift, transformation and change in this era of globalization. Keywords: Kanywood, performance, oral heritage, transformation The study identifies and critically analyses Kanywood Video films with particular emphasis on sources in oral literature and performance practices. By way of definition, Kanywood stands for both the film industry and video films produced in northern Nigeria. The study sticks to "Kanywood" as the label coined for the industry. However, "Kannywood" with the consonant cluster, as in Hollywood, Bollywood and Nollywood is a variant label, which some scholars have adopted. The study foregrounds that Kanywood filmmakers' appropriation of Bollywood have been excessively explored. But investigations in the area of re-enactment of performance in Kanywood video films are conceivably insufficiently undertaken. Therefore, the distinct contribution of this reflects on transformation of Hausa culture due to globalization, thus elaborating the existing works on Kanywood. Through a performance framework and a thorough analysis of selected corpus, the study shows how video film is seen as a provider of major social and cultural changes. It is not only a means through which an exploration of the concept of the transcending globalization is possible, but it is also a way of comprehending how the society transforms under some changing circumstances. While the general underlying question is whether or not culture is static, the study thereby negotiates specific questions such as how are performances re-enacted and re-framed during filmmaking process, and how far are traditionally encoded performance events altered, changed, subverted or enriched in video film? The study recommends the aesthetics of language as an area of further research, foregrounds that imitation, adaptation and appropriation of circulating artistic forms is a global phenomenon grounded in intertextuality, expounds that culture is not fixed but dynamic, and concludes that it is more appropriate to look at the video films and the filmmakers through the paradigm of cultural hybridity and modernization which enhance cultural shift, transformation and change in this era of globalization.

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Halbach, Till. « Error-robust coding and transformation of compressed hybered hybrid video streams for packet-switched wireless networks ». Doctoral thesis, Norwegian University of Science and Technology, Faculty of Information Technology, Mathematics and Electrical Engineering, 2004. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-136.

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This dissertation considers packet-switched wireless networks for transmission of variable-rate layered hybrid video streams. Target applications are video streaming and broadcasting services. The work can be divided into two main parts.

In the first part, a novel quality-scalable scheme based on coefficient refinement and encoder quality constraints is developed as a possible extension to the video coding standard H.264. After a technical introduction to the coding tools of H.264 with the main focus on error resilience features, various quality scalability schemes in previous research are reviewed. Based on this discussion, an encoder decoder framework is designed for an arbitrary number of quality layers, hereby also enabling region-of-interest coding. After that, the performance of the new system is exhaustively tested, showing that the bit rate increase typically encountered with scalable hybrid coding schemes is, for certain coding parameters, only small to moderate. The double- and triple-layer constellations of the framework are shown to perform superior to other systems.

The second part considers layered code streams as generated by the scheme of the first part. Various error propagation issues in hybrid streams are discussed, which leads to the definition of a decoder quality constraint and a segmentation of the code stream to transmit. A packetization scheme based on successive source rate consumption is drafted, followed by the formulation of the channel code rate optimization problem for an optimum assignment of available codes to the channel packets. Proper MSE-based error metrics are derived, incorporating the properties of the source signal, a terminate-on-error decoding strategy, error concealment, inter-packet dependencies, and the channel conditions. The Viterbi algorithm is presented as a low-complexity solution to the optimization problem, showing a great adaptivity of the joint source channel coding scheme to the channel conditions. An almost constant image qualiity is achieved, also in mismatch situations, while the overall channel code rate decreases only as little as necessary as the channel quality deteriorates. It is further shown that the variance of code distributions is only small, and that the codes are assigned irregularly to all channel packets.

A double-layer constellation of the framework clearly outperforms other schemes with a substantial margin.

Keywords — Digital lossy video compression, visual communication, variable bit rate (VBR), SNR scalability, layered image processing, quality layer, hybrid code stream, predictive coding, progressive bit stream, joint source channel coding, fidelity constraint, channel error robustness, resilience, concealment, packet-switched, mobile and wireless ATM, noisy transmission, packet loss, binary symmetric channel, streaming, broadcasting, satellite and radio links, H.264, MPEG-4 AVC, Viterbi, trellis, unequal error protection

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Mai, Thi Xuan Huong <1988&gt. « Digital transformation – The movements of marketing and consumer behaviors towards digital platforms – Video streaming use case ». Master's Degree Thesis, Università Ca' Foscari Venezia, 2022. http://hdl.handle.net/10579/21689.

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This thesis aims to picture the movements of marketing and consumer behaviors in the era of digitalization, video streaming is an example of the transformation by taking imcreasingly a vital role in digital marketing strategy. Through this thesis, we can understand the transformation from traditional to digital platforms in marketing practice. This thesis also indicates the comparison between gen Z versus other Generations in term of online behavior during and post Covid-19 epidemic and therefore open the discussion about the threats and opportunities for brands to maintain and develop. Based on theory of marketing in general and digital marketing in specific, this thesis also skims through some public research which is related to marketing definition & history, milestones of digital marketing as well as current situation of digital marketing. Another part of the theory that the Digital reports are based on consumer behavior indicated to online activities which puts a strong foundation to explain how consumers shift to use online for searching information as well as making decision to choose brands for their needs. The concepts, marketing channels are introduced to form fundamental knowledge. Sources of theoretical knowledge are from books, public research, thesis, mainly from internet, study program and library. The main research part uses quantitative research and desk research to form up an integrated information to demonstrate and explain the practice. Quantitative survey helps to understand consumers’ behavior regarding online activities and desk research is to confirm the findings from quantitative survey on a boarder scale. More specific, the research is based on three pointed markets: Italy, Iran and Vietnam which will support to understand in specific markets as well as to give an idea to picture how the life of people under Covid-19 and how they change their behavior in shopping to online platforms. Outcome insights will help to contribute consumer insight to recommend in understanding the circumstance of the market under the impacts of Covid-19 for all businesses. Furthermore, the reasons why customers tend to use which platform by which format will help the businesses to build up a marketing plan properly. The other objective is to figure out the triggers and the barriers of using any format of information will bring brands to the new era of providing what customers’ needs. Finally, the insights from the research also help marketers to admit that digital marketing is indispensable aspect to keep in touch with target customers as well as improving brand health by reach more and right customers. Another part of the survey will object to Live streaming which is taking an important role in term of connecting customers and selling products. Live Streaming which is a part of video streaming is a potential channel that businesses could focus on in the future.

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Lindmäe, Maria. « Reimagining the city : hip hop and the social transformation of Comuna 13, Medellín ». Doctoral thesis, Universitat Pompeu Fabra, 2020. http://hdl.handle.net/10803/668921.

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This dissertation studies the role of music making in the social construction of the city within the paradigm of the experience economy. Music making as collective organization of sound that requires decisions of what is being emitted and what not, of what creates harmony and what produces dissonance, is also the organization of the imaginary and real spaces where it is created. Looking at hip hop as a social process that is constitutive of and constituted by in-between differential spaces, the thesis puts into value vernacular practices of creativity, analysing their role in the social reconstruction of Comuna 13 in Medellín, Colombia. Focusing on the cultural heritage of Comuna 13 that has been created by young artists as a means of resistance to (state) violence, the dissertation argues that urban social formations, such as hip hop groups, have an important role in empowering youth and in creating counter-dominant place narratives to the elitist city imagery.
La presente tesis estudia el papel de la práctica musical en la construcción social de la ciudad desde el paradigma de la economía de la experiencia. La práctica musical, entendida como la organización colectiva sonido que requiere tomar decisiones sobre lo que se emite o lo que no, y sobre lo que crea armonía o lo que produce disonancia, también organiza el espacio imaginario y real donde esa música se crea. Destacando al hip hop como un proceso social que constituye y a su vez está constituido por espacios intermedios diferenciales, la tesis pone en valor las prácticas de creatividad vernácula, analizando su función en la reconstrucción social de la Comuna 13 de Medellín, Colombia. La investigación, centrada en el patrimonio cultural creado por jóvenes artistas como un medio de resistencia a la violencia (estatal), sostiene que las formaciones urbano-sociales, como los grupos de hip-hop, tienen una repercusión importante en el empoderamiento de la juventud y en la creación de narrativas de lugar alternativas al imaginario elitista de la ciudad.

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Čermák, Marek. « Detekce optického disku v sériích snímků z video oftalmoskopu ». Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2017. http://www.nusl.cz/ntk/nusl-316826.

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This work is focused on automatic detection of optic disc in retinal images. There is briefly described anatomy of human eye, principles of retinal imaging and also overview of the methods used for optic disc detection. The practical part describes developed procedures for optic disc detection, ie detection based on watershed transform, active contours and also on region growing technique. The main method of this work is the method of circular transformation, which as the only one allowed to detect the optic disc on the images of video ophtalmoscope and also on the high quality images from fundus cameras. This method was tested on three datasets. The average overlap 92,44 % was achieved for HRF dataset, 91,03 for DRIONS dataset and 77,36 for images of video ophtalmoscope.

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Grimm, Martial. « Proposition d'une nouvelle méthode de transformation de signaux video rvb/hsi : application aux systèmes de vision couleur temps réel ». Nancy 1, 1994. http://docnum.univ-lorraine.fr/public/SCD_T_1994_0322_GRIMM.pdf.

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L'espace colorimétrique HSI, offre une multitude d'avantages en analyse et traitement d'images couleurs (attributs h et s) insensibles aux variations d'éclairement de la scène, représentation des couleurs analogue à celle de l'il, segmentation chromatique robuste et bien adaptée aux images réelles. Cependant les cameras et autres capteurs d'images délivrent des signaux standards RVB et la transformation RVB HSI à la cadence vidéo est encore mal maitrisée (transfert d'espace incomplet, pertes de signification des attributs h et s en certaines zones, aberrations dues à la discrétisation des signaux amont). Pour tenter de résoudre certains de ces problèmes, nous avons choisi une méthode de transformation non conventionnelle qui aboutit à l'élaboration d'une architecture analogique-numérique. Toutes les fonctions hormis les relations trigonométriques sont réalisées en analogique. La numérisation n'apparait qu'en fin de traitement. Les améliorations obtenues par rapport aux méthodes entièrement numériques sont d'une part, une augmentation de la zone chromatique de l'espace HSI ; d'autre part, la transition chromatique/achromatique présente une meilleure continuité ce qui permet des différenciations de couleur acceptables même à faible niveau. Enfin, un format de 3x8 bits offre un nombre de couleur discernable analogue à celui du cube RVB.

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Kabusheva, Sabina. « Transformation of Telco business strategy driven by over-the-top services such as WhatsApp, Skype and Netflix : The case of the Czech Republic ». Master's thesis, Vysoká škola ekonomická v Praze, 2015. http://www.nusl.cz/ntk/nusl-206054.

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The following thesis aims to describe the transformation of telco operators' business strategy evoked by the growing popularity and usage of Internet services like WhatsApp, Skype and Netflix, also known as over-the-top services. The thesis provides comprehensive overview of transformations in the telecom industry that have been taking place globally, explaining the drivers that led to inception of free or cheaper Internet-based services, their business models. It then narrows down to the thorough analysis of the Czech market, capturing the implications that over-the-top services have on business strategy of the major Czech telco players. The analysis is strongly supported by industry reports, statistics and quantitative research. The primary research adds in telco customers' perspectives, usage and value perception of over-the-top services, as well as their satisfaction with respective telco services and their pricing. Derived findings identify major developments and trends in the Czech telco market; they also suggest compelling observations for related businesses.

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Mehta, Smith. « The 'new screen ecology' in India : A study in digital transformation of media ». Thesis, Queensland University of Technology, 2021. https://eprints.qut.edu.au/208077/1/Smith_Mehta_Thesis.pdf.

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The thesis provides an in-depth study on the emergence of the Indian online audio-visual landscape by showing how the launch of a local and global suite of social media platforms like Youtube, Facebook, and portals like Hotstar, TVFPlay, Netflix shape the working conditions of above-the-line labor. Drawing on in-depth interviews with three categories of professionals: creators, platform and portal executives, and intermediaries (talent agents, multi-channel networks), this research demonstrates how the Indian screen industries are affected by social relations between these professionals and how their industrial practices blur the content and creator-based distinctions between platforms and portals.

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PALLONE, Grégory. « DILATATION ET TRANSPOSITION SOUS CONTRAINTES PERCEPTIVES DES SIGNAUX AUDIO : APPLICATION AU TRANSFERT CINEMA-VIDEO ». Phd thesis, Université de la Méditerranée - Aix-Marseille II, 2003. http://tel.archives-ouvertes.fr/tel-00003363.

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La coexistence de deux formats : cinéma à 24 images/s et vidéo à
25 images/s, implique l'accélération ou le ralentissement de la
bande-son lors du transfert d'un format vers l'autre. Ceci
provoque une modification temporelle du signal sonore, et par
conséquent une modification spectrale avec altération du timbre.
Les studios de post-production audiovisuelle souhaitent compenser
cet effet par l'application d'une transformation sonore adéquate.

L'objectif de ce travail est de fournir à l'industrie
audiovisuelle un système permettant de pallier la modification de
timbre engendrée par le changement de vitesse de lecture. Ce
système se compose d'une part d'un algorithme de traitement et
d'autre part d'une machine sur lequel il est implanté.
L'algorithme est conçu et développé pour répondre aux contraintes
liées à la qualité sonore et à la compatibilité multicanal. La
machine, baptisée HARMO, est conçue spécifiquement par la société
GENESIS sur la base de processeurs de signaux numériques, et doit
répondre à la contrainte de temps-réel. Cet aspect "valorisation"
conduit à intégrer dans le projet les contraintes de coût et de
délai de réalisation.

Un état de l'art basé sur une bibliographie quasi-exhaustive
aboutit à une classification originale des méthodes de dilatation
et de transposition existantes. Ceci nous amène à distinguer et à
étudier les méthodes classiques temporelles et fréquentielles, et
à introduire les méthodes temps-fréquence. Cette classification
est à la base de plusieurs méthodes innovantes :

1. deux méthodes temps-fréquence dont l'analyse est adaptée à l'audition,

2. deux méthodes couplées qui associent les avantages des méthodes temporelles et fréquentielles,

3. une méthode temporelle basée sur une amélioration des méthodes existantes.

Les algorithmes sont évalués grâce à une banque de sons-test
spécifiquement élaborée pour mettre en évidence les défauts
caractéristiques des algorithmes. Notre choix final s'est porté
sur l'approche temporelle, que nous optimisons par l'adjonction de
critères de segmentation basés sur l'autocorrélation normalisée et
la détection de transitoires. Cet algorithme s'intègre dans un
logiciel qui a été structuré pour un fonctionnement temps-réel et
multicanal sur le système HARMO.

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Hyatt, Jonathan Charles. « The Criterion of Quality : A Paratextual Analysis of the Criterion Collection in the Age of Digital Distribution ». Chapman University Digital Commons, 2014. https://digitalcommons.chapman.edu/film_studies_theses/1.

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In 2011, home-video distribution company, The Criterion Collection, teamed up with streaming-content provider Hulu, extending their business model to include online streaming to subscribers through Hulu Plus. With the rise of Over-The-Top (OTT) media distribution services into the at-home market, the question that Criterion now faces is: how will the company survive as the market shifts away from Criterion’s established values? And, more pertinently, how does Criterion, by rebranding their image to compete in the streaming market, hope to attract new users without alienating their established fan base or sacrificing their brand identity? This thesis examines the Criterion Collection’s brand identity, business model, and history, focusing on its packaging and promotion, distribution channels (physical and streaming), and the formation of a self-established cinephile community through their website, Criterion.com. In my examination of Criterion’s attempts to branch out into new markets and adapt to alternative modes of media consumption, I argue that Criterion is taking strides to attract new audiences and build a tightly knit online fan community around their brand.

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Livres sur le sujet "Video transformation"

Hollywood catwalk : Exploring costume and transformation in American film. London : I.B. Tauris, 2010.

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La transformation filmique : Du Contesto à Cadaveri eccellenti. Berne : P. Lang, 1990.

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Milne, Mike. Transformation of television sport : New methods, new rules. Houndmills, Basingstoke, Hampshire : Palgrave Macmillan, 2016.

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Distributing silent film serials : Local practices, changing forms, cultural transformation. New York : Routledge, 2011.

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Lois, Bianchi, et Independent Curators Incorporated, dir. Video transformations. New York : Independent Curators Inc., 1985.

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Christina, Spiesel, dir. Law on display : The digital transformation of legal persuasion and judgment. New York : New York University Press, 2009.

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Jairazbhoy, Nazir Ali. The Bake restudy in India, 1938-1984 : The preservation and transformation of performance in Tamilnadu, Kerala, and Karnataka : an ethnographic video monograph. Van Nuys, Calif. (13659 Victory Blvd., Suite 577, Van Nuys 91491) : Apsara Media for Intercultural Education, 1991.

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Gomula, Jessica. Jessica Gomula : Infinite transformations of desire. Turlock, CA : California State University, Stanislaus, 2008.

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East Asian cinemas : Regional flows and global transformations. Houndmills, Basingstoke, Hampshire : Palgrave Macmillan, 2011.

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Eric, Rentschler, dir. German film & literature : Adaptations and transformations. New York : Methuen, 1986.

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Chapitres de livres sur le sujet "Video transformation"

Müller, Karsten, Heiko Schwarz, Peter Eisert et Thomas Wiegand. « Video Data Processing ». Dans Digital Transformation, 43–62. Berlin, Heidelberg : Springer Berlin Heidelberg, 2019. http://dx.doi.org/10.1007/978-3-662-58134-6_4.

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Chakrabarti, Indrajit, Kota Naga Srinivasarao Batta et Sumit Kumar Chatterjee. « Fast One-Bit Transformation Architectures ». Dans Motion Estimation for Video Coding, 45–64. Cham : Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-14376-7_5.

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Busulwa, Richard, et Nina Evans. « Video analytics, computer vision, and virtual reality technologies ». Dans Digital Transformation in Accounting, 221–31. Abingdon, Oxon ; New York, NY : Routledge, 2021. | Series : Business & digital transformation : Routledge, 2021. http://dx.doi.org/10.4324/9780429344589-21.

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Ezhilarasan, M., et P. Thambidurai. « A Hybrid Transformation Technique for Video Coding ». Dans Distributed Computing and Networking, 503–8. Berlin, Heidelberg : Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/11947950_55.

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Busulwa, Richard. « Video Content Analytics, Computer Vision, and Machine Vision Primer ». Dans Navigating Digital Transformation in Management, 369–80. London : Routledge, 2022. http://dx.doi.org/10.4324/9781003254614-27.

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Marmaras, Ilias. « Banoptikon Video Game : Walk-through a Dystopia ». Dans The Digital Transformation of the Public Sphere, 403–21. London : Palgrave Macmillan UK, 2016. http://dx.doi.org/10.1057/978-1-137-50456-2_20.

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Jana, Sunanda, Arnab Kumar Maji et Rajat Kumar Pal. « A Robust Video Steganographic Scheme Using Sudoku Puzzle for Secured Data Hiding ». Dans Social Transformation – Digital Way, 533–45. Singapore : Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-1343-1_45.

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Ngo, Phuc, Akihiro Sugimoto, Yukiko Kenmochi, Nicolas Passat et Hugues Talbot. « Discrete Rigid Transformation Graph Search for 2D Image Registration ». Dans Image and Video Technology – PSIVT 2013 Workshops, 228–39. Berlin, Heidelberg : Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-53926-8_21.

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Murschetz, Paul Clemens, et Mike Friedrichsen. « Does Online Video Save Printed Newspapers ? Online Video as Convergence Strategy in Regional Printed News Publishing : The Case of Germany ». Dans Digital Transformation in Journalism and News Media, 115–28. Cham : Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-27786-8_10.

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Liu, Cong, Xiang Li et Minghu Wu. « Video Stabilization Algorithm Based on Kalman Filter and Homography Transformation ». Dans Advances in Internetworking, Data & ; Web Technologies, 308–13. Cham : Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-59463-7_31.

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Actes de conférences sur le sujet "Video transformation"

Yu, Hong H., et Wayne H. Wolf. « Multiresolution video segmentation using wavelet transformation ». Dans Photonics West '98 Electronic Imaging, sous la direction de Ishwar K. Sethi et Ramesh C. Jain. SPIE, 1997. http://dx.doi.org/10.1117/12.298441.

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Schouten, Theo E., et Egon L. van den Broek. « Inverse perspective transformation for video surveillance ». Dans Electronic Imaging 2008, sous la direction de Charles A. Bouman, Eric L. Miller et Ilya Pollak. SPIE, 2008. http://dx.doi.org/10.1117/12.767236.

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Vermeirsch, Kenneth, Stijn Notebaert, Jan De Cock, Peter Lambert et Rik Van de Walle. « Transformation techniques for future video coding ». Dans 5th International Mobile Multimedia Communications Conference. ICST, 2009. http://dx.doi.org/10.4108/icst.mobimedia2009.7990.

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Jung, Frank. « Digital HDTV image manipulation : architecture of a transformation frame store ». Dans Video Communications and Fiber Optic Networks, sous la direction de Naohisa Ohta. SPIE, 1993. http://dx.doi.org/10.1117/12.161475.

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Pang, Yik Siang, et Yiqi Tew. « A Survey on Multi-View and 3D High Efficiency Video Coding on Real Time Streaming ». Dans International Conference on Digital Transformation and Applications (ICDXA 2020). Tunku Abdul Rahman University College, 2020. http://dx.doi.org/10.56453/icdxa.2020.1013.

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In the past few years, the demand of multi-view was increased rapidly and there was a lot of research works to improve the technique and fulfil its needs. High Efficiency Video Coding (HEVC) compression standard has been implemented in this work. HEVC is a compression standard designed to reduce bitrate and remain the same quality compared to the previous compression standard Advanced Video Coding (H.264). It will provide a better compression to higher resolution video such as Ultra High Definition (UHD). In this paper presents a preliminary study on Multi-view with depth by using HEVC compression on a real-time streaming protocol. The study of proposed work may help the industry to enhance the viewing experience by multiple camera capture and also resolve the data traffic issue to transmit UHD video. Keywords: High Efficiency Video Coding, 3DHEVC, Multi-view, real-time streaming, Ultra High Definition

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Wu, Zhipeng, Shuqiang Jiang et Qingming Huang. « Near-duplicate video matching with transformation recognition ». Dans the seventeen ACM international conference. New York, New York, USA : ACM Press, 2009. http://dx.doi.org/10.1145/1631272.1631353.

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Rao, Navaneeth S., S. H. Shruthi, D. Achutha, M. K. Dileep, R. Sandeep et D. L. Girijamba. « Perceptual Video Hashing Using 3D Hadamard Transformation ». Dans 2017 International Conference on Current Trends in Computer, Electrical, Electronics and Communication (CTCEEC). IEEE, 2017. http://dx.doi.org/10.1109/ctceec.2017.8455022.

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Chen, Xiongtao, Wenmin Wang, Jinzhuo Wang et Weimian Li. « Learning Object-Centric Transformation for Video Prediction ». Dans MM '17 : ACM Multimedia Conference. New York, NY, USA : ACM, 2017. http://dx.doi.org/10.1145/3123266.3123349.

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Rong-Chi Chang et Cheng-Chung Chang. « Adaptive color image style transformation for video ». Dans IET International Conference on Frontier Computing. Theory, Technologies and Applications. IET, 2010. http://dx.doi.org/10.1049/cp.2010.0539.

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Yu, Hong H. « Compressed-domain video segmentation using wavelet transformation ». Dans SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, sous la direction de Andrew G. Tescher. SPIE, 1999. http://dx.doi.org/10.1117/12.365830.

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Rapports d'organisations sur le sujet "Video transformation"

Pikilnyak, Andrey V., Nadia M. Stetsenko, Volodymyr P. Stetsenko, Tetiana V. Bondarenko et Halyna V. Tkachuk. Comparative analysis of online dictionaries in the context of the digital transformation of education. [б. в.], juin 2021. http://dx.doi.org/10.31812/123456789/4431.

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The article is devoted to a comparative analysis of popular online dictionaries and an overview of the main tools of these resources to study a language. The use of dictionaries in learning a foreign language is an important step to understanding the language. The effectiveness of this process increases with the use of online dictionaries, which have a lot of tools for improving the educational process. Based on the Alexa Internet resource it was found the most popular online dictionaries: Cambridge Dictionary, Wordreference, Merriam–Webster, Wiktionary, TheFreeDictionary, Dictionary.com, Glosbe, Collins Dictionary, Longman Dictionary, Oxford Dictionary. As a result of the deep analysis of these online dictionaries, we found out they have the next standard functions like the word explanations, transcription, audio pronounce, semantic connections, and examples of use. In propose dictionaries, we also found out the additional tools of learning foreign languages (mostly English) that can be effective. In general, we described sixteen functions of the online platforms for learning that can be useful in learning a foreign language. We have compiled a comparison table based on the next functions: machine translation, multilingualism, a video of pronunciation, an image of a word, discussion, collaborative edit, the rank of words, hints, learning tools, thesaurus, paid services, sharing content, hyperlinks in a definition, registration, lists of words, mobile version, etc. Based on the additional tools of online dictionaries we created a diagram that shows the functionality of analyzed platforms.

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Baluk, Nadia, Natalia Basij, Larysa Buk et Olha Vovchanska. VR/AR-TECHNOLOGIES – NEW CONTENT OF THE NEW MEDIA. Ivan Franko National University of Lviv, février 2021. http://dx.doi.org/10.30970/vjo.2021.49.11074.

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The article analyzes the peculiarities of the media content shaping and transformation in the convergent dimension of cross-media, taking into account the possibilities of augmented reality. With the help of the principles of objectivity, complexity and reliability in scientific research, a number of general scientific and special methods are used: method of analysis, synthesis, generalization, method of monitoring, observation, problem-thematic, typological and discursive methods. According to the form of information presentation, such types of media content as visual, audio, verbal and combined are defined and characterized. The most important in journalism is verbal content, it is the one that carries the main information load. The dynamic development of converged media leads to the dominance of image and video content; the likelihood of increasing the secondary content of the text increases. Given the market situation, the effective information product is a combined content that combines text with images, spreadsheets with video, animation with infographics, etc. Increasing number of new media are using applications and website platforms to interact with recipients. To proceed, the peculiarities of the new content of new media with the involvement of augmented reality are determined. Examples of successful interactive communication between recipients, the leading news agencies and commercial structures are provided. The conditions for effective use of VR / AR-technologies in the media content of new media, the involvement of viewers in changing stories with augmented reality are determined. The so-called immersive effect with the use of VR / AR-technologies involves complete immersion, immersion of the interested audience in the essence of the event being relayed. This interaction can be achieved through different types of VR video interactivity. One of the most important results of using VR content is the spatio-temporal and emotional immersion of viewers in the plot. The recipient turns from an external observer into an internal one; but his constant participation requires that the user preferences are taken into account. Factors such as satisfaction, positive reinforcement, empathy, and value influence the choice of VR / AR content by viewers.

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Symonenko, Svitlana V., Viacheslav V. Osadchyi, Svitlana O. Sysoieva, Kateryna P. Osadcha et Albert A. Azaryan. Cloud technologies for enhancing communication of IT-professionals. [б. в.], juillet 2020. http://dx.doi.org/10.31812/123456789/3861.

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The paper deals with the urgent problem of enabling better communication of IT-specialists in their business and interpersonal interaction using information and communication technologies, including cloud technologies. It is emphasized, that effective communication is an integral part of the successful professional work of IT-professionals, but in recent years it has undergone significant transformations, which have been expressed in new forms and means of communication, its content changes, its complications and volume increases, the need to improve its accuracy, and the level of understanding for a wide range of people. Certain peculiarities of communication in the IT-environment have been discussed. It is noted that typical forms of communication in the IT-environment are synchronous and asynchronous ones. The authors insist that during their professional career IT-specialists communicate in the professional community from a variety of positions and common types of task formulation can be expressed through verbal or symbolic communication means. Due to the specifics of their professional activities, IT-professionals often need to communicate using synchronous communication (chats, video chats, audio chats, instant messaging) and asynchronous communication (email, forums, comments) tools, hence there is a demand to teach corresponding communication skills at universities. Certain practical examples of teaching communication skills using modern technologies are given. Advantages of cloud technologies for better communication within a company or an educational institution are presented. Microsoft Office 365 services, which can be successfully used to enable better communication and collaboration within a company or an educational institution are analyzed.

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