Real-time stereo-based view synthesis algorithms / Sammy Rogmans in Signal processing. Image communication, Vol. 24 N° 1/2 (Janvier 2009)  

Public ISBD [article]  inSignal processing. Image communication > Vol. 24 N° 1/2 (Janvier 2009) . - pp. 49-64 Titre : Real-time stereo-based view synthesis algorithms : a unified framework and evaluation on commodity GPUs Type de document : texte imprimé Auteurs : Sammy Rogmans, Auteur ; Jiangbo Lu, Auteur ; Philippe Bekaert, Auteur Article en page(s) : pp. 49-64 Note générale : Electronique Langues : Anglais (eng) Mots-clés : Stereo correspondence View synthesis Image-based rendering Performance evaluation GPGPU Index. décimale : 621.382 Dispositifs électroniques utilisant les effets des corps solides. Dispositifs semi-conducteurs Résumé : Novel view synthesis based on dense stereo correspondence is an active research problem. Despite that many algorithms have been proposed recently, this flourishing, cross-area research field still remains relatively less structured than its front-end constituent part, stereo correspondence. Moreover, so far little work has been done to assess different stereo-based view synthesis algorithms, particularly when real-time execution is enforced as a hard application constraint. In this paper, we first propose a unified framework that seamlessly connects stereo correspondence and view synthesis. The proposed framework dissects the typical algorithms into a common set of individual functional modules, allowing the comparison of various design decisions. Aligned with this algorithmic framework, we have developed a flexible GPU-accelerated software model, which contains optimized implementations of several recent real-time algorithms, specifically focusing on local cost aggregation and image warping modules. Based on this common software model running on graphics hardware, we evaluate the relative performance of various design combinations in terms of both view synthesis quality and real-time processing speed. This comparative evaluation leads to a number of observations, and hence offers useful guides to the future design of real-time stereo-based view synthesis algorithms. DEWEY : 361.382 ISSN : 0923-5965 En ligne : http://www.sciencedirect.com/science?_ob=PublicationURL&_tockey=%23TOC%235640%23 [...] [article] Real-time stereo-based view synthesis algorithms : a unified framework and evaluation on commodity GPUs [texte imprimé] / Sammy Rogmans, Auteur ; Jiangbo Lu, Auteur ; Philippe Bekaert, Auteur . - pp. 49-64. Electronique Langues : Anglais (eng) in Signal processing. Image communication > Vol. 24 N° 1/2 (Janvier 2009) . - pp. 49-64 Mots-clés : Stereo correspondence View synthesis Image-based rendering Performance evaluation GPGPU Index. décimale : 621.382 Dispositifs électroniques utilisant les effets des corps solides. Dispositifs semi-conducteurs Résumé : Novel view synthesis based on dense stereo correspondence is an active research problem. Despite that many algorithms have been proposed recently, this flourishing, cross-area research field still remains relatively less structured than its front-end constituent part, stereo correspondence. Moreover, so far little work has been done to assess different stereo-based view synthesis algorithms, particularly when real-time execution is enforced as a hard application constraint. In this paper, we first propose a unified framework that seamlessly connects stereo correspondence and view synthesis. The proposed framework dissects the typical algorithms into a common set of individual functional modules, allowing the comparison of various design decisions. Aligned with this algorithmic framework, we have developed a flexible GPU-accelerated software model, which contains optimized implementations of several recent real-time algorithms, specifically focusing on local cost aggregation and image warping modules. Based on this common software model running on graphics hardware, we evaluate the relative performance of various design combinations in terms of both view synthesis quality and real-time processing speed. This comparative evaluation leads to a number of observations, and hence offers useful guides to the future design of real-time stereo-based view synthesis algorithms. DEWEY : 361.382 ISSN : 0923-5965 En ligne : http://www.sciencedirect.com/science?_ob=PublicationURL&_tockey=%23TOC%235640%23 [...]

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