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Iterative Image Warping
Author(s) -
Bowles Huw,
Mitchell Kenny,
Sumner Robert W.,
Moore Jeremy,
Gross Markus
Publication year - 2012
Publication title -
computer graphics forum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 120
eISSN - 1467-8659
pISSN - 0167-7055
DOI - 10.1111/j.1467-8659.2012.03002.x
Subject(s) - image warping , computer science , rendering (computer graphics) , artificial intelligence , computer vision , upsampling , image based modeling and rendering , exploit , 3d rendering , tiled rendering , offset (computer science) , computer graphics (images) , software rendering , image (mathematics) , computer graphics , 3d computer graphics , computer security , programming language
Abstract Animated image sequences often exhibit a large amount of inter‐frame coherence which standard rendering algorithms and pipelines are ill‐equipped to exploit, limiting their efficiency. To address this inefficiency we transfer rendering results across frames using a novel image warping algorithm based on fixed point iteration. We analyze the behavior of the iteration and describe two alternative algorithms designed to suit different performance requirements. Further, to demonstrate the versatility of our approach we apply it to a number of spatio‐temporal rendering problems including 30‐to‐60Hz frame upsampling, stereoscopic 3D conversion, defocus and motion blur. Finally we compare our approach against existing image warping methods and demonstrate a significant performance improvement.