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- Title
Iterative Image Warping.
- Authors
Bowles, Huw; Mitchell, Kenny; Sumner, Robert W.; Moore, Jeremy; Gross, Markus
- 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.
- Subjects
ITERATIVE methods (Mathematics); IMAGE processing; COMPUTER-generated imagery; RENDERING algorithms; FIXED point theory; SPATIO-temporal variation; THREE-dimensional imaging; COMPUTER graphics
- Publication
Computer Graphics Forum, 2012, Vol 31, Issue 2pt1, p237
- ISSN
0167-7055
- Publication type
Article
- DOI
10.1111/j.1467-8659.2012.03002.x