Title :
MINMAX bit allocation for quantization-based video coders
Author :
Shavit, Gidon ; Ladner, Richard E. ; Riskin, Eve A.
Author_Institution :
Dept. of Comput. Sci. & Eng., Univ. of Washington, Seattle, WA, USA
Abstract :
Ringenburg et al. (2004) developed MultiStage, a bit-allocation algorithm for embedded video coders, that generates near-constant quality sequences. In this work, we show how the algorithm can be applied to quantization-based coders, and implement it for H.263. We also describe a novel approach for block-level bit allocation for H.263, cast as a variation on the multiple-choice knapsack problem, and show how to solve it efficiently with dynamic programming. Our results show that very stable quality can be achieved using relatively few coding iterations, with very little sacrifice in mean distortion.
Keywords :
code standards; data compression; dynamic programming; embedded systems; image sequences; iterative methods; knapsack problems; minimax techniques; rate distortion theory; video codecs; video coding; H.263; MINMAX bit allocation; MultiStage; block-level bit allocation; coding iterations; dynamic programming; embedded video coders; mean distortion; multiple-choice knapsack problem; near-constant quality sequences; quantization-based video coders; Bit rate; Code standards; Computer science; Constraint optimization; Distortion measurement; Dynamic programming; Lagrangian functions; Minimax techniques; Rate distortion theory; Video compression;
Conference_Titel :
Data Compression Conference, 2005. Proceedings. DCC 2005
Print_ISBN :
0-7695-2309-9
DOI :
10.1109/DCC.2005.53