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DCC
2004
IEEE

Efficient Bit Allocation for Dependent Video Coding

14 years 3 months ago
Efficient Bit Allocation for Dependent Video Coding
A steepest descent based bit allocation method with polynomial iteration complexity for minimizing the sum of frame distortions under a total bit rate constraint is presented for a predictive video coder. Previous algorithms that solve this problem have been based on Lagrangian Relaxation followed by unconstrained optimization. Some of these methods have complexity exponential in the prediction depth in the worst case. Moreover, the convergence properties of the faster methods are difficult to analyze. A steepest descent method is utilized here for its comparatively low computational complexity, excellent performance and ease of analysis. Sufficient conditions for global optimality are presented without assuming independent encoding of frames. Results for dependent bit allocation through the assignment of quantizer step-sizes to frames in MPEG-2 encoded sequences suggest that these optimality conditions are to
Yegnaswamy Sermadevi, Sheila S. Hemami
Added 25 Dec 2009
Updated 25 Dec 2009
Type Conference
Year 2004
Where DCC
Authors Yegnaswamy Sermadevi, Sheila S. Hemami
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