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Proceedings Paper

An efficient scheme of IDCT optimization in H.264 decoding
Author(s): Guoxing Bao
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Paper Abstract

This paper proposes an efficient scheme of IDCT in H.264 decoder. Firstly, motion compensation residuals of macro-block get from the bit-stream are classified into four cases: only dc coefficient is non-zero, only first row coefficients are non-zero, only first column coefficients are non-zero and others, and it is obvious that inverse transform processing of previous cases can be optimized, so in the second, we use different processing of IDCT in different cases to reduce their complexity. Compared with traditional IDCT scheme, the proposed scheme achieves an average 51.8% reduction in computation complexity without degradation in visual quality.

Paper Details

Date Published: 4 February 2011
PDF: 5 pages
Proc. SPIE 7752, PIAGENG 2010: Photonics and Imaging for Agricultural Engineering, 77520N (4 February 2011); doi: 10.1117/12.887496
Show Author Affiliations
Guoxing Bao, Beijing Institute of Technology (China)

Published in SPIE Proceedings Vol. 7752:
PIAGENG 2010: Photonics and Imaging for Agricultural Engineering
Honghua Tan, Editor(s)

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