An efficient scheme of IDCT optimization in H.264 decoding

Guoxing Bao

doi:10.1117/12.887496

4 February 2011 An efficient scheme of IDCT optimization in H.264 decoding

Guoxing Bao

Proceedings Volume 7752, PIAGENG 2010: Photonics and Imaging for Agricultural Engineering; 77520N (2011) https://doi.org/10.1117/12.887496
Event: International Conference on Photonics and Image in Agricultural Engineering (PIAGENG 2010), 2010, Qingdao, China

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.

Citation Download Citation

Guoxing Bao "An efficient scheme of IDCT optimization in H.264 decoding", Proc. SPIE 7752, PIAGENG 2010: Photonics and Imaging for Agricultural Engineering, 77520N (4 February 2011); https://doi.org/10.1117/12.887496

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