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Proceedings Paper

R-D based quantization in H.264
Author(s): Marta Karczewicz; Peisong Chen; Yan Ye; Rajan Joshi
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Paper Abstract

In this paper, a rate-distortion optimized quantization scheme is described with application to H.264 video encoding. An efficient implementation of H.264 macroblock level adaptive quantization parameter selection is also described. Together these two encoder-only changes can achieve on average over 6% bit rate reduction under common testing conditions that are used in the H.264 standardization community. The described techniques provide this improvement in compression capability while retaining conformance of the encoded data to the H.264 standard. Thus, full compatibility with standard decoders can be achieved when applying these techniques.

Paper Details

Date Published: 2 September 2009
PDF: 8 pages
Proc. SPIE 7443, Applications of Digital Image Processing XXXII, 744314 (2 September 2009); doi: 10.1117/12.831217
Show Author Affiliations
Marta Karczewicz, Qualcomm, Inc. (United States)
Peisong Chen, Qualcomm, Inc. (United States)
Yan Ye, Dolby Labs. Inc. (United States)
Rajan Joshi, Qualcomm, Inc. (United States)


Published in SPIE Proceedings Vol. 7443:
Applications of Digital Image Processing XXXII
Andrew G. Tescher, Editor(s)

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