2006 IEEE International Conference on Multimedia and Expo
An New Coefficients Transform Matrix for the Transform Domain MPEG-2 TO H.264/AVC Transcoding
Toronto, ON, Canada
July 09-July 12
ISBN: 1-4244-0366-7
Gao Chen, Institute of Computing Technology, Chinese Academy of Sciences Beijing, 100080, China; Graduate School of the Chinese Academy of Sciences, Beijing, 100039, China. Email: chengao@ict.ac.cn
Shouxun Lin, Institute of Computing Technology, Chinese Academy of Sciences Beijing, 100080, China. Email: sxlin@ict.ac.cn
Yongdong Zhang, Institute of Computing Technology, Chinese Academy of Sciences Beijing, 100080, China. Email: zhyd@ict.ac.cn
Gang Cao, Institute of Computing Technology, Chinese Academy of Sciences Beijing, 100080, China. Email: gcao@ict.ac.cn
In this paper, a fast transform method is proposed to convert MPEG-2 8-tap discrete cosine transform (DCT) coefficients to H.264/AVC 4-tap integer transform coefficients directly in the transform domain. The proposed transform method saves 16 operations for each 8?8 DCT block by utilizing a novel transform kernel matrix and a fast computing method for multiplication of this new matrix. The simulation results show that the proposed method causes only a very little quality degradation, which is completely negligible in practice with the maximum value lower than 8?10-3 dB, as compared with Jun Xin's method. Hence, it can be efficiently used in the transform-domain MPEG-2 to H.264 transcoding.
Citation:
Gao Chen, Shouxun Lin, Yongdong Zhang, Gang Cao, "An New Coefficients Transform Matrix for the Transform Domain MPEG-2 TO H.264/AVC Transcoding," icme, pp.321-324, 2006 IEEE International Conference on Multimedia and Expo, 2006
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