An New Coefficients Transform Matrix for the Transform Domain MPEG-2 TO H.264/AVC Transcoding

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.

• Type: Conference
• Year: 2006
• Where: ICMCS
• Authors: Gao Chen, Shouxun Lin, Yongdong Zhang, Gang Cao
• Keywords: Fast Transform Method, ICMCS 2006, Integer Transform Coefficients, Transform Method