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

Author

Chen, Gao ; Lin, Shouxun ; Zhang, Yongdong ; Cao, Gang

Author_Institution

Inst. of Comput. Technol., Chinese Acad. of Sci., Beijing

fYear

2006

fDate

9-12 July 2006

Firstpage

321

Lastpage

324

Abstract

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 8times8 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 8times10^-33dB, as compared with Jun Xin´ s method. Hence, it can be efficiently used in the transform-domain MPEG-2 to H.264 transcoding

Keywords

code standards; data compression; discrete cosine transforms; matrix algebra; transcoding; video coding; DCT; H.264-AVC transcoding; MPEG-2; discrete cosine transform; integer transform coefficient; moving picture experts group; transform kernel matrix; Automatic voltage control; Computational modeling; Decoding; Discrete cosine transforms; Discrete transforms; Kernel; Matrix converters; Transcoding; Transform coding; Video compression;

fLanguage

English

Publisher

ieee

Conference_Titel

Multimedia and Expo, 2006 IEEE International Conference on

Conference_Location

Toronto, Ont.

Print_ISBN

1-4244-0366-7

Electronic_ISBN

1-4244-0367-7

Type

conf

DOI

10.1109/ICME.2006.262463

Filename

4036601