{"title":"An New Coefficients Transform Matrix for the Transform Domain MPEG-2 TO H.264/AVC Transcoding","authors":"Gao Chen, Shouxun Lin, Yongdong Zhang, Gang Cao","doi":"10.1109/ICME.2006.262463","DOIUrl":null,"url":null,"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","PeriodicalId":339258,"journal":{"name":"2006 IEEE International Conference on Multimedia and Expo","volume":"148 Pt 3 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2006-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2006 IEEE International Conference on Multimedia and Expo","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICME.2006.262463","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3
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
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