On compatibility of order-8 integer cosine transforms and the discrete cosine transform
Refereed conference paper presented and published in conference proceedings

香港中文大學研究人員

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摘要The author shows that integer cosine transforms (ICTs) are functionally compatible with discrete cosine transforms (DCTs) that are used in image coding. It is proved that the w-bit ICT can inversely transform exactly represented DCT coefficients with less mean-square-error than the w-bit DCT for w equal to 4, 3 and 2 and scaling factors of ICTs implemented using 8 bits. Conversely, an exactly represented DCT can inversely transform the coefficients from the w-bit ICT with less-mean-square-error than the w-bit DCT. Therefore, the ICTs can be said to be compatible with the DCT. These ICTs, while being considered as new transforms, can also be regarded as alternative and better ways to implement the DCT when the number of bits for representing kernel components are restricted to 4, 3, and 2.
著者Cham W.K., Wu F.S.
會議名稱1990 IEEE Region 10 Conference on Computer and Communication Systems - IEEE TENCON '90
會議開始日24.09.1990
會議完結日27.09.1990
會議地點Hong Kong
會議國家/地區香港
出版年份1990
月份12
日期1
頁次447 - 449
國際標準書號0879425563
語言英式英語

上次更新時間 2021-16-06 於 23:12