Title :
A new lossless-DCT for unified lossless/lossy image coding
Author :
Chokchaitam, Somchart ; Iwasahi, M. ; Jitapanaku, Somchai
Author_Institution :
Dept. of Electr. Eng., Thammasat Univ., Bangkok, Thailand
Abstract :
In this report, we propose a new one-dimensional (1D) lossless discrete cosine transform (L-DCT) for unified lossless/lossy image coding. Coding performance of the proposed L-DCT is better than that of the existing L-DCT, especially in high bit rate, because a new signal processing to perform ID L-DCT is required less number of rounding operation. Simulation results confirm an effectiveness of the proposed L-DCT.
Keywords :
discrete cosine transforms; image coding; 1D lossless discrete cosine transform; L-DCT; coding performance; image compression; lossless DCT; lossless image coding; lossy image coding; rounding operation; signal processing; Bit rate; Cities and towns; Decoding; Discrete cosine transforms; Discrete transforms; Image coding; Image converters; Signal processing; Signal processing algorithms; Transform coding;
Conference_Titel :
Circuits and Systems, 2004. MWSCAS '04. The 2004 47th Midwest Symposium on
Print_ISBN :
0-7803-8346-X
DOI :
10.1109/MWSCAS.2004.1354180
