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	Comparative studs of color transforms for image coding and derivation of integer reversible color transform
	Hao, PW ; Shi, QY
	2000
关键词	LOSSLESS COMPRESSION
英文摘要	A color transform is necessary for better color image coding. In this paper, Me concentrate on a comparative study of color transforms for color image coding in order to find the best one among II published color transforms: YCrCb, NTSC, PAL, HDTV, UVW, XYZ, DCT, DHT, two approximate K-L transforms (K1K2K3 and KLT) and the original reversible color transform (ORCT) adopted in JPEG-2000. Experiment results with JPEG-2000 verification model (VM5.1) are sorted by color transforms and counted rep for all the test images aim diverse bit rates. The sorting scoring table shows that the discrete cosine transform performs best among II tested color transforms at 6 lossy bit rates for all the 2 JPEG-2000 color test images ann other 23 color images we used. Then we derive an integer reversible transform of DCT and an approximate implementation using additions min shifts only for both lossless and lossy color image coding. Experiments with the integer reversible color transforms show that the proposed transform scheme is better than ORCT for lossy image coding.; Computer Science, Artificial Intelligence; Engineering, Electrical & Electronic; CPCI-S(ISTP); 3
语种	英语
内容类型	其他
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/407044]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Hao, PW,Shi, QY. Comparative studs of color transforms for image coding and derivation of integer reversible color transform. 2000-01-01.

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