Novel adaptive color space transform and application to image compression

Authors:
Satish Kumar Singh;Shishir Kumar
Affiliations:
Department of Electronics and Communication Engineering, Jaypee University of Engineering and Technology, Madhya Pradesh 473226, India;Department of Computer Science and Engineering, Jaypee University of Engineering and Technology, Madhya Pradesh 473226, India
Venue:
Image Communication
Year:
2011

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Abstract

Various contemporary standards by Joint Picture Expert Group, which is used for compression, exploited the correlation among the color components using a component color space transform before the subband transform stage. The transforms used to de-correlate the colors are primarily the fixed kernel transforms, which are not suitable for large class of images. In this paper an image dependent color space transform (ID-CCT), exploiting the inter-channel redundancy optimally and which is very much suitable for compression has been proposed. Also the comparative performance has been evaluated and a significant improvement has been observed, objectively as well as subjectively over other quantifiable methods.