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Proceedings Paper

Lifting-based reversible color transformations for image compression
Author(s): Henrique S. Malvar; Gary J. Sullivan; Sridhar Srinivasan
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Paper Abstract

This paper reviews a set of color spaces that allow reversible mapping between red-green-blue and luma-chroma representations in integer arithmetic. The YCoCg transform and its reversible form YCoCg-R can improve coding gain by over 0.5 dB with respect to the popular YCrCb transform, while achieving much lower computational complexity. We also present extensions of the YCoCg transform for four-channel CMYK pixel data. Thanks to their reversibility under integer arithmetic, these transforms are useful for both lossy and lossless compression. Versions of these transforms are used in the HD Photo image coding technology (which is the basis for the upcoming JPEG XR standard) and in recent editions of the H.264/MPEG-4 AVC video coding standard.

Paper Details

Date Published: 13 September 2008
PDF: 10 pages
Proc. SPIE 7073, Applications of Digital Image Processing XXXI, 707307 (13 September 2008); doi: 10.1117/12.797091
Show Author Affiliations
Henrique S. Malvar, Microsoft Corp. (United States)
Gary J. Sullivan, Microsoft Corp. (United States)
Sridhar Srinivasan, Microsoft Corp. (United States)

Published in SPIE Proceedings Vol. 7073:
Applications of Digital Image Processing XXXI
Andrew G. Tescher, Editor(s)

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