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Efficient transform using canonical signed digit in reversible color transforms

Title
Efficient transform using canonical signed digit in reversible color transforms
Authors
Yang S.Lee B.-U.
Ewha Authors
이병욱양세정
SCOPUS Author ID
이병욱scopus; 양세정scopus
Issue Date
2009
Journal Title
Journal of Electronic Imaging
ISSN
1017-9909JCR Link
Citation
vol. 18, no. 3
Indexed
SCIE; SCOPUS WOS scopus
Abstract
Color transforms are important methods in the analysis and processing of images. Image color transform and its inverse transform should be reversible for lossless image processing applications. However, color conversions are not reversible due to finite precision of the conversion coefficients. To overcome this limitation, reversible color transforms have been developed. Color integer transform requires multiplications of coefficients, which are implemented with shift and add operations in most cases. We propose to use canonical signed digit (CSD) representation of reversible color transform coefficients and exploitation of their common subexpressions to reduce the complexity of the hardware implementation significantly. We demonstrate roughly 50% reduction in computation with the proposed method. © 2009 SPIE and IS & T.
DOI
10.1117/1.3206966
Appears in Collections:
엘텍공과대학 > 전자공학과 > Journal papers
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