Color Image Coding by using Inter-Color Correlation
- Xing San ,
- Hua Cai ,
- Jiang Li
Published by Institute of Electrical and Electronics Engineers, Inc.
Inter-color correlation between the luminance component and chrominance components has been utilized for color image coding for years. However, the correlation has not been clearly analyzed. In this paper, we analyze the inter-color correlation and answer two questions related to color image coding: (1) what kind of intercolor correlation exists in color images after the discrete wavelet transform?; and, (2) how strong is it? This analysis helps us to and a most suitable inter-color context and eventually leads to a new embedded color image codec. By using the discovered inter-color context, signi cant performance improvement can be achieved when encoding chrominance components.
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