Hiding-based compression for improved color image coding
Patrizio Campisi, Deepa Kundur, Dimitrios Hatzinakos, Alessandro Neri · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2002
This paper considers the use of data hiding strategies for improved color image compression. Specifically, color information is piggybacked on the luminance component of the image in order to reduce the overall signal storage requirements. A practical wavelet-based data hiding scheme is proposed in which selected perceptually irrelevant luminance bands are replaced with perceptually salient chrominance components. Simulation results demonstrate the improvement in compression quality of the proposed scheme to SPIHT and JPEG at low bit rates. The novel technique also has the advantage that it can be used to further reduce the storage requirements of algorithms such as SPIHT which is optimized for grayscale image compression.