Lossless wavelet image coding using layered coefficient partitioning

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)22_Publication in policy or professional journal

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Original languageEnglish
Journal / PublicationProceedings - IEEE International Symposium on Circuits and Systems
Publication statusPublished - 2002


Title2002 IEEE International Symposium on Circuits and Systems
PlaceUnited States
CityPhoenix, AZ
Period26 - 29 May 2002


A layered coefficient partitioning (LCP) scheme, which splits integer wavelet coefficients into multiple layers is introduced. The multilayer approach provides a better way to exploit the correlation among the coefficients. An image coding algorithm based on LCP is presented. The proposed algorithm gives improvement in both the lossless and lossy coding performance over the existing wavelet transform based lossless image coders. Experimental results show that the proposed LCP coder produces lossless rates competitive to some of the best performing spatial domain lossless coding schemes and constantly outperforms other multirate coders such as S+P and JPEG-2000 by about 3%-4%. The lossy performance improvement is about 1 to 3 dB (PSNR) in 0.2 to 3.2 bpp range as compared with S+P coder.