2005, Volume 7, Issue 10
Strategic Study of CAE >> 2005, Volume 7, Issue 10
Research of Lossless Image Compression Base on Level-scalability
1. School of Imformation , Zhejiang Univ. of Technology, Hangzhou 310032, China
2. School of Electronic Technoloty and Engineering, Jilin Univ. , Changchun 130021, China
3. Zhejiang Province Linhai Power Supply Bureau , Linhai, Zhejiang 317000, China
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Abstract
A level-embedded lossless image compression method for continuous-tone still images is presented. Level (bit-plane) scalability is achieved by separating the image into two layers (the base layer and the residual layer) before compression. Excellent compression performance is obtained by exploiting both spatial and interlevel correlations. A comparison of the proposed scheme with a number of scalable and non-scalable lossless image compression algorithms indicates that the level-embedded compression incurs only a small penalty in compression efficiency over non-scalable lossless compression, while offering the significant benefit of level-scalability.
Keywords
data processing techniques ; lossless image compression ; context-based model ; embedded level
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References
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