Computer Science – Information Theory
Scientific paper
2010-09-29
Computer Science
Information Theory
33 pages, 7 figures, submitted to Signal Processing: Image Communication
Scientific paper
This paper proposes an adaptive morphological dilation image coding with context weights prediction. The new dilation method is not to use fixed models, but to decide whether a coefficient needs to be dilated or not according to the coefficient's predicted significance degree. It includes two key dilation technologies: 1) controlling dilation process with context weights to reduce the output of insignificant coefficients, and 2) using variable-length group test coding with context weights to adjust the coding order and cost as few bits as possible to present the events with large probability. Moreover, we also propose a novel context weight strategy to predict coefficient's significance degree more accurately, which serves for two dilation technologies. Experimental results show that our proposed method outperforms the state of the art image coding algorithms available today.
Fang Yong
Jeong Jechang
Jiao Licheng
Paul Anand
Shi Guangming
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