Morphological dilation image coding with context weights prediction

作者：Wu, Jiaji^*; Paul, Anand; Xing, Yan; Fang, Yong; Jeong, Jechang; Jiao, Licheng; Shi, Guangming

来源：Signal Processing: Image Communication , 2010, 25(10): 717-728.

DOI：10.1016/j.image.2010.10.003

• Quad-tree coding
• Morphological dilation
• Variable-length group test coding
• Weights training

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 a coefficient's significance degree more accurately, which can be used for two dilation technologies. Experimental results show that our proposed method outperforms the state of the art image coding algorithms available today.

• 出版日期2010-11
• 单位西北农林科技大学; 西安电子科技大学