Lossless Compression Algorithm of Halftone Image Based on Fractal Feature
Kong Yue-ping, Huimin Cao, Geng Ye · Jisuanji gongcheng · 2012
(Abstract )In order to solve the problem that fractal image code can not directly used in halftone images, a lossless algorithm is proposed based on improved affine transform with the characteristic of ordered dither images. The transform is used in the extraction of codebook from partitioned images and encoding process, and the Huffman coding is adopted to compress the data. Experimental results show that the algorithm can get better compress efficiency.