基于像素分割的改进分形图像压缩算法

摘要

提出了一个类似于图像块分割的快速分形编码算法.首先,利用像素抽样的方式将图像重新组合成新的块区域,选择其中的一个块区域作为模板,然后对模板区域进行分形图像压缩编码.再利用块区域之间的相似性,对其余的块区域进行编码.实验结果表明,本算法在解码图像的质量略有下降的情况下,大大缩短了编码的时间.%A fast fractal coding algorithm was proposed based on pixel dividing.An image was first divided into small regions based on pixel sample before encoding and taked one of the blocks as a mold boad block,then the mold boared block was coding quickly.Based on the similarity of the other blocks and mold board block,the other blocks could be coding more quickly.Experiments on fractal compressing of standard images show that the proposed algorithm reduced the encoding time greatly while the quality of decoding image was reduced slightly.