摘要
在基于块分割的分形图像压缩编码研究基础上，提出了一种基于区域分割和十字搜索模型的分形图像压缩编码新方法，实验结果表明，该方法与基于块分割的分形图像压缩编码方法相比，在保持恢复图像质量的前提下，压缩比和编码速度都有了显著的提高，是一种有效的分形图像压缩编码方法。
In this paper we propose a regionbased transformation that extends the blockbased scheme. In our algorithm,the support S of the digital image f to be encoded is partitioned into a set of nonoverlapping regions of variable size and shape. These regions which can be large and irregularly shaped segments of the image form the range of the transformation. The results indicate that at the same signal to noise ratio, fractal image compression regionbased achieves a higher compression ratio over the simple blockbased scheme,and that our algorithm is faster than the blockbased system because of less searching.
出处
《通信学报》
EI
CSCD
北大核心
1998年第2期20-25,共6页
Journal on Communications
基金
国家自然科学基金
关键词
分形图像压缩
迭代函数系统
图像编码
区域分割
fractal image compression,Iterated Function System,image coding,region partition
