期刊论文

中文

华中师范大学学报(自然科学版)

1000-1190

2000

34

2

150-152,156

10.19603/j.cnki.1000-1190.2000.02.008

本校为第一机构

在深入研究小波分析及迭代分形原理的基础上 ,提出了一种基于小波分析和迭代分形的混合图象编码方法 :先对原始图象进行隔行取样 ,然后在构造小波树的基础上 ,提出了基于分形和小波变换的自适应混合图象压缩算法 ,未被传输的象素在解码时利用已传输的象素经过双线性内插计算而恢复 .计算机模拟实验表明 :本文提出的压缩方法与基于亚取样分形插值预测的混合图象编码方法相比 ,在信噪比相同的情况下 ,压缩比提高了 6.9,证明此种压缩编码方法是可行的 ,具有实际应用价值 .

After making an intensive study of the principle of wavelet analysis and iterated fractal,this paper presents a hybrid image coding method based on wavelet analysis and iterated fractal.First,the original image is interlaced scanned.Secondly,an adaptive partition algorithm is given which can split the wavelet subtree into children subtrees according to local image complexity.Lastly,the nonconveyed pixels are renewed by double line interpolation.Experimental result shows that this algorithm is better than The...