An FFT-based technique for fast fractal image compression

被引:5
|
作者
Ramkumar, M [1 ]
Anand, GV [1 ]
机构
[1] Indian Inst Sci, Dept Elect Commun Engn, Bangalore 560012, Karnataka, India
关键词
fractal image compression; block matching; FFT-based technique;
D O I
10.1016/S0165-1684(97)00162-X
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
We present a new FFT-based technique of fractal image compression which can significantly speed up the process of matching domain and range blocks. In this method the isometric transformations of a domain block are chosen to permit block matching through cross correlation of range and domain blocks, which is implemented through the FFT. A suboptimal choice of domain blocks by performing a magnitude Fourier domain comparison of the range and domain blocks prior to correlation further speeds up the block matching process. (C) 1997 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:263 / 268
页数:6
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