Cepstrum-based registration of translated images using one-dimensional projections

被引:0
|
作者
Sarnel, H [1 ]
机构
[1] Dokuz Eylul Univ, Dept Elect & Elect Engn, TR-35160 Izmir, Turkey
来源
6TH WORLD MULTICONFERENCE ON SYSTEMICS, CYBERNETICS AND INFORMATICS, VOL III, PROCEEDINGS: IMAGE, ACOUSTIC, SPEECH AND SIGNAL PROCESSING I | 2002年
关键词
image registration; cepstrum technique; image projections; phase correlation; cepstral difference;
D O I
暂无
中图分类号
TP31 [计算机软件];
学科分类号
081202 ; 0835 ;
摘要
The 2-D phase correlation and tile 2-D cepstrum technique are known as two solutions to the translation-based image registration problem. However, both methods have a large computational load. Satisfactory results were obtained [7] in a smaller translation range by applying phase correlations to the 1-D projections of images to reduce the computational load. This paper presents a new algorithm based on the application of the cepstrum technique to tile image projections in a similar way. An enhanced cepstrum technique is developed by subtracting the cepstrum of the projection differences from the cepstrum of the projection additions. A superior performance compared to that of the 1-D phase correlation can be obtained by whitening the power spectrum by the square-root instead of the logarithm and using a high-pass filter afterwards. The algorithm yields larger translation ranges in registering noisy images and remarkably outperforms the phase correlation in tile case of different degrees of blurring between images.
引用
收藏
页码:152 / 155
页数:4
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