ROTATIONAL INVARIANT PATTERN-RECOGNITION USING A COMPOSITE CIRCULAR HARMONIC AND 2D ISOTROPIC MEXICAN-HAT WAVELET FILTER

被引：5
|
作者：
CHENG, YS
LIANG, TC
机构：
[1] Institute of Optical Sciences, National Central University, Chung-Li
来源：
OPTICS COMMUNICATIONS | 1994年 / 112卷 / 1-2期
关键词：
D O I：
10.1016/0030-4018(94)90071-X
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
An improved shift- and rotational-invariant filter using wavelet transform and circular harmonic filtering at the same time is proposed. Computer simulation has shown that the filter is better than phase-only circular harmonic filter in peak sharpness, discriminating ability, SNR and tolerance of position error of the filter. Furthermore, this filter possesses high diffraction efficiency.
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页码：9 / 15
页数：7
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