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.

引用

页码：9 / 15

页数：7