Phase-shifting technique applied to circular harmonic-based joint transform correlator

被引：0
|
作者：
Guan, JH [1 ]
Wang, ZQ [1 ]
Liu, HL [1 ]
Liang, BL [1 ]
Mu, GG [1 ]
机构：
[1] Nankai Univ, Inst Modern Opt, Minist Educ China, Optoelect Informat Sci & Technol Lab, Tianjin 300071, Peoples R China
来源：
CHINESE SCIENCE BULLETIN | 2000年 / 45卷 / 20期
关键词：
joint transform correlator; phase-shifting technique; circular harmonic expansion;
D O I：
10.1007/BF02886305
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
The phase-shifting technique is applied to the circular harmonic expansion-based joint transform correlator, Computer simulation has shown that the light efficiency and the discrimination capability are greatly enhanced, and the full rotation invariance is preserved after the phase-shifting technique has been used. A rotation-invariant optical pattern recognition with high discrimination capability and high light efficiency is obtained. The influence of the additive noise on the performance of the correlator is also investigated. However, the anti-noise capability of this kind of correlator still needs improving.
引用
收藏
页码：1908 / 1912
页数：5
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