Rotation-invariant phase-shifting joint transform correlator by use of circular harmonic expansion

被引：2
|
作者：
Wang, ZQ [1 ]
Guan, JH [1 ]
Mu, GG [1 ]
Fu, RL [1 ]
机构：
[1] Nankai Univ, Inst Modern Opt, Optoelect Informat Sci & Technol Lab, EMC, Tianjin 300071, Peoples R China
来源：
OPTICAL ENGINEERING | 2000年 / 39卷 / 10期
关键词：
joint transform correlation; circular harmonic expansion; rotation-invariant; phase-shifting;
D O I：
10.1117/1.1286417
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The performance merits of the phase-shifting joint transform correlator (PSJTC) are evaluated based on the criteria of light efficiency and discrimination capability. The PSJTC is shown to possess much higher light efficiency (three orders of magnitude) and much better discrimination capability (three times with the selected images) than does the conventional joint transform correlator (JTC). The PSJTC is combined with the circular harmonic expansion to achieve a full rotation-invariant correlation with high light efficiency and high discrimination capability. Computer simulation results and 3-D computer plots are presented. (C) 2000 Society of Photo-Optical Instrumentation Engineers. [S0091-3286(00)01508-7].
引用
收藏
页码：2595 / 2600
页数：6
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