Laser-diode phase-shifting joint-transform correlator with multiple-object recognition

被引：0
|
作者：
Takahashi, Takeshi
Ishii, Yukihiro
机构：
[1] Univ Ind Technol, Dept Elect Syst Engn, Sagamihara, Kanagawa 2291196, Japan
[2] Tokyo Univ Sci, Dept Appl Phys, Shinjuku Ku, Tokyo 1628601, Japan
来源：
OPTICAL REVIEW | 2006年 / 13卷 / 02期
关键词：
laser diode; wavelength tunability; phase-shifting interferometer; joint-transform phase correlator; multiple-object recognition;
D O I：
10.1007/s10043-006-0053-2
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A joint-transform phase correlation is made by an extracted phase from the joint power spectrum using a phase-shifting Mach-Zehnder interferometer with a wave length-shifted laser diode (LD), and then b numerically Fourier-transforming a measured phase. The algorithm in six steps is insensitive to the power changes in an LD. The phase correlator gives the best discrimination performance. Discriminative multiple-object recognition is performed with no intermodulation noise and artifact noise-free correlation by arranging the multiple objects in a regularly equal-spaced array. The experimental and numerical results are shown. (c) 2006 The Optical Society of Japan.
引用
收藏
页码：53 / 63
页数：11
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