Characterizing Young's fringes' orientation and spacing by Fourier transform and Radon transform

被引：6
作者：
Kemao, Q [1 ]
Asundi, A [1 ]
机构：
[1] Nanyang Technol Univ, Sch MPE, Nanyang 639798, Singapore
来源：
OPTICS AND LASER TECHNOLOGY | 2002年 / 34卷 / 07期
关键词：
fringe orientation; fringe spacing; Fourier transform; Radon transform;
D O I：
10.1016/S0030-3992(02)00061-0
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Orientation and spacing are important features of fringe patterns, especially in speckle photography when the displacement information of the object is determined by pointwisely filtering the double-exposure specklegram. The Fourier transform and Radon transform are both simple and effective tools for solving this problem, which extract the information in spectral domain and spatial domain, respectively. A hybrid method combining Radon transform and Fourier transform is also possible. The results can be further improved by enhanced Fourier transform and enhanced Radon transform. The theories, as well as real applications, are given in this paper. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：527 / 532
页数：6
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