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

✍ Scribed by Qian Kemao; Anand Asundi

• Book ID: 104159737
• Publisher: Elsevier Science
• Year: 2002
• Tongue: English
• Weight: 299 KB
• Volume: 34
• Category: Article
• ISSN: 0030-3992
• DOI: 10.1016/s0030-3992(02)00061-0

✦ Synopsis

Orientation and spacing are important features of fringe patterns, especially in speckle photography when the displacement information of the object is determined by pointwisely ÿltering the double-exposure specklegram. The Fourier transform and Radon transform are both simple and e ective 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.