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Proceedings Paper

Interferogram region spreading technology in spatial domain
Author(s): Jun-hong Su; Lei Chen; Ri-hong Zhu
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Paper Abstract

The kernel of modern interferometry is to obtain necessary surface shape and parameter by processing interferogram with a reasonable algorithm. The circular interferogram must be spread into square region when the interferogram is dealt with by using 2-D FFT arithmetic, which is only applied to numeric discrete data and requires square distributing region. On the basis of the study of the basic principle of interferometry by using 2-D FFT arithmetic, the principle and the method of interferogram region spreading are proposed. This technique has been used in region spreading of an actual interferogram with a satisfactory result. The results indicate that the method, with high processing precision, has established the foundation for phase recovery.

Paper Details

Date Published: 19 May 2006
PDF: 5 pages
Proc. SPIE 6150, 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 615028 (19 May 2006); doi: 10.1117/12.676789
Show Author Affiliations
Jun-hong Su, Xi'an Institute of Technology (China)
Nanjing Univ. of Science and Technology (China)
Lei Chen, Nanjing Univ. of Science and Technology (China)
Ri-hong Zhu, Nanjing Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 6150:
2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment
Xun Hou; Jiahu Yuan; James C. Wyant; Hexin Wang; Sen Han, Editor(s)

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