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Optical Engineering

Effects of band-pass sampling on joint transform correlation
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Paper Abstract

Joint transform correlation involves the recording and display of the joint power spectrum by sampling devices. The Nyquist condition for sampling a joint power spectrum depends on the distance between the input subimages, the size of the subimages, the focal length of the Fourier lens, and the light wavelength. Since the joint power spectrum is equivalent to a bandpass function, an undersampled joint power spectrum will lead to multiple interlaced outputs and the correlation spots and DC terms could either overlap or remain separate. The specifications pertaining to the sampling device are identified so as to be able to distinguish the correlation spots of interest in the interlaced output.

Paper Details

Date Published: 1 May 1999
PDF: 7 pages
Opt. Eng. 38(5) doi: 10.1117/1.602267
Published in: Optical Engineering Volume 38, Issue 5
Show Author Affiliations
Zikuan Chen, Nankai Univ. (United States)
Mohammad A. Karim, Univ. of Tennessee/Knoxville (United States)
Majeed M. Hayat, Univ. of Dayton (United States)

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