29 April 1999 Non-zero-order joint transform correlator using random phase function in the input plane
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Proceedings Volume 3729, Selected Papers from International Conference on Optics and Optoelectronics '98; (1999) https://doi.org/10.1117/12.346828
Event: Selected Papers from the International Conference on Optics and Optoelectronics, 1998, Dehradun, India
Abstract
We propose a new technique to eliminate zero order in a joint transform correlator (JTC). In the proposed technique, the input target and reference images in a JTC are modulated by identical random phase functions. This results in a sharpening of the zero order as well as the correlation peak in the correlation phase. The zero order can be eliminated by subtracting a constant value from the joint power spectrum. The proposed non-zero order JTC has better discrimination ability than a conventional JTC. A computer simulation study is presented to support the proposed technique.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
G. Unnikrishnan, G. Unnikrishnan, Joby Joseph, Joby Joseph, Kehar Singh, Kehar Singh, } "Non-zero-order joint transform correlator using random phase function in the input plane", Proc. SPIE 3729, Selected Papers from International Conference on Optics and Optoelectronics '98, (29 April 1999); doi: 10.1117/12.346828; https://doi.org/10.1117/12.346828
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