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Effect of thresholding schemes on the correlation peak intensity in a joint transform correlator
Conference proceeding

Effect of thresholding schemes on the correlation peak intensity in a joint transform correlator

M.S. Alam and M.A. Karim
IEEE National Aerospace and Electronics Conference, 1992, pp.1117-1123 vol.3
1992
DOI: https://doi.org/10.1109/NAECON.1992.220626

Abstract

Autocorrelation Charge coupled devices Computational modeling Correlators Liquid crystal devices Liquid crystal displays Optical arrays Optical devices Sensor arrays
Investigates the effect of different binarization threshold schemes such as average, median, and segmented thresholding on the correlation peak intensity of a binary joint transform correlator (JTC). The optical implementation of a real-time JTC using two liquid crystal television displays and a charge-coupled device (CCD) detector array is considered. Simulation results show that the median thresholding yields the highest correlation peak intensity, but needs maximum computation time. Segmented thresholding yields better autocorrelations peaks and requires about 50% less computation time than median thresholding.< >

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