JOINT-TRANSFORM-CORRELATOR-BASED DECONVOLVER WITH IMPROVED PERFORMANCE

The power spectra subtraction technique is introduced to improve the p erformance of the joint-transform-correlator-based deconvolver, which employs the reciprocal of the distorting function power spectrum as it s intensity inverse filter. By subtracting the sum of power spectra of the distorted image and the distorting function, the deconvoler may h ave narrower de output, bigger efficient space-bandwidth product, stro nger deconvolution output and greater background noise resistance. Bot h the theoretical analysis and computer simulation verify these improv ements.