White-light optical information processing and holography

Progress has been made on the white-light optical information processing and holography research program. Work was completed on a broad band color image deblurring and this technique was extended to the restoration of 2-D out-of-focused color photographic images. A new technique of white-light density pseudocolor encoder was developed for three primary colors. This white-light pseudocolor encoder is very cost effective and offers a high image resolution, which would be an excellent alternation for the digital counterpart. We have also in this period conducted a measuring technique for the degree of coherence in the Fourier plane of the grating-based white-light signal processor. We have shown that high degree of coherence is achievable with a signal sampling grating at the input plane. Thus the white-light technique is capable of processing the information in complex amplitude and it is very suitable for color signal processing. In this phase of research we have also studied the effect of coherence due to source encoding, signal sampling and spectral band filtering, as applied to the white-light signal processing.