Methods of zero-order non-coherent filtering |
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| Authors: | D Gorlitz F Lanzl |
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| Institution: | Institut für Angewandte Physik, Universität Hamburg, D-2000 Hamburg 36, Fed. Rep. Germany |
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| Abstract: | Zero-order non-coherent optical filtering can be performed by subtraction of images recorded with two different filters. In this paper filters are studied which differ by the average phase of certain parts in the frequency plane. Band-pass and differentiation filters can be realized in that way. |
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