Phase Control by Polarization in Coherent Spatial Filtering*
- 1 July 1966
- journal article
- Published by Optica Publishing Group in Journal of the Optical Society of America
- Vol. 56 (7), 869-871
- https://doi.org/10.1364/josa.56.000869
Abstract
A new and simple technique for 0° or 180° phase generation for spatial filters has been developed. The method employs photographic printing and polarized light. Among the possible applications are those of symmetrical shape detection and image enhancement.The phase-control concept was developed using an optical spatial-filtering apparatus for matched filtering. Although the examples given are from the target-recognition field, the application of the method is in no way limited to this field.Keywords
This publication has 2 references indexed in Scilit:
- An introduction to matched filtersIEEE Transactions on Information Theory, 1960
- Optical data processing and filtering systemsIEEE Transactions on Information Theory, 1960