Feature Enhancement Using Noncoherent Optical Processing

J. M. Florence; H. E. Pettit; W. T. Rhodes

doi:10.1117/12.965616

4 December 1979 Feature Enhancement Using Noncoherent Optical Processing

J. M. Florence, H. E. Pettit, W. T. Rhodes

Proceedings Volume 0201, Optical Pattern Recognition; (1979) https://doi.org/10.1117/12.965616
Event: 23rd Annual Technical Symposium, 1979, San Diego, United States

Abstract

For the past several years, we have been conducting research on hybrid systems that combine nonconventional incoherent optical spatial filtering systems with digital or analog electronics to allow bipolar (and, if desired, complex valued) spatial filtering of self-luminous or incoherently illuminated object distributions [1-4; see also 5-9]. As has been emphasized in previous papers, such systems are free from many of the input problems that characterize coherent spatial filtering systems and are free from the blemish noise characteristic of coherent optical systems in general. Hybrid systems with a bipolar capability are necessary if incoherent spatial filtering is to be applied successfully to a wide range of image processing problems including feature enhancement and pattern recognition. We have recently implemented an experimental system suitable for a wide range of experiments in this area. This paper reports on preliminary tests of this system. We begin with a brief analytical review of incoherent spatial filtering, then consider specific hybrid implementations for bipolar spatial filtering.

Citation Download Citation

J. M. Florence, H. E. Pettit, and W. T. Rhodes "Feature Enhancement Using Noncoherent Optical Processing", Proc. SPIE 0201, Optical Pattern Recognition, (4 December 1979); https://doi.org/10.1117/12.965616

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