Abstract

A partially coherent image enhancement system capable of notching unwanted sinusoids has been previously proposed.¹ This system has a fixed random checkerboard mask and a source that can be modified to notch sinusoids of various spatial frequencies. It has been suggested that the partially coherent notching system offers improved noise performance relative to a coherent notching system. In this work, the improved noise performance is explained using Fourier optics techniques. In addition, the results of a laboratory investigation demonstrate the improved noise performance.

© 1991 Optical Society of America