Digital Median Filters

Gerald C. Holst

doi:10.1117/12.944282

3 May 1988 Digital Median Filters

Gerald C. Holst

Proceedings Volume 0890, Infrared Systems and Components II; (1988) https://doi.org/10.1117/12.944282
Event: 1988 Los Angeles Symposium: O-E/LASE '88, 1988, Los Angeles, CA, United States

Abstract

Median filters are of interest because they eliminate impulse noise and preserve image edges. The output of these nonlinear filters depends upon the local statistics and therefore, no analytic expression exists to describe filter performance. Performance can only be inferred by using representative inputs. For imaging systems operating at or near the Nyquist frequency, median filters will eliminate unresolved and small targets. The effects of median filters are noticeable on periodic targets such as the four-bar resolution target used for minimum resolvable temperature measurements.

Citation Download Citation

Gerald C. Holst "Digital Median Filters", Proc. SPIE 0890, Infrared Systems and Components II, (3 May 1988); https://doi.org/10.1117/12.944282

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