Adaptive median filter system

Details Adaptive median filter system Adaptive median filter system

1986-03-21

1987-07-21

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 36, 455307, H04N 521

Patent

active

046822305

ABSTRACT:
An adaptive median filter system is disclosed. Circuitry is arranged to produce successive sets of samples from an input signal which may possibly include noise. An adaptive median filter filters the samples in response to a control signal. Further circuitry estimates the relative density of the noise in the input signal to generate the control signal supplied to the adaptive median filter.

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patent: 4485399 (1984-11-01), Schulz
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patent: 4562470 (1985-12-01), Dinh
"Handbook of Tables for Probability and Statistics", edited by W. H. Beyer, 1966, p. 2.
I. Scollar et al.; "Image Enhancement Using the Median and the Interquartile Distance"; Computer Vision, Graphics, and Image Processing; Academic Press, Inc.; 1984; pp. 236-251.
"VLSI Architecture for a One-Chip Video Median Filter"; Demassieux, et al.; Proceedings IEEE International Conference on Acoustics, Speech and Signal Processing, vol. 3, pp. 1001-1004 (1985).

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