System and method for reducing digital image noise

Details System and method for reducing digital image noise System and method for reducing digital image noise

1990-09-17

1992-02-25

Razavi, Michael

Image analysis

Histogram processing

For setting a threshold

382 27, 382 43, 382 49, 364574, 364725, G06K 940, G06K 956, G06K 954, H03F 126

Patent

active

050919725

ABSTRACT:
The present invention efficiently and quickly computes the fit parameters for a noise reduction method wherein a digital image is first decomposed into two types of regions; smooth regions and edge regions. Within the digitized image a plane fit parameter is computed at every point. The computation of the fit parameters incorporates convolutions carried out in an efficient manner by the use of a slide sum technique.

REFERENCES:
patent: 4139303 (1979-02-01), Carlson et al.

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