Restoration of images with undefined pixel values

Details Restoration of images with undefined pixel values Restoration of images with undefined pixel values

1994-11-07

1997-04-22

Couso, Yon J.

Image analysis

Image enhancement or restoration

382275, G06K 940

Patent

active

056235585

ABSTRACT:
A system for restoring images with undefined pixel values at known locations is described. The threshold value and a neighborhood configuration are defined and are used to restore the image. The neighborhood configuration defines a geometric region, typically a fixed number of pixels, surrounding the target pixel. The threshold value specifies a number of pixels in the neighborhood configuration for which pixel values are known. In our system, for each pixel in one of the unknown regions an analysis is performed over the entire area defined by the neighborhood configuration. If the threshold number of pixels within that region is known, then the value of the unknown pixel is calculated. If the threshold value is not achieved, then analysis proceeds to the next pixel location. By continuing the process and reducing the threshold value when necessary or desirable, the complete image can be restored.

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patent: 5214470 (1993-05-01), Denber
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patent: 5237628 (1993-08-01), Levitan

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