Minimizing blocking artifacts in a filtered image

Details Minimizing blocking artifacts in a filtered image Minimizing blocking artifacts in a filtered image

1995-12-15

2000-11-21

Couso, Jose L.

Image analysis

Image enhancement or restoration

Artifact removal or suppression

382232, G06K 940

Patent

active

061514209

ABSTRACT:
In order to prevent or minimize blocking artifacts from appearing in an image due to independent processing of each overlapped block of an image by one of many different filters, true pixel correction values are calculated, then added to each pixel of the image so that the transition between adjacent blocks of pixels will be smooth. This corrective method coined "stitching" is applied in either the spatial or the frequency domain to each block of filtered pixels in the image and generally includes the steps of:

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patent: 5729631 (1998-03-01), Wober et al.
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Hajjahmad et al.; U.S. Patent Application No. 08/441,383.

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