System and method for reducing noise in images

Television – Image signal processing circuitry specific to television – Combined noise reduction and transition sharpening

Reexamination Certificate

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Details

C348S618000, C348S607000, C382S190000

Reexamination Certificate

active

07319494

ABSTRACT:
A method is provided for selecting a filter for interpolating a target pixel for reducing noise in an image. The method comprises the following steps. A plurality of pixels along a predetermined contour is compared with a plurality of predefined patterns. The patterns represent visually significant patterns possible along said contour. A filter is selected from a predefined set of filters in accordance with the results of the comparison.

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Ford, G.E., R.R. Estes, and H. Chen, “Space Scale Analysis for Image Sampling and Interpolation” (CIPIC, Center for Image Processing and Integrated Computing, University of California) pp. III-165 to III-168.
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