Adaptive image filtering based on a distance transform

Details Adaptive image filtering based on a distance transform Adaptive image filtering based on a distance transform

2006-02-28

2006-02-28

Lee, Thomas D. (Department: 2624)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S001900, C358S003260

Reexamination Certificate

active

07006255

ABSTRACT:
A method for reducing visual artifacts in reconstructed images. One embodiment of the method determines edge energy for each pixel in the image and then compares the edge energy for each pixel to a threshold, producing an edge map. A distance transform is then used to produce a filter map and a filter is applied to pixel in the image, such that the filter applied is dependent upon a filter map value for each pixel. An output value for each pixel is then produced.

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