Noise reduction method

Details Noise reduction method Noise reduction method

2007-01-23

2007-01-23

Do, Anh Hong (Department: 2624)

Image analysis

Image enhancement or restoration

Edge or contour enhancement

C382S254000, C382S260000

Reexamination Certificate

active

09995458

ABSTRACT:
A method of reducing noise in images formed by uniform regions and textures delimited by edges, comprises a step of filtering these images, a step of detecting edges in these images, a sub-step of re-assigning or no re-assigning each image pixel to an edge or a texture in accordance with the result of a connectivity test, this sub-step taking place at the end of the step of detecting edges and textures and a selection step of eliminating or applying this filtering to each image pixel according to whether this image pixel is associated or not associated with an edge or a texture.

REFERENCES:
patent: 5852475 (1998-12-01), Gupta et al.
patent: 5920356 (1999-07-01), Gupta et al.
patent: 5974197 (1999-10-01), Lee et al.
patent: 6469734 (2002-10-01), Nichani et al.

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