Method of spatially filtering digital image for noise...

Details Method of spatially filtering digital image for noise... Method of spatially filtering digital image for noise...

2005-08-16

2005-08-16

Au, Amelia M. (Department: 2623)

Image analysis

Image enhancement or restoration

Image filter

C382S275000

Reexamination Certificate

active

06931160

ABSTRACT:
A method of spatially filtering a digital image includes receiving a source digital image including pixels corresponding to one or more different colors; selecting a pixel of interest in the source digital image; calculating two or more noise free pixel estimates for the pixel of interest using pixel values sampled in a local region about the pixel of interest; selecting a final noise free pixel estimate for the pixel of interest from the noise free pixel estimates; and repeating for other pixels in the source digital image to provide a spatially filtered digital image.

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Lee, Digital Image Smoothing and the Sigma Filter, Computer Vision, Graphics, and Image Processing 24, 255-269, (1983).

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