Image clean-up and pre-coding

Details Image clean-up and pre-coding Image clean-up and pre-coding

2005-06-14

2009-08-04

Carter, Aaron W (Department: 2624)

Image analysis

Image enhancement or restoration

Image filter

C348S606000

Reexamination Certificate

active

07570832

ABSTRACT:
A method of filtering a digital image is described. A filter kernel is applied to a respective pixel in a set of pixels to smooth noise and preserve spatial frequencies associated with image edges in the digital image in accordance with a first filtering parameter. The filter kernel is a function of the respective pixel and has a closed form for the respective pixel. The filter kernel includes contributions from a first set of neighboring pixels and has a content-dependent normalization such that a sum of elements in the filter kernel equals a substantially fixed value.

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