Patent ID: 7463771
Filing Date: 2008-12-09
Classification: G06K

Abstract:
1. An analysis method comprising a Phase I and a Phase II image processing, wherein the phase I processing producing a histogram of a noisy image; according to the histogram, automatically generating a fuzzy partitions represented by LR fuzzy sets and parameters of the fuzzy sets' membership functions; wherein the parameters are left spread α, mean m, and right spread β such that the fuzzy partitions are represented by LR fuzzy sets (α, m, β) with these automatically generated fuzzy sets and their membership functions, using fuzzy inference as noise filter and producing the Phase I filtered and thresholded images; the Phase II processing scaning the resultant images of Phase I by sample windows and comparing the centered pixel with surrounding pixels in a sample window of the thresholded image to determine whether the center pixel is a part of a corrupted spot; in a sample window, the non-corrupted pixels being used for filling the center pixel that is corrupted; the Phase II analysis again applying the same thresholding algorithm in Phase I to obtained the Phase II thresholded image; wherein the Phase II thresholded image is used to perform the edge detection analysis.