Patent ID: 6192162
Filing Date: 2001-02-20
Classification: G06T

Abstract:
A method for edge enhancing a digital color image having color pixels wherein such colored pixels are used to provide a channel including high spatial frequency content, such method comprising the steps of:a) computing parameters for at least two orientations for each pixel in the stored digital image;b) using the computed parameters to form a classifier value for each such orientation and using such classifiers to determine the pixel classification based on such classifiers, wherein there are four classifiers each having a value associated with each pixel which are horizontal, vertical, slope 1 diagonal, and slope -1 diagonal; andc) deriving a boost value as a function of the high spatial frequency content channel according to the determined pixel classification, wherein such predetermined pixel classification is provided by comparing the horizontal and vertical classifiers to determine if they are less than a predetermined threshold and, if so, classifying the pixel as having a flat orientation, but when above such threshold, classifying according to the smallest classifier value and using such selected orientation to perform smoothing.