Patent ID: 8200022
Filing Date: 2012-06-12
Classification: G06K,G06T

Abstract:
1. A method for operating a computer system for edge detection, comprising: receiving an image comprising a plurality of pixels; determining a phase congruency value for a pixel wherein the phase congruency value comprises a ratio of a first phase congruency component to a second phase congruency component; determining if the phase congruency value satisfies a first criteria; if the phase congruency value satisfies the first criteria, categorizing the pixel as an edge pixel; if the phase congruency value does not satisfy the first criteria, determining if the first phase congruency component satisfies a second criteria different from the first criteria; if the first phase congruency component satisfies the second criteria, categorizing the pixel as an edge pixel; and if the first phase congruency component does not satisfy the second criteria, categorizing the pixel as a non-edge pixel.