Patent ID: 6724945
Filing Date: 2004-04-20
Classification: G06T,H04N

Abstract:
A method of correcting one or more defect pixels in a source image formed from a plurality of pixels each having a respective value, comprising:(a) in response to a determination that curvature information is complete, replacing a defect pixel with a value computed from pixel values located near the defect pixel along a direction selected based upon a comparison of curvature values computed along multiple different directions; (b) in response to a determination that curvature information is incomplete and gradient information is complete, replacing the defect pixel with a value computed from values of pixels positioned near the defect pixel along a direction selected based upon a comparison of gradient values computed along multiple different directions; and (c) in response to a determination that curvature information and gradient information are incomplete, replacing the defect pixel with an average of values of non-defect pixels neighboring the defect pixel.