Patent ID: 8983206
Filing Date: 2015-03-17
Classification: G06T,H04N

Abstract:
1. A method of computing a measure of quality for a distorted image Y, the measure characterizing a similarity between the image Y and an undistorted reference image X having the same number of rows and columns of pixels as the image Y, the method comprising: employing at least one processor for: (a) transforming the distorted image Y and the undistorted reference image X by a transformation process to generate a transform of the distorted image Y and a transform of the undistorted reference image X respectively, the transformation process having a blindness property of not containing all information regarding an image to be transformed in a transform of the image, thus resulting in certain pixel patterns of the image leading to zero transform coefficients not to be recognized during the transformation process; (b) spatially shifting pixels in the reference image X and the distorted image Y by a spatial shift, having the same predefined amount of pixels, to generate a spatially shifted version X (c) transforming the spatially shifted version Y (d) determining the measure of quality for the distorted image Y as a function of the transform of the distorted image Y, the transform of the undistorted reference image X, the transform of the spatially shifted version Y