Patent ID: 8253825
Filing Date: 2012-08-28
Classification: G06T

Abstract:
1. A method of processing image data, by reducing image noise, comprising the following steps: a) obtaining points of the image with respective values associated with the points, b) associating a learning zone, containing a plurality of points, with a reference point of the image, c) and assigning the reference point new values obtained by a weighted statistical estimation, of weighted mean or weighted median type using the values of the points included in the learning zone, the method characterized in that it comprises the following steps: c1) for each current point of the learning zone, valuating a distance between a window around the reference point and a window around the current point based on a resemblance between c2) and repeating step c1) for all the points of the learning zone in the guise of successive current points by using the distances obtained for all the current points to calculate the weights used in the weighted statistical estimation of step c) wherein said distance is evaluated from the relation: wherein M is an integer such that (2M+1)×(2M+1) is the size, in number of points, of the reference point window, W W