Patent ID: 7843509
Filing Date: 2010-11-30
Classification: G06T,H04N

Abstract:
1. An iterative interpolation method for determining an interpolated image information value in an image which comprises a number of image regions arranged in a matrix-like fashion having original image regions to which one image information value has been assigned, and having at least one image region to be interpolated, comprising the steps of: a) specifying a starting interpolation direction; b) determining a first quality measure for the starting interpolation direction, which first quality measure is a function of the image information values of at least one group of image regions that are located adjacent to each other in the starting interpolation direction and that are adjacent to the first image region to be interpolated; c) selecting at least one image direction different from the starting interpolation direction and determining a second quality measure for this at least one image direction, which second quality measure is a function of image information values from at least one group of image regions that are located adjacent to each other in this image direction, and that are located adjacent to the image region to be interpolated; d) comparing the first and second quality measures, selecting as the interpolation direction the starting interpolation direction, or the at least one image direction, as a function of the comparison result, and determining an interpolated image information value using image regions that are located adjacent to the to-be-interpolated image region in the interpolation direction or in a filtered interpolation direction obtained by filtering the interpolation direction; e) repeating method steps c) and d) at least once, wherein during the repeated implementation of method step c) the interpolation direction and quality measure of this interpolation direction from the previous method step d) is employed as the starting interpolation direction and as the quality measure of the starting interpolation direction.