Patent Document ID: 20080192142
Application ID: 11911572
Patent Status: 0

Claim One:
1. Image processing apparatus in which pixels of an output image are generated from groups of one or more pixels of an input image, the groups being selected in accordance with an image feature direction in the input image, the apparatus comprising: an interpolator for interpolating intermediate pixels between pixels of the input image; and a block comparator for detecting correlation between sets of test blocks of pixels in the input image, the sets of test blocks being oriented with respect to a current pixel position so that the orientation of a set having the greatest correlation indicates a probable image feature direction applicable to the current pixel position; in which: for at least some sets of test blocks which have an orientation with respect to the current pixel position within a predetermined range around a vertical orientation, the test blocks include pixels of the input image and intermediate pixels interpolated from pixels of the input image; and for other sets of test blocks, the test blocks include only pixels of the input image.