Patent ID: 7092033
Filing Date: 2006-08-15
Classification: G06T,H04N

Abstract:
1. A method for the interpolation of a pixel P(x,y) in an image that includes a plurality of pixels arrayed in matrix-like fashion, to each of which a video information value is assigned, the method comprising: selecting at least a first pixel P(x+1,y) to which a first video information value L(x+1,y) is assigned and a second pixel P(x−1,y) to which a second video information value L(x−1,y) is assigned, wherein, the pixel P(x,y) to be interpolated is located between and adjacent to the first pixel P(x+1,y) and the second pixel P(x−1,y) in an interpolation direction (IR); determining a gradient of each video information value at the first pixel and the second pixel (P(x+1,y), P(x−1,y)), each in a gradient direction (GR) that deviates from the interpolation direction (IR); and determining a video information value L(x,y) of the pixel P(x,y) to be interpolated, using the first video information value L(x+1,y) and the second video information value L(x−1,y), a greater weight being accorded to the video information value L(x+1,y); L(x−1,y) of the pixel P(x+1,y), P(x−1,y) whose associated gradient is smaller.