Patent Document ID: 8174615
Application ID: 12411052
Patent Status: 1

Claim One:
1. A method for converting an image in interlaced format to progressive scan format, comprising: determining a target pixel of pixels of the image; calculating a first value based on pixel values of a first set of pixels, wherein the first set of pixels do not include pixels in a column of the target pixel, the first set of pixels including a first subset of pixels and a second subset of pixels in a row above the target pixel and a third subset of pixels and a fourth subset of pixels in a row below the target pixel, wherein the first and the third subset of pixels are situated in columns left of the target pixel and the second and the fourth subset of pixels are situated in columns right of the target pixel; determining a second value based on pixel values of a second set of pixels, wherein the second set of pixels are located in the column of the target pixel, and wherein the step of calculating the first value includes: determining differences of pixel values of respective pairs of pixels situated in a common column of the first to fourth subset of pixels, determining a first sum of the differences of the columns left from the target pixel and a second sum of differences of the columns right from the target pixel, determining a further average value of the pixels in columns at the side of the target pixel with the lower absolute value of the first sum and the second sum, and using a negative first value if the further average value is below the second value; and determining a pixel value of the target pixel based on adding the first and second values.