Patent ID: 7391476
Filing Date: 2008-06-24
Classification: G06T,H04N

Abstract:
1. A method of interpolating a pixel of an interline of a first field in a sequence of interlaced fields, the method comprising the steps of: selecting at least one first pixel, with which a first image information value is associated, from a scan line lying adjacent to the interline, and at least one second pixel, with which a second image information value is associated, from a second scan line lying adjacent to the interline; providing a third image information value which is dependent on an image information value of at least one third pixel from a second field temporally preceding or following the first field, an image of this second field corresponding to an image position of the pixel to be interpolated, providing a fourth image information value which is dependent on an image information value of at least one fourth pixel which lies vertically adjacent to the third pixel, and providing a fifth image information value which is dependent on an image information value of at least one fifth pixel which lies vertically adjacent to the third pixel; generating a first filter value by low-pass filtering the at least one first and second image information values; determining a width of an interval established by the first and second image information values; generating a second filter value by high-pass filtering the third, fourth, and fifth image information values; generating an image information value for the interpolated pixel as a sum of the first filter value and the second filter value when the absolute value of the second filter value is smaller than half the interval width; and generating an image information value for the interpolated pixel such that the image information value lies within the interval width when the second filter value is greater than half the interval width.