Patent ID: 7315331

Claim:
A method for motion-vector-based conversion of a first video signal having a first image sequence at a first frequency to a second video signal having a second image sequence at a second frequency, the method comprising the steps of: interpolating at least one intermediate image that is part of the second image sequence, where the interpolated intermediate image lies temporally between first and second images in the first image sequence, where the at least one intermediate image lies at a first temporal distance from the first image in the first image sequence and lies at a second temporal distance from the second image in the first image sequence, where the first and second temporal distances define an interpolation phase, where for a pixel of the interpolated image in the second image sequence a plurality of pixels at least from each of the first and second images of the first image sequence are median filtered; and adaptively weighting the median filter as a function of a first projection factor that comprises a normalized temporal distance for a period of time between the first image of the first image sequence and the intermediate image and as a function of a second projection factor that comprises a normalized temporal distance for a period of time between the intermediate image and the second image of the first image sequence.