A method of measuring the motion in video image data for a pixel which uses both field-difference and frame-difference motion values to generate a motion value having increased accuracy. Image data (806) from the same pixel in a prior row of the same field (906) is compared to image data (808) from the...http://www.google.es/patents/US6104755?utm_source=gb-gplus-sharePatente US6104755 - Motion detection using field-difference measurements
Motion detection using field-difference measurements