Video picture correction value production method

摘要

The method involves computing a set of two temporal or final values (K,L,M). One of the values is valid for a video line of a first field and the second value is valid for the corresponding video line of a second field. For the correction the value is selected which is valid for the current video line of the current field. Preferably, the final value presents the correction value for the respective video line. The correction values are at least partly computed using interpolation between correction local values (W0-W12) which are latticed over the screen of an video projecting apparatus.