Patent ID: 6025886
Filing Date: 2000-02-15
Classification: H04N

Abstract:
A scene-change-point detecting method for detecting a scene change point in a moving picture which has been coded according to a moving-picture coding process of dividing said moving picture into groups of pictures each having a first picture to undergo intra-picture compression, a plurality of second pictures each to undergo forward differential-picture compression, wherein differences between each second picture and a timewise preceding encoded picture are compressed and a plurality of third pictures each to undergo forward/backward differential-picture compression wherein differences between each third picture and a timewise preceding encoded picture and a timewise succeeding encoded picture are compressed, dividing each of said pictures into blocks each having a predetermined size, and encoding each of said blocks by one of said intra-picture compression, said forward differential picture compression arid said forward/backward differential picture compression, said scene-change-point detecting method comprising the steps of:counting the number of blocks in a picture completing said differential-picture compression, counting the number of blocks in said picture completing said intra-picture compression and counting the number of blocks in said picture completing no compression; anddetecting whether a scene change point exists in said picture based on the counts.