Scale processing and appropriate detection of the motion regions that are interlaced in MPEG-2 compressed video

摘要

The present invention relates to a method of the local region of the compressed video stream represented by the DCT coding blocks subject to filtering / scaling process and decoding process, to determine whether the motion area, which is interlaced or a still region and I will provide a system. The invention also relates to further information such as given, the present invention dynamically switches the smart way to and from the field type processing and frame-type process, to optimize the output image quality by this. In addition, DCT domain filtering method for field type filter / scale processing of frame DCT data is also provided.