An Efficient Caption Insertion Scheme for MPEG Video in MC-DCT Compressed Domain

摘要

The (cinema) caption processing that adds de- scriptive text on a sequence of frames is an important video ma- nipulation function that a video editor should support. This pa- per proposes an efficient MC-DCT compressed domain approach to insert the caption into the MPEG compressed video stream. It basically adds the DCT blocks of the caption image to the Corresponding DCT blocks of the input frames one by one in the MC-DCT domain as in [6].