Caption Processing for MPEG Video in MC-DCT Compressed Domain

摘要

The (cinema) caption processing that adds descriptive texts on the sequence of rrames is an improtant video manipulation function that video editor should support. This paper 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 MC-DCT domain as in (5).