Title :
DCT domain logo insertion of MPEG-2 transcoding
Author :
Liu, Yu ; Li, Guiling ; Tang, Qiang ; Guo, JiChang
Author_Institution :
Tianjin Univ., China
Abstract :
Video transcoding techniques offer the possibility of matching coded video to transmission channels of lower capacity. In many applications, a logo is to be inserted into the transcoded bit-stream. In this paper, a new (DCT domain) transcoding architecture is proposed to insert logo into MPEG-2 bit-stream. This paper also addressed the problems of macro block (MB) type, motion vector (MV) and quantize-step redefinition induced by logo insertion. In software simulation, the proposed approach added a good quality logo in video stream with high efficiency and little impact on video data. Though this research is focused on MPEG-2 transcoding, the result can be extended to other video compress standards such as H.263 and MPEG-4.
Keywords :
channel capacity; digital storage; discrete cosine transforms; image matching; video coding; DCT domain logo insertion; MPEG-2 transcoding; logo insertion; macro block type; motion vector; quantize-step redefinition; transcoded bit-stream; transmission channel; video code matching; Application software; Channel capacity; Computer architecture; Discrete cosine transforms; MPEG 4 Standard; Software quality; Streaming media; Transcoding; Transform coding; Video compression;
Conference_Titel :
Electrical and Computer Engineering, 2003. IEEE CCECE 2003. Canadian Conference on
Print_ISBN :
0-7803-7781-8
DOI :
10.1109/CCECE.2003.1226118
