MPEG video compositing in the compressed domain

Author

Noguchi, Yoshihiro ; Messerschmitt, David G. ; Chang, Shih-Fu

Author_Institution

LSI Lab., Asahi Chem. Ind. Co. Ltd., Kanagawa, Japan

Volume

2

fYear

1996

fDate

12-15 May 1996

Firstpage

596

Abstract

Compositing several MPEG video sources into a single displayed streams is important for advanced MPEG video applications such as advanced multimedia terminals and multi-point video conferencing. Compositing video directly in the compressed domain can reduce computational complexity by processing less data and avoiding the conversion process back and forth between the compressed and uncompressed data formats. We address the computational speedup of compositing MPEG video directly in the DCT domain, compared to the straightforward spatial domain approach. In this paper, we propose a new compositing algorithm for MPEG1 compressed video which converts compressed MPEG1 video to the DCT domain and enables video compositing in the DCT compressed domain. Typical compositing operations include overlapping, scaling, translation, filtering, etc. Simulations using picture-in-picture video compositing sequence are presented to quantify some performance factors concerned

Keywords

data compression; discrete cosine transforms; video coding; DCT domain; MPEG video compositing; MPEG1; algorithm; compressed domain; computational complexity; filtering; multi-point video conferencing; multimedia terminals; overlapping; picture-in-picture sequence; scaling; simulation; translation; Bridges; Computational complexity; Decoding; Discrete cosine transforms; Image coding; Large scale integration; Streaming media; Transform coding; Video compression; Videoconference;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1996. ISCAS '96., Connecting the World., 1996 IEEE International Symposium on

Conference_Location

Atlanta, GA

Print_ISBN

0-7803-3073-0

Type

conf

DOI

10.1109/ISCAS.1996.541795

Filename

541795