Title :
Transcoder architectures for video coding
Author :
Björk, Niklas ; Christopoulos, Charilaos
Author_Institution :
Ericsson Telecom AB, Stockholm, Sweden
Abstract :
Two different models for transcoding of H.263-based video streams are examined: rate reduction and resolution reduction. Results show that the computational complexity of the basic transcoding model can be reduced for each model by an average of 39% and 23% with less than 1 dB loss in quality for sequences with high motion. Comparisons with scalable video coding model are also presented
Keywords :
computational complexity; decoding; discrete cosine transforms; image resolution; image sequences; inverse problems; transform coding; variable length codes; video coding; DCT; H.263-based video streams; IDCT; computational complexity reduction; high motion; image sequences; inverse discrete cosine transform; rate reduction; resolution reduction; scalable video coding model; transcoder architectures; transcoding model; variable length decoder; Bit rate; Computational complexity; Decoding; Discrete cosine transforms; Quantization; Streaming media; Transcoding; Transmitters; Video coding; Videoconference;
Conference_Titel :
Acoustics, Speech and Signal Processing, 1998. Proceedings of the 1998 IEEE International Conference on
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-4428-6
DOI :
10.1109/ICASSP.1998.678108
