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1 November 1989 Low Bit Rate Teleconferencing Video Signal Data Compression
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Proceedings Volume 1199, Visual Communications and Image Processing IV; (1989)
Event: 1989 Symposium on Visual Communications, Image Processing, and Intelligent Robotics Systems, 1989, Philadelphia, PA, United States
A new high compression algorithm of teleconferencing image sequence data is proposed. It is based on vector quantization (VQ) operating in the spatial domain and it is structured as a combination of an intraframe finite state (FS) algorithm with state label entropy encoding, followed by an interframe one, operating on a bundle of frames. The intraframe algorithm encodes the head frame of the bundle; the interframe algorithm follows, operating on the remaining frames. Then, the encoding process restarts with a new bundle of frames. Simulation experiments have been carried out for a videoconference image sequence, consisting of 20 frames of 112x96 pixels, with 25% average block motion. The representation vectors were of 2 x 2 x 4 resolution. The results obtained have shown that for PSNR = 32 db the required bit rate is 0.08 to 0.10 bits/pixel.
© (1989) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
C. Manikopoulos, H. Sun, and G. Antoniou "Low Bit Rate Teleconferencing Video Signal Data Compression", Proc. SPIE 1199, Visual Communications and Image Processing IV, (1 November 1989);

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