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) https://doi.org/10.1117/12.970060
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, C. Manikopoulos, H. Sun, H. Sun, G. Antoniou, G. Antoniou, } "Low Bit Rate Teleconferencing Video Signal Data Compression", Proc. SPIE 1199, Visual Communications and Image Processing IV, (1 November 1989); doi: 10.1117/12.970060; https://doi.org/10.1117/12.970060

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