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Proceedings Paper

A 64 Kb/S Video Coding System And Its Performance
Author(s): Hideo Hashimoto; Hiroshi Watanabe; Yutaka Suzuki
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Paper Abstract

Visual communication is one of the most promising fields in business communications and is expected to be widely available in ISDN. Face-to-face communication such as videoconferencing and videophone are typical visual communication application and greatly enlarge business opportunities. Although a high bit rate is generally required for motion picture transmission, digital signal processing and LSI technologies enable us to transmit limited motion pictures in the basic ISDN economically. In this paper, a hybrid coding algorithm consisting of motion compensated interframe prediction and adaptive gain/shape vector quantization is described for efficient low bit rate video coding. Motion compensated prediction is a very powerful method for limited motion picture coding, and vector quantization is also a very effective coding scheme theoretically for redundancy reduction for video signals. These two schemes are effectively combined to attain about a one-thousand compression ratio compared with the original PCM transmission rate for video signals. Coding performances by simulation results and a implemented coding system applicable to videophone as well as videoconferencing are also described.

Paper Details

Date Published:
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Proc. SPIE 1001, Visual Communications and Image Processing '88: Third in a Series, ; doi: 10.1117/12.969035
Show Author Affiliations
Hideo Hashimoto, NTT Human Interface Laboratories (Japan)
Hiroshi Watanabe, NTT Human Interface Laboratories (Japan)
Yutaka Suzuki, NTT Human Interface Laboratories (Japan)


Published in SPIE Proceedings Vol. 1001:
Visual Communications and Image Processing '88: Third in a Series
T. Russell Hsing, Editor(s)

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