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Optical Engineering

Technical Issues In Low Rate Transform Coding
Author(s): Hamed Amor; Dietmar Biere; Andrew G Tescher
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Paper Abstract

The transmission of video information through a narrowband channel requires a significant degree of image compression. In addition to the actual coding procedure, the frame rate is reduced, the spatial sample rate is lowered, and the color components are further filtered. Through a review of a practical and flexible image compression configuration, the important technical aspects of video coding are presented. The complexity of the currently developed system is discussed for operation over a 64 kbit/s communication channel. The specific and primary considerations include the following: After a reduction of temporal and spatial resolution, the luminance and color difference signals are divided in pixel blocks of 16 x 16 and 8 x 8, respectively. Then they are passed on to a motion-compensated differential pulse-code modulation coding system with a subsequent discrete cosine transform of the prediction error. The appropriate quantization in performed by means of several Huffman tables.

Paper Details

Date Published: 1 July 1989
PDF: 8 pages
Opt. Eng. 28(7) 287700 doi: 10.1117/12.7977026
Published in: Optical Engineering Volume 28, Issue 7
Show Author Affiliations
Hamed Amor, Robert Bosch GmbH (Germany)
Dietmar Biere, Robert Bosch GmbH (Germany)
Andrew G Tescher, Lockheed Missiles and Space Company, Inc. (United States)

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