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Proceedings Paper

Video Compression Using Sampled Data Analog Devices
Author(s): David N. Ludington
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Paper Abstract

A bandwidth compression system is described which uses charge coupled devices to achieve real time compression of standard (512 x 480) video signals. This system is composed of an encoder and a decoder. The encoder performs a two-dimensional (8 x 8) cosine transformation on the incoming video and nonlinearly quantizes the resulting coefficients to reduce the average data rate to 1 bit per pixel. Further reduction of the data rate is accomplished with a memory which inputs quantized data during one frame and outputs this data over several frames. The decoder accepts compressed data from the encoder and converts it back into video. A frame of data is first assembled in a memory and is then read out to the inverse quantizer and inverse cosine transform while a parallel memory is being loaded. The output of the transform is a video signal which, after filtering, is available for display on a standard 525-line monitor.

Paper Details

Date Published: 30 July 1982
PDF: 8 pages
Proc. SPIE 0298, Real-Time Signal Processing IV, (30 July 1982); doi: 10.1117/12.932523
Show Author Affiliations
David N. Ludington, General Electric Company (United States)


Published in SPIE Proceedings Vol. 0298:
Real-Time Signal Processing IV
Tien F. Tao, Editor(s)

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