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Proceedings Paper

Block Transform Image Coding In The Presence Of Channel Errorst
Author(s): J. W. Modestino; D. G. Daut
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Paper Abstract

The use of two-dimensional (2-D) block transform image coding using the discrete cosine transform (DCT) is considered in the presence of channel errors. This technique has proven an efficient and readily implementable source coding technique in the absence of channel errors. In the presence of channel errors, however, the performance degrades rapidly requiring some form of error-control protection if reasonable quality image reconstruction is to be achieved. Unfortunately, channel coding can be extremely wasteful of channel band-width if not applied judiciously. This paper describes an approach which provides a rationale for combined source-channel coding which results in improved quality image reconstruction without sacrificing transmission bandwidth. This approach is shown to result in a relatively robust design which is reasonably insensitive to channel errors and yet provides performance approaching theoretical performance limits.

Paper Details

Date Published: 11 November 1980
PDF: 11 pages
Proc. SPIE 0249, Advances in Image Transmission II, (11 November 1980); doi: 10.1117/12.959415
Show Author Affiliations
J. W. Modestino, Rensselaer Polytechnic Institute (United States)
D. G. Daut, Rensselaer Polytechnic Institute (United States)

Published in SPIE Proceedings Vol. 0249:
Advances in Image Transmission II
Andrew G. Tescher, Editor(s)

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