Use of forward error correction to maintain image fidelity

H. Garton Lewis Jr.

doi:10.1117/12.150945

27 August 1993 Use of forward error correction to maintain image fidelity

H. Garton Lewis Jr.

Proceedings Volume 1961, Visual Information Processing II; (1993) https://doi.org/10.1117/12.150945
Event: Optical Engineering and Photonics in Aerospace Sensing, 1993, Orlando, FL, United States

Abstract

The last decade has seen extensive research in the area of image compression (source coding). Of equal importance is the forward error correction (channel coding) required to maintain the fidelity of reconstructed images when they are transmitted through a noisy communications channel. This paper presents a design methodology based on end-to-end analysis of the communication channel from the sensor to the display monitor to develop the appropriate bit error model for the communications channel. Channels containing all white Gaussian and/or burst errors are addressed. These channels include rf data links, satellite relay links, digital tape recorders, and optical recording systems. An overview of the forward error correction codes required for error correction of these channels is also presented. The codes that are discussed include 1/2 rate convolutional, Reed-Solomon, concatenated 1/2 rate convolutional and Reed-Solomon, and 2-dimensional Reed-Solomon product codes. Extending the error correction capability of these codes through both block and helical interleaving is addressed.

Citation Download Citation

H. Garton Lewis Jr. "Use of forward error correction to maintain image fidelity", Proc. SPIE 1961, Visual Information Processing II, (27 August 1993); https://doi.org/10.1117/12.150945

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