16 April 1973 Application Of Data Compression Techniques To Spacecraft Imaging Systems
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Abstract
Spacecraft imaging systems produce amounts of data which can easily exceed the down-link channel capacity. This paper demonstrates data compression methods which reduce significantly the communication requirements with minimum loss of information in the received imagery. Differential PCM data compression takes advantage of the lower entropy of the scene-invariant brightness difference signal. Entropy coding of the compressor output provides maximum signal-to-noise ratio per channel bit. Two-bit-per-sample imagery is shown to be equivalent to 6-bit PCM. Reconstruction error and subjective evaluation of actual images are used to measure compression performance.
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Christopher Allen, Christopher Allen, } "Application Of Data Compression Techniques To Spacecraft Imaging Systems", Proc. SPIE 0032, Developments in Electronic Imaging Techniques II, (16 April 1973); doi: 10.1117/12.953609; https://doi.org/10.1117/12.953609
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