Recce imagery compression options

Donald J. Healy

doi:10.1117/12.218609

1 September 1995 Recce imagery compression options

Donald J. Healy

Proceedings Volume 2555, Airborne Reconnaissance XIX; (1995) https://doi.org/10.1117/12.218609
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

The errors introduced into reconstructed RECCE imagery by ATARS DPCM compression are compared to those introduced by the more modern DCT-based JPEG compression algorithm. For storage applications in which uncompressed sensor data is available JPEG provides better mean-square-error performance while also providing more flexibility in the selection of compressed data rates. When ATARS DPCM compression has already been performed, lossless encoding techniques may be applied to the DPCM deltas to achieve further compression without introducing additional errors. The abilities of several lossless compression algorithms including Huffman, Lempel-Ziv, Lempel-Ziv-Welch, and Rice encoding to provide this additional compression of ATARS DPCM deltas are compared. It is shown that the amount of noise in the original imagery significantly affects these comparisons.

Citation Download Citation

Donald J. Healy "Recce imagery compression options", Proc. SPIE 2555, Airborne Reconnaissance XIX, (1 September 1995); https://doi.org/10.1117/12.218609

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