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Performance considerations for the application of the lossless browse and residual model

Author:
Kay, Robert T.
Published:
Apr 1, 1994.
Physical Description:
1 electronic document
Additional Creators:
Pieper, Ron J. and Abbott, Walter D., III
Online Version

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Summary:
A hybrid lossless compression model employing both the (lossy) JPEG DCT algorithm and one of a selection of lossless image compression methods has been tested. The hybrid model decomposes the original image into a low-loss quick-look browse and a residual image. The lossless compression methods tested in the model are Huffman, arithmetic, LZW, lossless JPEG, and diagonal coding. For both the direct and the hybrid application of these lossless methods, the compression ratios (CR's) are calculated and compared on three test images. For each lossless method tested, the hybrid model had no more than a nominal loss in compression efficiency relative to the direct approach. In many cases, the hybrid model provided a significant compression gain. When used in the hybrid model, lossless JPEG outperformed the other lossless methods over a broad range of browse image qualities.
Other Subject(s):
Collection:
NASA Technical Reports Server (NTRS) Collection.
Note:
Document ID: 19940023753.
Accession ID: 94N28256.
NASA. Goddard Space Flight Center, The 1994 Space and Earth Science Data Compression Workshop; p 43-54.
Terms of Use and Reproduction:
No Copyright.
View MARC record | catkey: 15659530