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Performance considerations for the application of the lossless browse and residual model
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Pieper, Ron J. Kay, Robert T. Abbott II, Walter D. |
| Copyright Year | 1994 |
| Description | 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. |
| File Size | 744718 |
| Page Count | 12 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19940023753 |
| Archival Resource Key | ark:/13960/t9770dh4g |
| Language | English |
| Publisher Date | 1994-04-01 |
| Access Restriction | Open |
| Subject Keyword | Computer Programming And Software Compression Ratio Algorithms Image Processing Data Compression Lossless Equipment Mathematical Models Image Reconstruction Astronomical Photography Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
