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Software source code and executable modules exist for the decompression of Clementine EDR images. Executable modules have been created that will execute on Sun/OS, Macintosh, and IBM/PC/DOS systems. Because the image decompression program, CLEMDCMP, requires a Discrete Cosine Transform (DCT) it may take several minutes to decompress an image on hardware platforms with slow processors. For example, in tests on a Macintosh IIci, the decompression takes approximately 4 minutes. CLEMDCMP has been tested on hardware platforms with modern processors, such as an Intel 486DX2/66-Mhz, and the decompression takes just several seconds.
The program CLEMDCMP will decompress the raw image and output the uncompressed image data in the following user-selected formats:
Simple display software tools exist to display Clementine Images for IBM/PC/DOS and Macintosh environments
CLIMDISP, a program for IBM/PC/DOS systems, is a simple image display and processing program. It can be used to display Clementine uncompressed images and histograms. Note: CLIMDISP currently can not create GIF formatted files for the Clementine images. Additionally, it can not read the version of GIF files created by the Clementine Decompression (CLEMDCMP) program which is also included on the Clementine EDR Archive CD-ROMs. If you wish to display Clementine images with CLIMDISP, generate a PDS format image file when decompressing with CLEMDCMP.
A special version of the NIH Image, a program for Macintosh systems, will display PDS decompressed Clementine images. This program is stored in a Stuffit file which is in BinHex format. This version of NIH Image was adapted specifically for Clementine images and has not been tested on other PDS labeled image formats.
Tracy Sucharski, U.S. Geological Survey, tsuchars@sirius.wr.usgs.gov - telepone: (602) 556-7396