Isis 2 Documentation
M9FILT - Mariner 9 Filtering PROGRAMMER: MARS1::KEH (Ken Herkenhoff, Caltech) This procedure finds and removes reseaux, corrects missing lines (if necessary), and filters out bit errors in Mariner 9 television imaging data. If the default for NLINES is not changed, missing line correction will not occur. Intermediate results of each step are saved on disk in case of errors until successful creation of the filtered image (FROM + X.cub). The following programs are run in this procedure: FINDRX, M9MLRP, BEF, REMRX.
Parm | Description | Default |
---|---|---|
FROM | Mariner 9 image file (do not include extension, .cub is assumed) | NONE |
PICNO | 6 digit picture number | -- |
ADD25 | Add 25 lines to beginning of image? | YES |
TOL | For noise filter (DN) |
ADDITIONAL NOTES:
Parm | Description |
---|---|
FROM | The Mariner 9 input image file must be 8-bit and level 0. Do NOT include the extension with the filename. The program will assume .cub as the filename extension. |
ADD25 | Determines if 25 lines of NULLs will be added to the top of the FROM image before processing. The Mariner 9 images distributed by PDS are missing the first 25 lines of data. The 25 lines need to be added in order for the reseau and calibration files to correspond to the correct location in the image file. |
PICNO | The picture number of the image, in the following format: rrrcxx, where rrr is the orbit number (examples: 123 or 012); c is the camera (A or B), and xx is the frame number (examples: 01 or 33). Only provide this number if the picture number on the labels is incorrect. |
TOL | The tolerance for the filter in DN. No filtering will occur if adjacent pixel values differ by less than TOL. The default tolerance of 14 will preserve real data contrasts in most planetary images. Larger tolerances should be used for limb or satellite images. |
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