| destripping satellite imagery - quest and/or problem [message #9198] |
Sat, 07 June 1997 00:00 |
gennari
Messages: 25
Registered: April 1994
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Junior Member |
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Hi all,
I have some multi channel high resolution satellite data from the
Japanese Earth Resource Satellite (JERS-1) that has horizonal
stripping every 3 lines. I.e., lines 1 + 4 + 7 + 10 ... have the same
darker conntrast when compared to lines 2 + 5 + 8 and 3 + 6 + 9.
This is a documented problem with the VNIR sensor on JERS-1.
ENVI has a
destripping routine under Utility/Preprocessing/GenPurpose called
DESTRIPE which seems to be exactly what i need, in definition at least.
However, it produced no desireable
destripping on the imagery. The number of detectors in the DESTRIPE
menu was to 3 (as it shoud be) and various other numbers with no no luck.
I even tried using
a small (400x400) single channel subimage, the original arrays are huge.
Is the DESTRIPE routine effective for vertical stripping (Landsat) and not
intended for horizontal stripping like I have?
I can remove the stripping by apply either a low pass or median but
that just smooths the images reducing the resolution as expected.
Here's a sample 200x200 JPEG of the stripping
ftp://kestrel.umd.edu/pub/wxsat/incoming/stripe.jpg
Any pointers would be greatly appreciated.
Thanks,
Scott
gennari@Hawaii.Edu
------------------------------------------------------------ ------
University of Hawaii voice (808) 956 5392
Dept. of Information & Computer Sciences fax (808) 956 9399
2565 The Mall, Keller 304A
Honolulu, HI 96822 email gennari@Hawaii.Edu
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