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| GeoCommunity Mailing List |
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| Subject: | [gislist] Aster L1A orthorectifcation question |
| Date: |
09/11/2006 08:55:00 AM |
| From: |
COLDREY, Cathy (Bristol) |
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I was hoping someone could help me with some imagery work? I have
downloaded an Aster HDF image and unwrapped it in Idrisi, used image
calculator to make a "natural" colour composite and then exported it as
a geotiff. Looking in the metadata i found the corner coordinates but I
still can seem to make the image match. Do you have any experience with
this?
The information I have found from googleing about is that Aster L1A
images are not orthorectified. Now I haven't bought a stereo pair nor a
seperate DEM (although I have also read that aster data is it's own
stero pair). Can I use the ORTHO in IDRISI to perform this task? I
have Atitude Rate and altitude angle data plus loads of other files that
unpacked when I imported the HDF-EOS file. I haven't worked with Aster
data before and I don't understand the ins and outs of it. Do you have
any idea?
Any help you could give me would be uber appreciated.
Thanks in advance
:) cathy
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