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| GeoCommunity Mailing List |
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| Mailing List Archives |
| Subject: | RE: GISList: Conversion of NOAA AVHRR Satellite Imagery |
| Date: |
03/06/2002 05:07:02 PM |
| From: |
Dimitri Rotow |
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> Can anybody put me onto a utility that allows the conversion of NOAA AVHRR
> files (.txt format: satellite imagery) into other image formats such as
> .tiff or .jpeg files. We are looking to put these images into a usable
> georeferenced ArcView 3.2 project. Thank you in advance.
>
Use Manifold 5.00. See
http://www.manifold.net/products/mfd50pro/mfd50pro_home.html for a
screenshot using AVHRR imagery (the particular example has been processed
with Manifold's band recombination tools into a false color image).
Manifold has fabulous georeferencing capability, extensive image
manipulation and even lets you transfer selections between vector layers and
image layers. So, if you don't need the entire AVHRR image you could
select, say, just a particular state and cookie-cut the AVHRR image into a
smaller image that's cut out exactly to the state boundaries.
See, for example,
http://www.manifold.net/images/gallery/afghanistan_latlon.png
and
http://www.manifold.net/images/gallery/afghanistan_ortho.png
for examples of this "cookie cutting" technique. You could then save the
smaller image as a GeoTIFF and use it in ArcView. Manifold is not free, but
at $245 it does have the ability to read about 80 different vector, image,
surface/DEM and database formats so you could use this technique to harvest
data from lots of sources for use in ArcView.
Cheers,
Dimitri
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