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| GeoCommunity Mailing List |
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| Subject: | Re: [gislist] How to "light-up" a georeferenced satellite image? |
| Date: |
02/15/2006 02:55:02 PM |
| From: |
Tripp Corbin |
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The Effects Toolbar in ArcGIS will allow you to adjust brightness and
contrast with in ArcGIS without the need to alter the actual raster file
or use other software.
Tripp Corbin, MCP, GISP
Associate Vice President, GIS/Mapping
ESRI Authorized Instructor
Keck & Wood, Inc.
www.keckwood.com
(678) 417-4013
(678) 417-8785 fax
Keck & Wood now offers both Instructor led and virtual training classes
for ESRI's ArcGIS & ArcView software. Contact me for more information.
-----Original Message-----
From: gislist-bounces@lists.geocomm.com
[mailto:gislist-bounces@lists.geocomm.com] On Behalf Of Roberto Monaco
Sent: Wednesday, February 15, 2006 3:47 PM
To: gislist@lists.geocomm.com
Subject: Re: [gislist] How to "light-up" a georeferenced satellite
image?
Chris,
The image is geoTIFF? Photoshop (up to version 7 at least) ignores the
geoTIFF tags (that provide the georeference points) when reading and
later
saving the image. You could do the image adjustments using other tools,
but
if you feel more comfortable with Photoshop I can send you a program
that
restores the geoTIFF to a file. You must indicate (a) the file from
which to
read the georef information and (b) the file in which to copy the georef
information - you must keep the original file. It was developed in IDL,
and
so it needs the IDL Virtual Machine (runtime), which is free (download
from
www.rsinc.com). Let me know if you find problems, I used it only with
our
satellite data.
Regards,
Roberto
----- Original Message -----
From: "Chris Pea" <geospatial@sbcglobal.net>
To: <gislist@lists.geocomm.com>
Sent: Wednesday, February 15, 2006 2:58 PM
Subject: [gislist] How to "light-up" a georeferenced satellite image?
Hello,
How can I "light-up" a georeferenced image without
loosing the geospatial data? I have satellite image
that I intend to use as a background for a printed
map. The test print shows the image too dark. I
brought the satellite image in Adobe Photoshop and
auto-colored it. The image looks fine now and the
second print of the image itself looks good, but when
I bring the image back into the map (ESRI ArcMap) it
is no longer georeferenced. Please help! Thank you
very much!
Chris
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