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| Subject: | Re: [gislist] orthorectification and terrain correction |
| Date: |
01/25/2006 08:15:01 AM |
| From: |
Tripp Corbin |
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Yes Orthorectification means that an image is corrected in a 3D (X,Y,
and Z)environment. Otherwise it is a Plane Rectification which is only
2D (X and Y). The quality of the rectification will depend on many
factors though including the scale control used, experience of person
conducting the rectification, number of control points used, and others.
In relatively flat terrain, I have seen Plane rectified aerials be as
accurate as orthos created using the USGS DEMs.
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.
Currently scheduled Instructor led classes:
Introduction to ArcGIS I - January 16-17 at Keck & Wood Corporate Office
in Duluth, Ga.
Introduction to ArcGIS II - January 18-20 at Keck & Wood Corporate
Office in Duluth, Ga.
-----Original Message-----
From: gislist-bounces@lists.geocomm.com
[mailto:gislist-bounces@lists.geocomm.com] On Behalf Of humberto Perotto
Sent: Wednesday, January 25, 2006 9:03 AM
To: gislist@lists.thinkburst.com
Subject: [gislist] orthorectification and terrain correction
Hello everyone,
I have a doubt and some help would be greatly appreciated. If an image
is ortho-rectified in mountainous terrain, can I assume that they are
terrain corrected? Does ortho-rectification include terrain correction?
I would really appreciate your comments, ideas and some readings to
clarify my doubt.
Thank you very much.
Best Regards
Humberto
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