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<p class=MsoNormal><font size=2 color=navy face=Arial><span DEFANGED_STYLE='font-size:
11.0pt;font-family:Arial;color:navy'>Hi,</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span DEFANGED_STYLE='font-size:
11.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span DEFANGED_STYLE='font-size:
11.0pt;font-family:Arial;color:navy'>I had posted a message regarding matrix
inversion errors encountered when using photo.2target in i.ortho.photo a couple
weeks ago, with no response. I was wondering if anyone could help me with this
problem, as the project I am working on centers on being able to orthorectify
aerial photographs as a part of a coastline erosion analysis program I'm
a part of.</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span DEFANGED_STYLE='font-size:
11.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span DEFANGED_STYLE='font-size:
11.0pt;font-family:Arial;color:navy'>I am able to get 6/7ths of the way through
i.ortho.photo, with the matrix inversion error being encountered during the
photo.2target phase of the rectification. I've tried running photo.init,
as the manual page suggests, but this doesn't make any difference, the matrix
inversion error always repeats itself. Even if I create a brand new imagery
group, and re-start the whole process from scratch, I still encounter the
inversion error problem. </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span DEFANGED_STYLE='font-size:
11.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span DEFANGED_STYLE='font-size:
11.0pt;font-family:Arial;color:navy'>Is there any workaround for this problem?
I really need to be able to create a true orthophoto from GRASS, as the rms
errors I get when rectifying in ArcView 8.3 are too high for my analysis!</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span DEFANGED_STYLE='font-size:
11.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span DEFANGED_STYLE='font-size:
11.0pt;font-family:Arial;color:navy'>Any help would be greatly appreciated!!</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span DEFANGED_STYLE='font-size:
11.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span DEFANGED_STYLE='font-size:
11.0pt;font-family:Arial;color:navy'>Thanks,</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span DEFANGED_STYLE='font-size:
11.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span DEFANGED_STYLE='font-size:
11.0pt;font-family:Arial;color:navy'>Eric</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span DEFANGED_STYLE='font-size:
11.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span DEFANGED_STYLE='font-size:
10.0pt;font-family:Arial;color:navy'>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</span></font></p>
<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
style='font-size:12.0pt;color:navy'> </span></font></p>
<p class=MsoNormal><strong><b><font size=3 color=navy face=Arial><span
style='font-size:12.0pt;font-family:Arial;color:navy'>Eric Patton</span></font></b></strong></p>
<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
style='font-size:12.0pt;color:navy'> </span></font></p>
<p class=MsoNormal><em><i><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:navy'>Technologist, Geo-Spatial
Data Services</span></font></i></em></p>
<p class=MsoNormal><em><i><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:navy'>Geological Survey of </span></font></i></em><em><i><font
size=2 color=navy face=Arial><span DEFANGED_STYLE='font-size:10.0pt;font-family:Arial;
color:navy'>Canada</span></font></i></em><em><i><font size=2 color=navy
face=Arial><span DEFANGED_STYLE='font-size:10.0pt;font-family:Arial;color:navy'> (</span></font></i></em><em><i><font
size=2 color=navy face=Arial><span DEFANGED_STYLE='font-size:10.0pt;font-family:Arial;
color:navy'>Atlantic</span></font></i></em><em><i><font size=2 color=navy
face=Arial><span DEFANGED_STYLE='font-size:10.0pt;font-family:Arial;color:navy'>)</span></font></i></em></p>
<p class=MsoNormal><em><i><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:navy'>Natural Resources </span></font></i></em><em><i><font
size=2 color=navy face=Arial><span DEFANGED_STYLE='font-size:10.0pt;font-family:Arial;
color:navy'>Canada</span></font></i></em></p>
<p class=MsoNormal><em><i><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:navy'>Bedford Institute of
Oceanography</span></font></i></em></p>
<p class=MsoNormal><em><i><font size=2 color=navy face=Arial><span
DEFANGED_STYLE='font-size:10.0pt;font-family:Arial;color:navy'>Dartmouth</span></font></i></em><em><i><font
size=2 color=navy face=Arial><span DEFANGED_STYLE='font-size:10.0pt;font-family:Arial;
color:navy'>, </span></font></i></em><em><i><font size=2 color=navy
face=Arial><span DEFANGED_STYLE='font-size:10.0pt;font-family:Arial;color:navy'>Nova
Scotia</span></font></i></em><em><i><font size=2 color=navy face=Arial><span
DEFANGED_STYLE='font-size:10.0pt;font-family:Arial;color:navy'>, </span></font></i></em><em><i><font
size=2 color=navy face=Arial><span DEFANGED_STYLE='font-size:10.0pt;font-family:Arial;
color:navy'>Canada</span></font></i></em><em><i><font size=2 color=navy
face=Arial><span DEFANGED_STYLE='font-size:10.0pt;font-family:Arial;color:navy'> </span></font></i></em><em><i><font
size=2 color=navy face=Arial><span DEFANGED_STYLE='font-size:10.0pt;font-family:Arial;
color:navy'>B2Y 4A2</span></font></i></em></p>
<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
style='font-size:12.0pt;color:navy'> </span></font></p>
<p class=MsoNormal><em><i><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:navy'>Postal address: </span></font></i></em><em><i><font
size=2 color=navy face=Arial><span DEFANGED_STYLE='font-size:10.0pt;font-family:Arial;
color:navy'>P.O. Box</span></font></i></em><em><i><font size=2 color=navy
face=Arial><span DEFANGED_STYLE='font-size:10.0pt;font-family:Arial;color:navy'> 1006</span></font></i></em></p>
<p class=MsoNormal><em><i><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:navy'>Courier address: </span></font></i></em><em><i><font
size=2 color=navy face=Arial><span DEFANGED_STYLE='font-size:10.0pt;font-family:Arial;
color:navy'>1 Challenger Drive</span></font></i></em></p>
<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
style='font-size:12.0pt;color:navy'> </span></font></p>
<p class=MsoNormal><em><i><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:navy'>Telephone: (902)426-7732</span></font></i></em></p>
<p class=MsoNormal><em><i><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:navy'>Facsimile: (902)426-4104</span></font></i></em></p>
<p class=MsoNormal><em><i><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:navy'>E-mail:
</span></font></i></em><font color=navy><span DEFANGED_STYLE='color:navy'><a
href="mailto:epatton@NRCan.gc.ca"><em><i><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial;text-decoration:none'>epatton@NRCan.gc.ca</span></font></i></em></a></span></font></p>
<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
style='font-size:12.0pt;color:navy'> </span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span DEFANGED_STYLE='font-size:
12.0pt'> </span></font></p>
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