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<div style="" class=""><font style="" class="" face="DejaVu Sans, sans-serif"><font class="" style="font-size: 9pt" size="2">Dear
Nikos first of all,</font></font></div>
<div class="" style="background: transparent; font-variant: normal; font-style: normal"><a href="" style="" class="" name="yui_3_16_0_5_1407094526652_131"></a><a href="" style="" class="" name="yui_3_16_0_5_1407094526652_15"></a>
<font style="" class="" color="#000000"><font style="" class="" face="DejaVu Sans, sans-serif"><font class="" style="font-size: 9pt" size="2">thanks
a lot for your quick response !. I guess I will have to install
grass70. </font></font></font>
</div>
<div class="" style="background: transparent"><a href="" style="" class="" name="yui_3_16_0_5_1407094526652_132"></a><a href="" style="" class="" name="yui_3_16_0_5_1407094526652_30"></a><br style="" class="">
</div><div class="" style="background: transparent"><span class="" style="font-variant: normal"><font style="" class="" color="#000000"><font style="" class="" face="DejaVu Sans, sans-serif"><font class="" style="font-size: 9pt" size="2"><span class="" style="font-style: normal">>Rengifo
Ortega:<br style="" class="">> I have a ASTL1A image (HDF4), which I intend to use
to generate a DEM using the stereo pipeline, called AMES (NASA
software). <br style="" class=""><br style="" class="">>Note, also, the manual states clearly:<br style="" class=""><br style="" class="">
>"ASP can only pro cess Level 1B satellite imagery"<br style="" class="">
(<<a style="" class="" href="http://byss.arc.nasa.gov/stereopipeline/binaries/asp_book-2.4.1.pdf" target="_blank">http://byss.arc.nasa.gov/stereopipeline/binaries/asp_book-2.4.1.pdf</a>>,<br style="" class="">
>Chapter 4, page 37).</span></font></font></font></span></div>
<div class="" style="background: transparent"><a href="" style="" class="" name="yui_3_16_0_5_1407094526652_84"></a><a href="" style="" class="" name="yui_3_16_0_5_1407094526652_80"></a>
<br style="" class=""></div><div class="" style="background: transparent; font-variant: normal; font-style: normal"><a href="" style="" class="" name="yui_3_16_0_5_1407094526652_39"></a>
<font style="" class="" color="#000000"><font style="" class="" face="DejaVu Sans, sans-serif"><font class="" style="font-size: 9pt" size="2">Sofar
I understand Aster Level 1B imagery is just a derivative
from Aster Level 1A imagery. See link below.</font></font></font></div>
<div class="" style="background: transparent; font-variant: normal; font-style: normal"><a href="" style="" class="" name="yui_3_16_0_1_1407094526652_6198"></a>
<font style="" class="" color="#000000"><font style="" class="" face="DejaVu Sans, sans-serif"><font class="" style="font-size: 9pt" size="2">http://spatial-analyst.net/ILWIS/htm/ilwismen/import_aster_technical_information.htm</font></font></font></div><div class="" style="background: none repeat scroll 0% 0% transparent; font-variant: normal; font-style: normal; color: rgb(0, 0, 0); font-size: 9pt; font-family: DejaVu Sans,sans-serif;"><font style="" class="" color="#000000"><font style="" class="" face="DejaVu Sans, sans-serif"><font class="" style="font-size: 9pt" size="2"><br></font></font></font></div><div class="" style="background: none repeat scroll 0% 0% transparent; font-variant: normal; font-style: normal; color: rgb(0, 0, 0); font-size: 9pt; font-family: DejaVu Sans,sans-serif;"><br></div><div style="" class=""><a href="" style="" class="" name="yui_3_16_0_1_1407094526652_4881"></a><font style="" class="" face="DejaVu Sans, sans-serif"><font
class="" style="font-size: 9pt" size="2">"The
level 1A raw data are reconstructed, unprocessed instrument digital
counts. This product contains image data with geometric correction
coefficients and radiometric calibration coefficients appended but
not applied [...] "</font></font></div>
<div style="" class=""><a href="" style="" class="" name="yui_3_16_0_5_1407094526652_60"></a><br style="" class="">
</div>
<div class="" style="background: transparent; font-variant: normal; font-style: normal"><a href="" style="" class="" name="yui_3_16_0_5_1407094526652_57"></a>
<font style="" class="" color="#000000"><font style="" class="" face="DejaVu Sans, sans-serif"><font class="" style="font-size: 9pt" size="2">"The
level 1B product contains radiometrically calibrated and
geometrically coregistered data for all channels. This product is
created by applying the radiometric and geometric coefficients to the
level 1A data [...]"</font></font></font></div>
<div class="" style="background: transparent"><br style="" class="">
</div>
<div class="" style="background: transparent; font-variant: normal; font-style: normal"><a href="" style="" class="" name="yui_3_16_0_5_1407094526652_66"></a><a href="" style="" class="" name="yui_3_16_0_5_1407094526652_76"></a>
<font style="" class="" color="#000000"><font style="" class="" face="DejaVu Sans, sans-serif"><font class="" style="font-size: 9pt" size="2">So,
I thought, If I can make the radiometric correction in GRASS GIS
and eventually the geometrical correction, I would be able to use
this image in AMES as if it was a ASTL1B imagery. Please, correct me
if I am being to optimistic and understimate the work load of doing
so ...:-( </font></font></font>
</div>
<div class="" style="background: transparent; font-variant: normal; font-style: normal"><a href="" style="" class="" name="yui_3_16_0_5_1407094526652_73"></a>
<br style="" class=""><font style="" class="" color="#000000"><font style="" class="" face="DejaVu Sans, sans-serif"><font class="" style="font-size: 9pt" size="2">After
all, the information needed to do this can be found in the metadata
file (.met) attached to the ASTL1A image.</font></font></font></div><div class="" style="background: none repeat scroll 0% 0% transparent; font-variant: normal; font-style: normal; color: rgb(0, 0, 0); font-size: 9pt; font-family: DejaVu Sans,sans-serif;"><font size="2"> Greetings</font></div><div class="" style="background: none repeat scroll 0% 0% transparent; font-variant: normal; font-style: normal; color: rgb(0, 0, 0); font-size: 13px; font-family: DejaVu Sans,sans-serif;"><font size="2">Rengifo Ortega</font><br></div>
<div class="" style="background: transparent"><br style="" class=""><br style="" class="">
</div>
<div class="qtdSeparateBR"><br><br></div><div style="display: block;" class="yahoo_quoted"> <div class="" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 14pt;"> <div class="" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12pt;"> <div style="" class="" dir="ltr"> <font style="" class="" face="Arial" size="2"> Nikos Alexandris <nik@nikosalexandris.net> schrieb am 20:24 Sonntag, 3.August 2014:<br style="" class=""> </font> </div> <br style="" class=""><br style="" class=""> <div style="" class=""><br style="" class="" clear="none">Rengifo Ortega:<br style="" class="" clear="none">> I have a ASTL1A image (HDF4), which I intend to use to generate a DEM using the stereo pipeline, called AMES (NASA software). <br style="" class="" clear="none"> <br style="" class="" clear="none">Note, also, the manual states clearly:<br
style="" class="" clear="none"><br style="" class="" clear="none"> "ASP can only pro cess Level 1B satellite imagery"<br style="" class="" clear="none"> (<<a style="" class="" shape="rect" href="http://byss.arc.nasa.gov/stereopipeline/binaries/asp_book-2.4.1.pdf" target="_blank">http://byss.arc.nasa.gov/stereopipeline/binaries/asp_book-2.4.1.pdf</a>>,<br style="" class="" clear="none"> Chapter 4, page 37).<div style="" class="" id="yqtfd44221"><br style="" class="" clear="none"><br style="" class="" clear="none">Nikos</div><br style="" class=""><br style="" class=""></div> </div> </div> </div> </div></body></html>