<HTML>
<HEAD>
<TITLE>Re: [gdal-dev] looking for GeoTIFF samples with RPC metadata</TITLE>
</HEAD>
<BODY>
<FONT FACE="Calibri, Verdana, Helvetica, Arial"><SPAN STYLE='font-size:11pt'>Frank,<BR>
I was looking for a GeoTIFF file that would have internal RPC tags without relying up additional support files (.RPB and .IMD).<BR>
I was referring to<BR>
<a href="http://geotiff.maptools.org/rpc_prop.html">http://geotiff.maptools.org/rpc_prop.html</a><BR>
If the above was just a proposed extension to the GeoTIFF 1.0 specification but did not become official then no need to generate a sample.<BR>
On a separate request, with regards to the following<BR>
<a href="http://www.remotesensing.org/geotiff/spec/geotiff2.6.html#2.6">http://www.remotesensing.org/geotiff/spec/geotiff2.6.html#2.6</a><BR>
do you have any sample GeoTIFFs with the </SPAN></FONT><FONT SIZE="2"><FONT FACE="Courier, Courier New"><SPAN STYLE='font-size:10pt'>ModelTransformationTag </SPAN></FONT></FONT><FONT FACE="Calibri, Verdana, Helvetica, Arial"><SPAN STYLE='font-size:11pt'>GeoTIFF tag?<BR>
All GeoTIFFs that I have seen have the </SPAN></FONT><FONT SIZE="2"><FONT FACE="Courier, Courier New"><SPAN STYLE='font-size:10pt'>ModelTiepointTag GeoTIFF tag.<BR>
</SPAN></FONT></FONT><FONT FACE="Calibri, Verdana, Helvetica, Arial"><SPAN STYLE='font-size:11pt'>Thanks<BR>
Jared<BR>
<BR>
<BR>
On 8/7/12 6:32 PM, "Ivan Lucena" <<a href="ivan.lucena@princeton-ma.us">ivan.lucena@princeton-ma.us</a>> wrote:<BR>
<BR>
</SPAN></FONT><BLOCKQUOTE><FONT FACE="Calibri, Verdana, Helvetica, Arial"><SPAN STYLE='font-size:11pt'> <BR>
Hi Frank,<BR>
<BR>
The .RPB are perfect good example of RPC and GDAL reads it pretty well, although it is a little bit strange that gdalinfo reports the Reference System and GeoTransform matrix completely dissociated from the RPC but I think it does makes sense, since most of the applications will not process the RPC geometric transformation anyway.<BR>
<BR>
I didn't know that Jared was looking specifically for *internal* RPC tags. He just said "GeoTIFF with RPC". If the GTIFF driver could write the RPC he could "gdal_translate" (a verb) the .TIF/.RPB to a GeoTiff with *internal* RPC. Would that work? By the way, does GDAL support RPC on any other file format as auxiliary xml?<BR>
<BR>
Regards,<BR>
<BR>
Ivan <BR>
<BR>
On 8/7/12 7:10 PM, Frank Warmerdam wrote:<BR>
<BR>
<BR>
</SPAN></FONT><BLOCKQUOTE><FONT FACE="Calibri, Verdana, Helvetica, Arial"><SPAN STYLE='font-size:11pt'><BR>
<BR>
<BR>
On Tue, Aug 7, 2012 at 2:39 PM, Ivan Lucena <<a href="ivan.lucena@princeton-ma.us">ivan.lucena@princeton-ma.us</a>> wrote:<BR>
<BR>
</SPAN></FONT><BLOCKQUOTE><FONT FACE="Calibri, Verdana, Helvetica, Arial"><SPAN STYLE='font-size:11pt'> Jared,<BR>
<BR>
You can find some images with RPC from Bolder Colorado USA here:<BR>
<BR>
<a href="http://www.digitalglobe.com/product-samples">http://www.digitalglobe.com/product-samples</a><BR>
<BR>
"Quickbird: Ortho Ready Standard Satellite Imagery"<BR>
<BR>
Be aware of the license.<BR>
</SPAN></FONT></BLOCKQUOTE><FONT FACE="Calibri, Verdana, Helvetica, Arial"><SPAN STYLE='font-size:11pt'> <BR>
<BR>
<BR>
<BR>
Ivan / Jared,<BR>
<BR>
<BR>
<BR>
<BR>
I fetched the dataset and isolated the following file<BR>
<BR>
and it did not have RPCs internally:<BR>
<BR>
<BR>
<BR>
<BR>
05JUL04180116-P2AS-005554608080_01_P001.TIF<BR>
<BR>
<BR>
<BR>
<BR>
I see there is a parallel .RPB and .IMD file which GDAL<BR>
<BR>
reads for metadata but this is *not* an example of the<BR>
<BR>
RPC coefficients within the TIFF file if that is what you<BR>
<BR>
were looking for. <BR>
<BR>
<BR>
<BR>
<BR>
I'm referring to:<BR>
<BR>
<BR>
<BR>
<BR>
<a href="http://geotiff.maptools.org/rpc_prop.html">http://geotiff.maptools.org/rpc_prop.html</a><BR>
<BR>
<BR>
<BR>
<BR>
If that is what you need, let me know and I'll <BR>
<BR>
try to prepare an example if there isn't one<BR>
<BR>
already somewhere. Note that to GDAL apps<BR>
<BR>
this should look the same as working with the<BR>
<BR>
quickbird image. <BR>
<BR>
<BR>
<BR>
<BR>
Best regards,<BR>
<BR>
-- <BR>
---------------------------------------+--------------------------------------<BR>
I set the clouds in motion - turn up | Frank Warmerdam, <a href="warmerdam@pobox.com">warmerdam@pobox.com</a><BR>
light and sound - activate the windows | <a href="http://pobox.com/~warmerdam">http://pobox.com/~warmerdam</a> <<a href="http://pobox.com/%7Ewarmerdam">http://pobox.com/%7Ewarmerdam</a>> <BR>
and watch the world go round - Rush | Geospatial Software Developer<BR>
<BR>
<BR>
</SPAN></FONT></BLOCKQUOTE><FONT FACE="Calibri, Verdana, Helvetica, Arial"><SPAN STYLE='font-size:11pt'> <BR>
<BR>
</SPAN></FONT></BLOCKQUOTE>
</BODY>
</HTML>