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<p class="MsoNormal">I have a NITF file which I can read fine with GDAL. The issue that it is a chip and using the transformation to determine geolocations fails (for example finding the chip’s four corners). Instead of placing a point based on the chip,
it places it based on the whole image. I can read the metadata and see that the RPC metadata contains the chip offset:<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">RPC Metadata:<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> LINE_OFF=3276<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> LINE_SCALE=3276<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> SAMP_OFF=2538<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> SAMP_SCALE=2538<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> LONG_OFF=-106.8927<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> LONG_SCALE=0.0542<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> LAT_OFF=32.3084<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> LAT_SCALE=0.0593<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> HEIGHT_OFF=1229<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> HEIGHT_SCALE=1214<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I am tempted to use the LINE_OFF and SAMP_OFF to make the adjustments to properly get the boundary. I believe this is only a partial solution (not generic enough) and will just give further problems as I get other NITF chips. Would someone
help me with the proper way of handling the chip transformation?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thank you,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Anthony<o:p></o:p></p>
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