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    <div class="moz-cite-prefix">On 17/11/2016 08:47, Aslam Parker
      wrote:<br>
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    <blockquote
      cite="mid:2DE4B8AA057E64468F2C2A4DAC90078D5A166DC8@MBX44.GMS.local"
      type="cite">
      <pre wrap="">We are looking into software that is specifically suited for orthorectification of historical imagery using DEM and patch rectification.</pre>
    </blockquote>
    Have you considered SfM (structure from motion) for the historical
    imagery? <br>
    <br>
    FOSS: <a class="moz-txt-link-freetext" href="https://opendronemap.github.io/">https://opendronemap.github.io/</a><br>
    Proprietary: Pix4D, AgiSoft<br>
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      <div style="text-align:center">Gavin Fleming - Joint MD - PrGISc
        [PGP1234]</div>
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