<div dir="ltr">Hi Martin<div><br></div><div>We did similar work to correct the geometry shift of time series of AVHRR data. Entire workflow was developed in GRASS GIS except for the homologous point extraction, for which we used SIFT algorithm implemented in Orfeo Toolbox.</div><div><br></div><div>You can find the details in this paper [1] including the scripts.</div><div><br></div><div>[1] <a href="http://www.mdpi.com/2072-4292/8/3/169/htm">http://www.mdpi.com/2072-4292/8/3/169/htm</a></div><div><br></div><div>regards</div><div><br></div><div>Sajid</div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sun, Dec 3, 2017 at 7:36 PM, Martin Landa <span dir="ltr"><<a href="mailto:landa.martin@gmail.com" target="_blank">landa.martin@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi,<br>
<br>
one colleague of mine was asking me about possibilities in GRASS how<br>
to validate geometry shift in imagery data similar to [1]. I would<br>
appreciate any tips where to start, thanks! Martin<br>
<br>
[1] <a href="https://geoacca.enveo.at/about/" rel="noreferrer" target="_blank">https://geoacca.enveo.at/<wbr>about/</a><br>
<span class="HOEnZb"><font color="#888888"><br>
--<br>
Martin Landa<br>
<a href="http://geo.fsv.cvut.cz/gwiki/Landa" rel="noreferrer" target="_blank">http://geo.fsv.cvut.cz/gwiki/<wbr>Landa</a><br>
<a href="http://gismentors.cz/mentors/landa" rel="noreferrer" target="_blank">http://gismentors.cz/mentors/<wbr>landa</a><br>
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