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<p>Hi,<br>
</p>
<p>since QGIS 3.36 there is an new processing algorithm
"coveragesimplify" (->
<a class="moz-txt-link-freetext" href="https://docs.qgis.org/testing/en/docs/user_manual/processing_algs/qgis/vectorcoverage.html#qgiscoveragesimplify">https://docs.qgis.org/testing/en/docs/user_manual/processing_algs/qgis/vectorcoverage.html#qgiscoveragesimplify</a>)
where no edges will cross or touch after the simplification...it
requires version of GEOS >= 3.12<br>
</p>
<p>Best regards</p>
<p>Stefan<br>
</p>
<div class="moz-cite-prefix">Am 18.03.2025 um 10:23 schrieb celati
Laurent via QGIS-User:<br>
</div>
<blockquote type="cite"
cite="mid:CAHByMH3p9G1=WtGojimTov+1b+qCBAADSgBiedQie6=ym7dpzA@mail.gmail.com">
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<div>Dear all, </div>
<div>I performed a raster segmentation from a Spot6 satellite
image with OTB. I polygonized/vectorized this raster
segmentation in order to get a vector file. To limit the
pixelation of this cover, I was thinking of smoothing the
layer with the QGIS tool. This works, but the problem is that
it generates topology/geometry issues (overlap, holes, etc.).
And I can't afford to have invalid geometries. Could you share
some advices? Guidances in order to skip those problems? I've
attached a screenshot of the smoothed vector segmentation. <br>
</div>
<div>Thanks so much. <br>
</div>
<div><img src="cid:part1.rv6LBU4a.g7ozbXTj@wheregroup.com"
alt="image.png" width="578" height="347" class=""><br>
<br>
</div>
</div>
<br>
<fieldset class="moz-mime-attachment-header"></fieldset>
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</blockquote>
<pre class="moz-signature" cols="72">--
Mit freundlichen Grüßen
Stefan Giese
Projektleiter/Consultant
---------------------------------------------
FOSSGIS Konferenz 2025 in Münster
26.-29. März 2025
<a class="moz-txt-link-freetext" href="https://www.fossgis.de/konferenz/">https://www.fossgis.de/konferenz/</a>
---------------------------------------------
WhereGroup GmbH
Schwimmbadstr. 2
79100 Freiburg
Germany
Tel.: +49 (0)761 / 519 102 - 61
Fax: +49 (0)761 / 519 102 - 11
<a class="moz-txt-link-abbreviated" href="mailto:stefan.giese@wheregroup.com">stefan.giese@wheregroup.com</a>
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Geschäftsführer:
Olaf Knopp, Peter Stamm
Amtsgericht Bonn, HRB 9885</pre>
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