I've been trying to smooth a huge polygon, that is result of a segmentation export. I'd like to know what's the best parameters to use Chaiken Method to get smooth curved boundaries on QGIS 2.14.

I already tried v.generalize enter image description here

The best result I got so far is this: enter image description here

And what I really need is something like this: enter image description here

I made this red line on adobe illustrator as example. So, how can I get this result on QGIS 2.14?


Try simplifying your polygon before running the smooth operation. Polygons with many nodes don't respond well to the Chaiken algorithm.

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  • It worked, ndawson! Nice tip. – eduardosteps Apr 2 '16 at 3:00
  • @Edu - Don't forget to accept ndawson's answer if it worked for you by clicking the green-faded tick on the left hand side =) – Joseph Apr 4 '16 at 10:06
  • 1
    Okay, @Joseph - I'll do that right now. – eduardosteps Apr 4 '16 at 13:22

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