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Re: [cgal-discuss] Mesh Segmentation Trouble


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  • From: Pablo Sánchez <>
  • To:
  • Subject: Re: [cgal-discuss] Mesh Segmentation Trouble
  • Date: Fri, 26 Aug 2016 12:43:33 +0200
  • Authentication-results: mail2-smtp-roc.national.inria.fr; spf=None ; spf=Pass ; spf=None
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I read the note, yes, but I'm kind of confused as to why when I try with 0.26 lambda and 2 clusters I don't get the same result seen in the example.
It looks more like the one with 4 clusters even though I set it to 2.

Pablo Sánchez


2016-08-26 9:42 GMT+02:00 Sebastien Loriot (GeometryFactory) <>:
I got 13 segments.
Did you pay attention to the note here:
http://doc.cgal.org/latest/Surface_mesh_segmentation/index.html#Surface_mesh_segmentationSoftClustering

Sebastien.


On 08/22/2016 05:27 PM, Pablo Sánchez wrote:
I'll try that value and come back with the results.

Pablo Sánchez

2016-08-22 17:27 GMT+02:00 Sebastien Loriot (GeometryFactory)
< <mailto:>>:

    On 08/22/2016 05:23 PM, Pablo Sánchez wrote:

        Hi Sebastien,

        I tried using a modified demo in order to get the segments in
        different
        meshes. I'm having success in getting the segmented meshes but
        segmentation doesn't seem to change with any of the parameters.

        Could you specify what value of smoothing lambda you used?


    The default in the demo: 0.26

    Sebastien.


        Regards

        Pablo Sánchez

        2016-08-22 17:20 GMT+02:00 Sebastien Loriot (GeometryFactory)
        < <mailto:>
        <mailto: <mailto:>>>:



             I tried using the polyhedron demo on the elephant model,
        selecting 6
             clusters and got something that is similar to the first
        image in the
             documentation. What did you try?

             Sebastien.


             On 08/14/2016 03:20 PM, Pablo Sánchez wrote:

                 Hi,

                 Lately I've been working with CGAL's mesh segmentation
                 functionalities
                 and I'm having some problems achieving different
        segmentations
                 through
                 number_of_clusters and smoothing_lambda parameters.

                 I'm using your "elephant.off" mesh as an example, and
        as I try
                 to get
                 the results you expose in your documentation for
        Surface Mesh
                 Segmentation, I'm not able to get the same kind of
        segmentation.

                 Even though I change the values of the parameters, I
        still get
                 the same
                 segmentation in every iteration.

                 Could I get a hint of what I'm doing wrong?

                 Regards,

                 Pablo Sánchez



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