CGAL users discussion list

[Sukhraj Singh <>]

Hello,

"Triangulated Surface Mesh Segmentation" uses SDF values to do the segmentation of a surface mesh.

I wanted to used the SDF values for matching. As described in

http://research.microsoft.com/en-us/um/people/rgal/publications/papers/pose_oblivious.pdf. This paper introduced the idea of SDF.

The CGAL implementation of SDF values digresses somewhat from what is mentioned in the above research article.

One of the digression is that an SDF value is calculated at the center of a "face"  instead of at a "vertex" . That is okay.

But to calculate the signatures the SDF value is multiplied by a weight which is influence of that vertex. Where influence is the (area of all the faces connected to that vertex)/(total mesh surface area). Later a 64 bin Histogram is created form these weighted values.

My question is,since in CGAL implementation "SDF" is calculated at the Face center what would be the best way to calculate the weights/influence in such a case.

Thanks to comment.