Re: [vmtk-users] Level Set segmentation questions

2012-12-17 Thread Luca Antiga
Hi Carlos, you're right, I scrambled the expression for G, things are indeed the way you describe them. The bounded reciprocal would work with any > 0 epsilon added to the | grad I |, so 1 is as good as others. For citing the pipeline you can use Antiga L, Piccinelli M, Botti L, Ene-Iordache B,

Re: [vmtk-users] Level Set segmentation questions

2012-12-16 Thread Carlos Alberto Bulant
Hi Luca, Thanks for your replay, it has been very helpful. Never the less it is note clear to me, yet, the current implementations of G and P functions, you explained: "In the current implementation, G is the bounded inverse of the intensity gradient magnitude (1 / (epsilon + del G)). P is the vec

Re: [vmtk-users] Level Set segmentation questions

2012-12-12 Thread Luca Antiga
Hi Carlos, On Dec 3, 2012, at 3:12 PM, Carlos Alberto Bulant wrote: > Hello Luca, > thanks for the answers, i would like to do more questions related to the > subject. > > i would like to summarize (in the form of pseudo-code) how i understand the > level set segmentation works, and then ask y

Re: [vmtk-users] Level Set segmentation questions

2012-12-03 Thread Carlos Alberto Bulant
Hello Luca, thanks for the answers, i would like to do more questions related to the subject. i would like to summarize (in the form of pseudo-code) how i understand the level set segmentation works, and then ask you some questions // pseudo-code begin-

Re: [vmtk-users] Level Set segmentation questions

2012-12-03 Thread Luca Antiga
Hello Carlos, welcome to vmtk and sorry for the wait. I hope the timing won't stop you from sending more questions in the future. The level set code I used during my PhD was written by me, then ITK came along and I was very happy to fully embrace it :-) So right now level set implementation in

[vmtk-users] Level Set segmentation questions

2012-11-27 Thread Carlos Alberto Bulant
Hi VMTK users, this is my first post in this mailing list (probably there will be more), i'm a new user just starting to use the toolkit. Now to my questions: When using the level set segmentation filter in the form of : vmtklevelsetsegmentation -ifile image_volume_voi.vti -ofile level_sets.vti