[Insight-users] Re: ITK Level Set Questions

[Luis Ibanez]

Hi German,


1) The ITK PDE solver is using a finite differences approach.
    This is relatively common, so you probably want to look at
    books on numerical methods, rather than to specific papers.


2) The Level Set framework in ITK is not yet suitable for
    being applied to Vector images. There are two possible
    variations that are worth considering here.

    2.1) When the image to be segmented is a Vector image

    2.2) When the Level Set itself is a Vector image

    Both cases are interesting, as well as their combination.
    The option (2.1) may not be too hard to implement, since
    it probably requires only to clarify some typedefs in the
    level set filters.  The option (2.2) is a bit more involved.
    These methods are also known as "multi-phase level sets".


Please let us know if you have other questions,


     Thanks


        Luis



---------------------------
German Eichberger wrote:
> Hi Luis,
> 
> I am new to level sets and found your name on the mailing list.  I  was 
> wondering if you could help me with two simple questions:
> 
> 1) What numerical method is ITK using in their PDE solver? Is there a  
> paper I can read?
> 2) I am planning to use vector value level set segmentations. In  
> particular I would like to have texture information and gradient  
> information together. Does  phi in the ITK level set equation work on  
> vector values. if so is there an example I can have a look at?
> 
> Thanks a lot for your help and time,
> German
>