[vtkusers] Wrong ICP result : the volumes are opposed

[Nour Mestiri]

Thank you David.
In fact, that's my problem, i'm lost and i don't know what to do to spin one of the volumes i have.
I really need help to resolve that ambiguous situation.

--- En date de : Mer 25.3.09, David Doria <daviddoria at gmail.com> a écrit :


De: David Doria <daviddoria at gmail.com>
Objet: Re: [vtkusers] Wrong ICP result : the volumes are opposed
À: 
Cc: "vtk" <vtkusers at vtk.org>
Date: Mercredi 25 Mars 2009, 13h03


ICP only guarantees a local optimum, that is, if you start in a very bad initial relative pose, you will not find the "correct" (ie. global) solution you are looking for. You need to use another technique (ie. spin images) to initialize the ICP.

Thanks,

David



On Wed, Mar 25, 2009 at 9:00 AM, Nour Mestiri <nourmestiri at yahoo.fr> wrote:






Hi all vtk users.
I'm trying to make the registration of two 3D volumes using ICP. My problem is that, at their origianl positions, the volumes are opposed, so the result of ICP is wrong : i have 2 opposed volumes placed at the same refernce.
Can you tell me how to reverse one of the 2 volumes to have a correct result? It's an emergency.
Thank you

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