Hi Luca
I tried it in a machine where I am pretty certain VMTK was installed sometime
early last year and I get the same error. Please let me know what I should do.
Thanks
Manasi
________________________________
From: Ramachandran, Manasi
Sent: Tuesday, June 07, 2011 7:28 PM
To: Luca Antiga
Cc: vmtk-users@lists.sourceforge.net
Subject: RE: [vmtk-users] Registration
Hi Luca,
I see that The help does not list -iterations:
vmtkicpregistration : register a surface to a reference surface using
the ICP algorithm
Input arguments:
-id Id (int,1); default=0: script id
-handle Self (self,1): handle to self
-disabled Disabled (bool,1); default=0: disable execution and
piping
-i Surface (vtkPolyData,1): the input surface
-ifile SurfaceInputFileName (str,1): filename for the default
Surface reader
-r ReferenceSurface (vtkPolyData,1): the reference surface
-rfile ReferenceSurfaceInputFileName (str,1): filename for the
default ReferenceSurface reader
-distancearray DistanceArrayName (str,1): name of the array where
the distance of the input surface to the reference surface has to
be stored
-signeddistancearray SignedDistanceArrayName (str,1): name of the
array where the signed distance of the input surface to the
reference surface is stored; distance is positive if distance
vector and normal to the reference surface have negative dot
product, i.e. if the input surface is outer with respect to the
reference surface
-flipnormals FlipNormals (bool,1); default=0: flip normals to the
reference surface after computing them
-maxmeandistance MaximumMeanDistance (float,1); default=0.01:
convergence threshold based on the maximum mean distance between
the two surfaces
-ofile SurfaceOutputFileName (str,1): filename for the default
Surface writer
Output arguments:
-id Id (int,1); default=0: script id
-handle Self (self,1): handle to self
-o Surface (vtkPolyData,1): the output surface
-omatrix4x4 Matrix4x4 (vtkMatrix4x4,1): the output transform matrix
I will run it on a machine that VMTK was installed quite recently and let you
know if it works.
Thanks
Manasi
________________________________
________________________________
From: Luca Antiga [luca.ant...@orobix.com]
Sent: Tuesday, June 07, 2011 5:07 PM
To: Ramachandran, Manasi
Cc: vmtk-users@lists.sourceforge.net
Subject: Re: [vmtk-users] Registration
Hi Manasi,
this is odd, I added the -iterations option September 11 2009. Do you have an
earlier version than that?
Can you send me the output of vmtkicpregistration --help?
Thanks
Luca
On Jun 7, 2011, at 6:49 PM, Ramachandran, Manasi wrote:
Hi Luca
Thanks for the reply. I tried running:
vmtkicpregistration -ifile source_surface.vtp -rfile target_surface.vtp -ofile
registered_surface.vtp -iterations 100 -maxmeandistance 0.01
And I get the following error:
Creating vmtkICPRegistration instance.
Automatic piping vmtkicpregistration
Parsing options vmtkicpregistration
vmtkicpregistration error: unknown option -iterations
vmtkicpregistration : register a surface to a reference surface using
the ICP algorithm
Input arguments:
-id Id (int,1); default=0: script id
....
I can't figure out why it will not recognize -iterations as an option. Please
let me know what you think.
Thanks
Manasi
________________________________
From: Luca Antiga [luca.ant...@orobix.com]
Sent: Tuesday, June 07, 2011 7:10 AM
To: Ramachandran, Manasi
Cc: vmtk-users@lists.sourceforge.net<mailto:vmtk-users@lists.sourceforge.net>
Subject: Re: [vmtk-users] Registration
Hi Manasi,
try with the vmtkicpregistration script. The amount of success you can have
with this filter can change according to the kind of registration you want to
perform, but at least it's a starting point:
vmtkicpregistration -ifile source_surface.vtp -rfile target_surface.vtp -ofile
registered_surface.vtp -iterations 100 -maxmeandistance 0.01
Increase the -iterations option to check that the registration has actually
converged, and use -maxmeandistance to tell the script what you mean by
"registered" (in terms of the maximum allowed mean distance between the surface
- if that value is lower than the option, the registration stops regardless of
the number iterations that are set).
There is another useful option: -farthreshold (e.g. -farthreshold 0.2) which
tells the algorithm to ignore the pair of points that are far apart more than
0.2 during the registration. It's useful for surfaces that have parts that are
similar (that you want to register) but others that differ markedly.
Hope this helps
Luca
On Jun 6, 2011, at 11:40 PM, Ramachandran, Manasi wrote:
Hi All,
Have any you registered models using vmtk? If so, can you tell me how to do it?
I have 2 3D models (.vtp/.stl/.dat/.vti) and I want to register the 2 models.
Is it possible to do that on vmtk?
Thanks
Manasi
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