Hi YiQiang,
I don't think this is what happens: you only get one value per GroupId with
the vmtkbranchgeometry script,
while with vmtkcenterlinegeometry you get a curvature value for each point on
each centerline.
vmtkbranchgeometry looks at all centerlines tracts in a group and averages
their curvature value.
Luca
On May 8, 2013, at 4:48 AM, qiang zeng wrote:
> bifurcation plane is work well.
>
> another problem, when I caculate the curvature using the following script
> "vmtkcenterlinegeometry -ifile foo_cl.vtp -smoothing 1 -ofile foo_clgm.vtp",
> I just get the one curvature value for every GroupIds. but in generally, the
> curve for every GroupIds has different points (point1, point2,...) and every
> point in curve has a curvature value respectively.
> So how to understand this approach considering one curvature value as
> curvature value of entire GroupIds?
>
> YiQiang
> --- 13年5月7日，周二, Luca Antiga <luca.ant...@gmail.com> 写道：
>
> 发件人: Luca Antiga <luca.ant...@gmail.com>
> 主题: Re: [vmtk-users] bifurcation plane
> 收件人: "qiang zeng" <zengqiang2...@yahoo.com.cn>
> 抄送: vmtk-users@lists.sourceforge.net
> 日期: 2013年5月7日,周二,下午2:40
>
> Hi YiQiang,
> point1 and point2 are any two points on the plane away from the origin.
> You could do
> point1 = origin + upnormal
> point2 = origin + normal x upnormal
> where x indicates the cross product.
>
> Luca
>
> On 07/mag/2013, at 07:39, qiang zeng <zengqiang2...@yahoo.com.cn> wrote:
>
>> Usig the command line:
>>
>> vmtkbranchextractor -ifile foo_cl.vtp -radiusarray@
>> MaximumInscribedSphereRadius --pipe
>> vmtkbifurcationreferencesystems -ofile foo_rs.dat
>>
>> I get the one point and two vectors, then I fill the coordinate into the
>> Paraview (point -> Origin, Normal -> Point1 and Upnormal -> Point2) ?
>> Best
>> YiQiang
>>
>> --- 13年5月6日，周一, Luca Antiga <luca.ant...@gmail.com> 写道：
>>
>> 发件人: Luca Antiga <luca.ant...@gmail.com>
>> 主题: Re: [vmtk-users] bifurcation plane
>> 收件人: "qiang zeng" <zengqiang2...@yahoo.com.cn>
>> 抄送: vmtk-users@lists.sourceforge.net
>> 日期: 2013年5月6日,周一,下午8:54
>>
>> Hi YiQiang,
>> the figure you attached was created in Paraview using the origin and normal
>> of the plane
>> as computed with vmtk (you can output them in plain text using a .dat file
>> format) to specify the plane
>> in Paraview (Sources->Plane). It works well if the number of figures you
>> create is small.
>>
>> If you need to create the visualization automatically you'll need to write
>> VTK code and use the
>> vtkPlaneSource class to create the plane.
>> The class: http://www.vtk.org/doc/nightly/html/classvtkPlaneSource.html
>> Examples:
>> http://www.vtk.org/doc/nightly/html/c2_vtk_e_5.html#c2_vtk_e_vtkPlaneSource
>> http://www.vtk.org/doc/nightly/html/c2_vtk_t_15.html#c2_vtk_t_vtkPlaneSource
>>
>> Best,
>>
>> Luca
>>
>>
>> On May 6, 2013, at 9:40 AM, qiang zeng wrote:
>>
>>> Hi all,
>>> When I am using VMTK, I want to display the bifurcation plane (the view is
>>> like aneurysm bifurcation plane, as an attachment "bifurcation plane.jpg").
>>> Does anyone know a way to do this?
>>> Best,
>>> YiQiang
>>> <bifurcation
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