[vtkusers] Help for sampling of polydata

[Rong Xu]

Thank you for your suggestion!

2012/5/15 Jothybasu Selvaraj <jothybasu at gmail.com>

> I think you should use vtkDecimatePro (there are many others in vtk) to
> reduce the number of points.
>

I used vtkDecimatePro to reduce the number of points, but there is a
problem when running ("vtkDecimatePro (047640E8): No data to decimate!").
Then I used vtkTriangleFilter before vtkDecimatePro, but there still is the
same problem. Do you have any ideas ?


>
> Jothy
>
> On Tue, May 15, 2012 at 3:46 PM, Rong Xu <xurong1981 at gmail.com> wrote:
>
>> Dear, all:
>>
>> I extract a surface of one object from 3D ultrasound image, but there are
>> many points on extracted surface (more than 300,000). So I want to sampling
>> half or 25% representative points from the whole point set. Then I tried
>> vtkShrinkPolyData method and set shrink factor as 0.25, but the number of
>> points from shrinked result is not changed compared with the whole point
>> set. Does anyone have any ideas about my purpose ?
>>
>> Thank you for your help!
>>
>> --
>>
>> ---------------------
>> Best Regards!
>>
>> ===============================================
>> Rong Xu,  Ph.D Student
>> Ohya Lab
>> Graduate School of Global Information and Telecommunication
>> Studies (GITS), Waseda University
>> 1-6-1 Nishi Waseda, Shinjuku-ku, Tokyo, Japan (¨“169-8050)
>>
>> Tel:          +81-80-4208-1207
>> E-mail:     xurong1981 at gmail.com
>>                xurong at fuji.waseda.jp
>> ===============================================
>>
>>
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>
>
> --
> Jothy
>
>


-- 

---------------------
Best Regards!

===============================================
Rong Xu,  Ph.D Student
Ohya Lab
Graduate School of Global Information and Telecommunication
Studies (GITS), Waseda University
1-6-1 Nishi Waseda, Shinjuku-ku, Tokyo, Japan (¨“169-8050)

Tel:          +81-80-4208-1207
E-mail:     xurong1981 at gmail.com
               xurong at fuji.waseda.jp
===============================================
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