[vtkusers] Construct mesh from unorganized points

[Bill Lorensen]

Erte,

Please keep the vtk users list on the replies.

You said your data was segmented. That usually means the structures of
interest have numeric labels. Can you post one of your tiff images?

Bill

On Mon, Mar 18, 2013 at 3:59 PM, Erte Pan <panerte at gmail.com> wrote:

> What are the labels in the GenerateModelsFromLabels ? Does it mean that I
> have to figure out the connectivity of the tiff image before I import them
> to the algorithm? In the algorithm, it says InputVolume is a meta file
> containing a 3 volumes of discrete labels, do these labels mean the x,y,z
> coords or something else?
>
>
> 2013/3/18 Erte Pan <panerte at gmail.com>
>
>> Thanks a lot! I'll give it a try.
>>
>>
>> 2013/3/18 Bill Lorensen <bill.lorensen at gmail.com>
>>
>>> You should use DiscreteMarchingCubes
>>>
>>> See this example:
>>> http://vtk.org/Wiki/VTK/Examples/Cxx/Medical/GenerateModelsFromLabels
>>>
>>>
>>> On Mon, Mar 18, 2013 at 3:22 PM, Erte Pan <panerte at gmail.com> wrote:
>>>
>>>> I got segmentation result（tiff）from hollow blood vessels. And I want to
>>>> render it as mesh representation.
>>>> On Mar 18, 2013 5:16 PM, "Bill Lorensen" <bill.lorensen at gmail.com>
>>>> wrote:
>>>>
>>>>> tiff describes images. There are many different ways to produce
>>>>> polydata. What application problem are you trying to solve?
>>>>>
>>>>>
>>>>> On Mon, Mar 18, 2013 at 3:12 PM, Erte Pan <panerte at gmail.com> wrote:
>>>>>
>>>>>> Hi Bill,
>>>>>> Thank you for an instant reply. But it seems I have trouble of
>>>>>> converting a tiff input into vtkpolydata. Could you tell me how can I
>>>>>> achieve that? Thank you.
>>>>>>
>>>>>>
>>>>>> 2013/3/18 Bill Lorensen <bill.lorensen at gmail.com>
>>>>>>
>>>>>>> One of these two examples might be helpful.
>>>>>>>
>>>>>>> http://vtk.org/Wiki/VTK/Examples/Cxx/Filtering/SurfaceFromUnorganizedPoints
>>>>>>>
>>>>>>> http://vtk.org/Wiki/VTK/Examples/Cxx/Filtering/SurfaceFromUnorganizedPointsWithPostProc
>>>>>>>
>>>>>>> Bill
>>>>>>>
>>>>>>> On Mon, Mar 18, 2013 at 2:31 PM, Erte Pan <panerte at gmail.com> wrote:
>>>>>>>
>>>>>>>>  Hello All,
>>>>>>>>
>>>>>>>> I'm a fresher to vtk. I was trying to construct a mesh rendering
>>>>>>>> from unorganized segmented 3D points. However, as I tried the vtkDelaunay3D
>>>>>>>> and vtkSurfaceReconstructionFilter, neither of the methods gave the correct
>>>>>>>> results. The programs crushed in the end. Here's my pipeline:
>>>>>>>> vtkTIFFReader------->vtkXMLPolyDataWriter----------> vtkDelaunay3D or
>>>>>>>> vtkSurfaceReconstructionFilter.  But the rendering was failed. Could
>>>>>>>> someone help me with this problem please? Thank you.
>>>>>>>>
>>>>>>>> Best regards,
>>>>>>>>
>>>>>>>> Erte Pan
>>>>>>>>
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>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> Unpaid intern in BillsBasement at noware dot com
>>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Unpaid intern in BillsBasement at noware dot com
>>>>>
>>>>
>>>
>>>
>>> --
>>> Unpaid intern in BillsBasement at noware dot com
>>>
>>
>>
>>
>>
>>
>
>
> --
> Erte Pan
>
> PhD student in ECE Dept., UH
> Bio-image Analytics Group
>



-- 
Unpaid intern in BillsBasement at noware dot com
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