[vtkusers] Construct mesh from unorganized points

[Bill Lorensen]

Yes, 255 start and end.


On Mon, Mar 18, 2013 at 4:34 PM, Erte Pan <panerte at gmail.com> wrote:

> So the InputVolume means the input 3D Meta Image, Starlabel and Endlabel
> are both 255?
>
> 2013/3/18 Bill Lorensen <bill.lorensen at gmail.com>
>
>> So your label is 255.
>>
>> You will have to modify the example to read your tiff images.
>>
>>
>> On Mon, Mar 18, 2013 at 4:21 PM, Erte Pan <panerte at gmail.com> wrote:
>>
>>> Sure. Here is one small patch I obtained from segmentation. It is a 3D
>>> 8-bit gray level image of 300x300x200 voxels, with 255 represent vessel
>>> signals and 0 represent background.
>>>
>>>
>>> 2013/3/18 Bill Lorensen <bill.lorensen at gmail.com>
>>>
>>>> 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
>>>>
>>>
>>>
>>>
>>> --
>>> Erte Pan
>>>
>>> PhD student in ECE Dept., UH
>>> Bio-image Analytics Group
>>>
>>
>>
>>
>> --
>> 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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