[vtkusers] Construct mesh from unorganized points

[Erte Pan]

Thank you so much!

2013/3/18 Bill Lorensen <bill.lorensen at gmail.com>

> 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
>



-- 
Erte Pan

PhD student in ECE Dept., UH
Bio-image Analytics Group
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