[Paraview] Use existing texture map for 3D surface

[Dressler, Christian]

Hi Utkarsh,

I am not familiar with Python and also not with VTK.

I was looking for a free tool to test 3d scanner data reconstruction. The pipeline system and the fact that the program never crashed convinced me.

Is it a big deal to develop the proposed python script? What level of knowledge of VTK is required?


Cheers,
Christian

-----Ursprüngliche Nachricht-----
Von: Utkarsh Ayachit [mailto:utkarsh.ayachit at kitware.com] 
Gesendet: Freitag, 12. März 2010 16:13
An: Dressler, Christian
Cc: paraview at paraview.org
Betreff: Re: [Paraview] Use existing texture map for 3D surface

The problem is that the uv array needs to be marked as "Texture"
attribute for the PointData. You can write a PythonProgrammableFilter
which generate an output with the Texture coords setup correctly. Let
me know if you need help with that. Also remember this filter will
have to combine the two "u" and "v" arrays produced by
vtkTableToPoints into a single array with 2 components.

Utkarsh

On Fri, Mar 12, 2010 at 10:05 AM, Dressler, Christian
<Christian.Dressler at medizin.uni-leipzig.de> wrote:
> Hi Eric,
>
> Unfortunately this does not work. Neither for the point cloud, nor for the surface. It does only work after generating a map by paraview, but this is the wrong map.
>
> I also tried to rename the columns header the way paraview does, but it did not work. I am looking for an option similar to the "table to points filter", where I am asked which column has which meaning.
>
> Thanks,
>
> Christian
>
>
> -----Ursprüngliche Nachricht-----
> Von: Eric E. Monson [mailto:emonson at cs.duke.edu]
> Gesendet: Freitag, 12. März 2010 15:54
> An: Dressler, Christian
> Cc: paraview at paraview.org
> Betreff: Re: [Paraview] Use existing texture map for 3D surface
>
> Hey Christian,
>
> If your data already has valid texture coordinates, highlight your surface in the Pipeline Browser. You should be able to go to the Display tab of the Object Inspector and in the Color section there is an Apply Texture combo box that should not be grayed-out if everything is ready for texturing. If you pull down to Load... it will let you load your texture image and you should see it on your surface.
>
> Let us know if you have problems,
> -Eric
>
> ------------------------------------------------------
> Eric E Monson
> Duke Visualization Technology Group
>
>
> On Mar 12, 2010, at 7:51 AM, Dressler, Christian wrote:
>
>>
>> Hi,
>>
>> I am trying to reconstruct data generated by a surface scanner with paraview. The data is structured as xyzuv arrays. I managed to calculate the surface by using the filters "Table to points" and "Delaunay 2D".
>>
>> But I could not figure out, how to apply the texture to the surface. The uv-coordinates have the same format as the maps generated by the paraview texture filters (normalized position of bitmap).
>>
>> How can I make paraview using my own texture map?
>>
>>
>> Best,
>>
>> Christian
>> ____________________________________________
>> Dipl.-Ing. Christian Dressler
>> Research Associate  | Working Group - S-DICOM Solutions
>>
>> Universität Leipzig | Faculty of Medicine
>> Innovation Center Computer Assisted Surgery (ICCAS)
>> Semmelweisstr. 14
>> D - 04103 Leipzig
>> Germany
>>
>> phone  +49 (0) 341 97 - 12018
>> fax    +49 (0) 341 97 - 12009
>> christian.dressler at medizin.uni-leipzig.de
>> http://www.iccas.de/?id=430
>> ____________________________________________
>>
>> _______________________________________________
>> Powered by www.kitware.com
>>
>> Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html
>>
>> Please keep messages on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/ParaView
>>
>> Follow this link to subscribe/unsubscribe:
>> http://www.paraview.org/mailman/listinfo/paraview
>
> _______________________________________________
> Powered by www.kitware.com
>
> Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html
>
> Please keep messages on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/ParaView
>
> Follow this link to subscribe/unsubscribe:
> http://www.paraview.org/mailman/listinfo/paraview
>