[vtkusers] Help needed using segmented data

[Vidya Raghavan]

I get the following errors:

ERROR: In C:\VTK\Patented\vtkDecimate.cxx, line 180
vtkDecimate (0x0A99EFF8): No data to decimate!

ERROR: In C:\VTK\Graphics\vtkSmoothPolyDataFilter.cxx, line 188
vtkSmoothPolyDataFilter (0x0A99DC60): No data to smooth!

ERROR: In C:\VTK\Graphics\vtkPolyDataNormals.cxx, line 86
vtkPolyDataNormals (0x0A9936E8): No data to generate normals for!


>Vidya,
>
>	You really want to start with smaller example as a newbie. One thing to 
>track down your mistake is to print the output of each filter to find out 
>where the value you are passing is wrong.
>
>filterName Update
>puts [[filterName GetOutput] Print]
>
>HTH
>Mathieu
>Ps: Sorry for the SetValues, I thought this was using the standart 
>vtkContourFilter.
>
>Vidya Raghavan wrote:
>>
>>Also, to make things clearer... I use mean shift segmentation to segment 
>>through a set of input 256X256 BMP files 
>>http://www.cs.northwestern.edu/~vidya/VTK/input_images/.
>>
>>The segmented data files (http://www.cs.northwestern.edu/~vidya/VTK/data) 
>>have integer lables for each pixel in the corresponding 256 X 256 images.
>>
>>I am using these data files when I run region1.tcl
>>
>>So, I'm not too sure what you mean by Value, and what i need to set it to. 
>>I'll really appreciate your input.
>>
>>Thanks again..
>>
>>
>>>Vidya,
>>>
>>>     When you do the SetValue in vtkContourFilter, be sure that it is 
>>>within the correct range (use GetScalarRange to find it).
>>>
>>>HTH
>>>Mathieu
>>>
>>>Vidya Raghavan wrote:
>>>
>>>>Dear VTK users,
>>>>
>>>>I had posted this question earlier, but didn't get any response yet. So, 
>>>>I'm reposting it. Hope someone can help me.
>>>>
>>>>Basically, I am trying to model segmented data in VTK, based on the 
>>>>tutorial provided in:
>>>>
>>>>http://www.crd.ge.com/~lorensen/seg12/, where the input data is 
>>>>described as "a set of slices that have the same resolution as the 
>>>>original data, but grayscale values have been replaced with integer 
>>>>segmentation labels.".
>>>>
>>>>There were some errors in the scripts as they used an older verison of 
>>>>VTK. I now have these scripts working for VTK 4.2 and there are at 
>>>>http://www.cs.northwestern.edu/~vidya/VTK/scripts
>>>>
>>>>Now I am trying to use my own segmented data with the above scripts, 
>>>>where they represent 256 X 256 segmented data, with each pixel 
>>>>represented by an integer.
>>>>
>>>>The segmented data I have used is at: 
>>>>http://www.cs.northwestern.edu/~vidya/VTK/data
>>>>
>>>>The script I have written to describe these parameters is region1.tcl
>>>>
>>>>When I run region1.tcl I should get a vtk file region1.vtk. Instead it 
>>>>is empty and no polygons are generated. I am really trying to understand 
>>>>what is wrong, but since I'm new to VTK I still cannot figure it out.
>>>>
>>>>Could someone please help?
>>>>
>>>>Thanks.
>>>>
>>>>_________________________________________________________________
>>>>Marriage?  http://www.bharatmatrimony.com/cgi-bin/bmclicks1.cgi?74 Join 
>>>>BharatMatrimony.com for free.
>>>>
>>>>_______________________________________________
>>>>This is the private VTK discussion list. Please keep messages on-topic. 
>>>>Check the FAQ at: <http://public.kitware.com/cgi-bin/vtkfaq>
>>>>Follow this link to subscribe/unsubscribe:
>>>>http://www.vtk.org/mailman/listinfo/vtkusers
>>>>
>>>
>>>
>>>
>>
>>_________________________________________________________________
>>Marriage?  http://www.bharatmatrimony.com/cgi-bin/bmclicks1.cgi?74 Join 
>>BharatMatrimony.com for free.
>>
>>
>
>
>

_________________________________________________________________
Arrange your love marriage. http://www.shaadi.com/ptnr.php?ptnr=hmltag On 
Shaadi.com.