[vtkusers] Writing a JPEG from vtkActor

[Dominik Szczerba]

Thanks a lot, yes, I am trying the vtkImageCast, compiles fine, but get
a black image at the end. Shouldnt I set ranges somewhere?
I can do

grid->GetCellData()->GetScalars("abc")->GetRange())

but where do I plug the output?

Dominik

Amy Squillacote wrote:
> Try using either vtkImageCast or vtkImageShiftScale to change your image
> data to contain either unsigned char or unsigned short data.
> 
> - Amy
> 
> At 08:58 AM 12/20/2005, Dominik Szczerba wrote:
> 
>> What is the error? I try to do the same with vtkPNGWriter ending up with:
>>
>> vtkPNGWriter (0x8058948): PNGWriter only supports unsigned char and
>> unsigned short inputs
>>
>> Meanwhile I try to figure out how to do the appropriate convertion in
>> vtk.
>> --dsz
>>
>> Marlos Fabris wrote:
>> > Hi,
>> >
>> > I'm trying to write a jpeg file (using vtkJPEGWriter) from a vtkActor
>> > but I can't accomplish this. I have a vtk file with structured points
>> > data and I wish to transform to vtkPolyData and color it with my
>> > vtkLookupTable.
>> >
>> > Is there a way to convert only my vtkActor to a vtkImageData, without
>> > the frameborders of vtkWindowToImageFilter?
>> >
>> > Or is there a way to trim my image?
>> >
>> > Thank you in advance,
>> >
>> > Marlos Fabris
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>> -- 
>> Dominik Szczerba, Dr.
>> ETZ C110 CO-ME/BIWI CH-8092 Zurich
>> http://www.vision.ee.ethz.ch/~domi
>> _______________________________________________
>> This is the private VTK discussion list.
>> Please keep messages on-topic. Check the FAQ at:
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-- 
Dominik Szczerba, Dr.
ETZ C110 CO-ME/BIWI CH-8092 Zurich
http://www.vision.ee.ethz.ch/~domi