[Insight-users] Visualizing the speed image

[Luis Ibanez]

Hi Jayant,

You can save the speed image in the same way
that you would do for any other ITK image.

Simply instantiate an ImageFileWriter<> over
the OutputImageType of the Sigmoid filter.

Somehting like:


typedef SigmoidFilter::OutputImageType  SpeedImageType;

typedef itk::ImageFileWriter< SpeedImageType > WriterType;

WriterType::Pointer writer = WriterType::New();

writer->SetInput( sigmoid->GetOutput() );

writer->SetFileName("SpeedImage.mhd");

try
   {
   writer->Update();
   }
catch( itk::ExceptionObject & excp )
  {
  std::cerr << excp << std::endl;
  }


NOTE that not all image file formats support all
possible pixel types. If your speed image has pixel
type = float or double, then you should probably use
the MetaImage or VTK image formats.

The resulting image can be viewer with the ImageViewer
application in InsightApplication, or can directly be
loaded into ParaView. You can download ParaView
(sources and/or binaries) for free from:


             http://www.paraview.org/




Regards,


   Luis


-----------------------
Jayant Chauhan wrote:

> Hey Fellas,
> Is there any means by which we can visualise (save as a jpeg for 
> example) the speed image we get after taking sigmoid in the LEVELSET 
> Filters ?! As in, the direction of motion of each point on the contour.
>  
> Also, does anyone know of a video repository from where maybe I can 
> download videos (for example traffic monitoring or someother vision 
> problem video) to test my motion estimation and tracking.
>  
> Also, anyway of painting a gif in QT-2.3 non-commercial version for 
> windows ?!
>  
>  
> with regards
> Jayant
>