[Insight-users] Spatial Objects and the SpatialObjectToImageFilter

[Julien Jomier]

Hi Dominique,

The IsInside() function is not implemented for the ArrowSpatialObject so 
  the SpatialObjectToImageFilter cannot be used with this object.

However, for Line, Surface and BlobSpatialObject the 
SpatialObjectToImageFilter should work. As you probably know these 
objects are composed of points (each point having at least a location 
plus other parameters). The SpatialObjectToImageFilter will set a bright 
pixel if at least one point lies inside a pixel.

My guess is that you are not creating the Line/Surface/BlobSpatialObject 
correctly. You can look at the SoftwareGuide (chapter 5) for more 
information on how to create these objects.

Let us know if you have further problems,

Julien

Dominique Belhachemi wrote:
> Hello,
> 
> after creating a SpatialObject i can produce an Image of this 
> SpatialObject with the SpatialObjectToImageFilter.
> 
> This process works fine in the case of CylinderSpatialObject or 
> EllipseSpatialObjects for example.
> 
> But this process produces for a few SpatialObjects like
> - ArrowSpatialObject
> - LineSpatialObject
> - SurfaceSpatialObject
> - BlobSpatialObject
> only Images with grayvalue zero. (This means the pictures are black)
> 
> 
> Is this volitional ?
> How can i solve this problem?
> 
> 
> Dominique
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