[Insight-users] ExtractImageFilter

[Luis Ibanez]

Hi David,

Another important difference between

          ExtractImageFilter

and

          RegionOfInterestImageFilter


is that ExtractImageFilter keeps the use the origin of the input
image as the origin of the output image, and recomputes the
Start index of the image region.,

while

the RegionOfInterestImageFilter keeps the StartIndex of the
image region as zeros, and recompute the Origin of the
Output image by using the origin of the input image and computing
the shift to the beginning of the region.

Usually, if you are doing something like Streaming, you want the behavior
 of the ExtractImageFitler, while, if you are doing something like Image
Registration, then you want the behavior of the RegionOfInterest image filter.


        Regards,


              Luis

----------------------------------------------------
On Tue, Nov 24, 2009 at 12:55 PM, David Pastor <david.pastor at die.upm.es> wrote:
> Hello,
>
> Is there any important difference between using ExtractImageFilter and
> RegionOfInterestImageFilter when trying to select for example an 3D frame of
> an 4D image?
>
> Cheers
> David
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