[Rtk-users] How to use DisplacedDetectorImageFilter

[Cyril Mory]

Hi Martin,

The displaced detector filter is integrated in the pipeline of all 
reconstruction applications in RTK. It will automatically correct for 
the shift of your detector if you provide the correct geometry file.
The geometry information must be obtained from the device you use for 
the acquisition, together with the projections. You can simulate the 
geometry of a 360° acquisition, with 180 projections (one every 2°) and 
default Source-Isocenter distance and Source-Detector distance with the 
following command :

rtksimulatedgeometry -n 180 -o geometry.xml
and edit the "geometry.xml" file to understand how it is built.

If you obtain the geometry information from your device, but fail to 
convert it to an xml RTK geometry file, we can provide help to put you 
on the right track.

Regards,
Cyril

On 05/13/2015 04:10 AM, 马丁 wrote:
> Dear all,
>       I'm reconstructing an image with 25% detector shift, but I don't 
> known how to set the geometry parameters or others. what should
> I do?
>  Martin
>
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