[Rtk-users] 答复: Rtk Detector Displacemets

[Freyman li]

Thanks for your help! I attached the geometry settings to this email. And my detector size is 768*960 with a pixel size 0.254mm.

 

 

 

 

发件人: louie L [mailto:ghostcz at hotmail.com] 
发送时间: 2015年12月14日 11:38
收件人: Freyman li; rtk-users at public.kitware.com
主题: RE: [Rtk-users] Rtk Detector Displacemets

 

 

 

Sent from Mail <http://go.microsoft.com/fwlink/?LinkId=550986>  for Windows 10

 


From: louie L <mailto:ghostcz at hotmail.com> 
Sent: Monday, December 14, 2015 04:38
To: Freyman li <mailto:lihanwei_1500 at 126.com> 
Subject: RE: [Rtk-users] Rtk Detector Displacemets

 

Hi,

 

Can you post your geometry file to the mail list? Your problem sounds like a result of wrong geometry settings.

 

Best regards,

Louie

 

Sent from Mail <http://go.microsoft.com/fwlink/?LinkId=550986>  for Windows 10

 


From: Freyman li <mailto:lihanwei_1500 at 126.com> 
Sent: Monday, December 14, 2015 04:25
To: Rtk-users at public.kitware.com <mailto:Rtk-users at public.kitware.com> 
Cc: rtk-users at openrtk.org <mailto:rtk-users at openrtk.org> 
Subject: [Rtk-users] Rtk Detector Displacemets

 

Dear rtk-users,

 

I have generated the geometry XML file by using the geometry calibration in my CBCT system. And I want to reconstruct the volume from 360 raw projections data.

But after running the rtkfdk.cxx, I get an output message that "Cannot account for too large detector displacements, a part of space must be covered by all projections."

And I try to use the addprojection function to generate a simple geometry structure using only SID and SDD, this problem did not happen but the reconstruction result is not correct.

How can I solve this problem? Is there any limitation about the detector weighting?

 

I really appreciate any help you can provide.

 

With regards,

Freyman li

 

 

 

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