Hi Simon,
Yes, we have very decent reconstructions in the opposite direction.
If you want to have a look, here is a link towards the sinogram and the
two geometry files:
https://www.dropbox.com/sh/xtzof23ar89vutm/AAASZhDBcCez_c1BN2ed74H_a?dl=0
I downsampled the projections so that the file size remains reasonable.
Thank you very much for you help,
Vincent
On 27.08.20 17:02, Simon Rit wrote:
Hi Vincent,
This sounds like a typical geometry problem. It's hard to guess what
could be the problem without data. Is it a system for which you're
able to reconstruct in the opposite direction?
Simon
On Thu, Aug 27, 2020 at 2:17 PM Vincent Libertiaux <v...@xris.eu
<mailto:v...@xris.eu>> wrote:
Dear RTK users,
I am trying to reconstruct a volume using the opposite rotation
direction; I basically defined my rotation angle to be -360
degrees and
my initial angle to be 359.6 (I have 900 projections).
The results present artefacts, mostly important blurs compared to the
"original" reconstruction. To be sure I was not misinterpreting
the way
rtk deals with the geometry, I performed the same reconstruction with
the "direct" rotation direction (from 0 to 359.6) but reordering my
projections instead, which yields in the same blurry results.
I feel I am missing some basic understanding of what is happening,
any
help you can provide would be much appreciated !
Best regards,
Vincent
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