Abstract
Correction of vertical point of projection images using the correct axis tilt parameter in the Octopus software package. In the acquisition process to get a projection image need sample test stability of vertical point directly to the detector. During the acquisition process, the sample test must be still on coordinate and not take a movement. The problem that appears in some tests caused when both of them haven’t be done, can make projection image not good. This problem can be handled with the correction parameter and without the repeat acquisition process. The correction of the projection image may concern the vertical point movement of the sample test to the detector. It can decide a conclusion for sample test conditions. Correct axis tilt parameter help to change a better projection image result for the reconstruction process. The first correction was obtained tilt angle amount 0.333289°, the second correction was obtained tilt angel amount-0.463394°, and the third correction was obtained tilt angle amount 0.4903°. The correct axis tilt was succeeded rotate projection image and change the view transaction of reconstruction better and can be read easily.
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