<div dir="ltr"><div>Hi,</div><div>There are three rotations to chose the orientation of the detector: GantryAngle, InPlaneAngle and OutOfPlane. Any orientation can be set. If you want a slant around the detector center, then a change in the GantryAngle will imply a change in SourceToIsocenter, SourceToDetector (both measured in the direction orthogonal to the detector) and SourceOffsetX / ProjectionOffsetX. The geometry documentation should help:</div><div><a href="http://www.openrtk.org/Doxygen/DocGeo3D.html" target="_blank">http://www.openrtk.org/Doxygen/DocGeo3D.html</a></div><div>If you mind find it to set one detector position by setting the source position, detector origin position and the u and v axes. See all the different versions of AddProjection in the <a href="http://www.openrtk.org/Doxygen/classrtk_1_1ThreeDCircularProjectionGeometry.html">doxygen</a>.<br></div><div>Best regards,</div><div>Simon<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Nov 25, 2022 at 10:21 AM 김창환 <<a href="mailto:gameboy514@gmail.com" target="_blank">gameboy514@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Dear all,<div><br></div><div>I am now generating the simulation data with geometric distortions on the detector, by using RTK.</div><div><br></div><div>Translation can be easily implemented by adjusting the parameters (proj_iso_x and proj_iso_y).</div><div>However, for the rotation, it seems that there are only two parameters I can manage. (in_angle and out_angle).</div><div>Thus, at this moment, tilt and skew are available to implement, but for the slant, it seems that there is no such way.<br></div><div><br></div><div>Please let me know if there is any way to implement rotation about one other axis.<br></div><div><br></div><div>(Image from <span style="font-size:13px;font-family:Arial,sans-serif">Wang, Zhao, et al. "Improvements in micro-CT method for characterizing x-ray monocapillary optics." </span><i style="font-size:13px;font-family:Arial,sans-serif">Optics Communications</i><span style="font-size:13px;font-family:Arial,sans-serif"> 504 (2022): 127474.)</span></div><div><span style="font-size:13px;font-family:Arial,sans-serif"><br></span></div><div><img src="cid:ii_lawajsl61" alt="image.PNG" style="margin-right: 0px;" width="383" height="193"><br></div></div>
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