<div dir="ltr"><div class="gmail_default" style="font-family:'trebuchet ms',sans-serif;color:rgb(0,0,255)">Yes, sure. Simon. If you think the geometry setting is not correct from the reconstructed images. Of course it is I that should figure it out.</div><div class="gmail_default" style="font-family:'trebuchet ms',sans-serif;color:rgb(0,0,255)">Thanks again for the help. :)</div><div class="gmail_default" style="font-family:'trebuchet ms',sans-serif;color:rgb(0,0,255)">Regards</div><div class="gmail_default" style="font-family:'trebuchet ms',sans-serif;color:rgb(0,0,255)">Guangming </div></div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><font style="line-height:23.32400131225586px" face="arial, helvetica, sans-serif" color="#674ea7"><b><i>Guangming Zang (Alex)</i></b></font><div style="line-height:23.32400131225586px"><font face="arial, helvetica, sans-serif"><b><i><font color="#0b5394">King Abdullah University of Science and Technology</font><font color="#073763">(KAUST)</font></i></b></font></div><div style="line-height:23.32400131225586px"><span style="font-family:arial;font-size:13px;line-height:20.020000457763672px"><font color="#0b5394"><b><i>University of Chinese Academy of Sciences(UCAS)</i></b></font></span><font face="arial, helvetica, sans-serif"><b><i><font color="#073763"><br></font></i></b></font></div><div style="line-height:23.32400131225586px"><span style="font-family:arial;font-size:13px;line-height:20.020000457763672px"><font color="#0b5394"><b><i><br></i></b></font></span></div><div style="line-height:23.32400131225586px"><span style="font-family:arial;font-size:13px;line-height:20.020000457763672px"><font color="#0b5394"><b><i><br></i></b></font></span></div><div style="line-height:23.32400131225586px"><br></div></div></div></div></div></div>
<br><div class="gmail_quote">2015-06-02 21:15 GMT+03:00 Simon Rit <span dir="ltr"><<a href="mailto:simon.rit@creatis.insa-lyon.fr" target="_blank">simon.rit@creatis.insa-lyon.fr</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi,<br>
Yes, after looking at the images again, there is clearly a geometry<br>
problem. I don't understand what is your geometry but since you have a<br>
lot of information for RTK geometry (wiki document + code), maybe it's<br>
up to you to figure it out?<br>
Good luck and regards,<br>
Simon<br>
<div><div class="h5"><br>
On Tue, Jun 2, 2015 at 7:56 PM, Guangming Zang<br>
<<a href="mailto:guangming.zang@kaust.edu.sa">guangming.zang@kaust.edu.sa</a>> wrote:<br>
> Hi Simon,<br>
> Thanks for prompt reply.<br>
> Actually, i used one iteration in FDK reconstruction, and 20 iterations in<br>
> ADMMTV(5 conjugate gradient in each ADMM), which is enough i think.<br>
> Now i am thinking maybe the problem is caused by geometry settings, and if<br>
> so, i really need your help:<br>
> In my own project, i use the "cone beam angle" and the "souce to isocenter<br>
> distance"(same as sid in RTK) to set the scene,please see the attached<br>
> geometry image.<br>
><br>
> To make the same geometry in RTK , if the Projection size is A(pls see the<br>
> attached image), and the detector length is B(i.e., the projection image<br>
> size is B). in RTK ,<br>
> i set the SDD=SDD*B/A, and SID=SID. i thought it is correct because the<br>
> reconstructed volume size and slice size are same with ground truth, but i<br>
> am really not sure it is right or not.(the projection image is .bmp files,i<br>
> do not know the dpi)<br>
><br>
> i do not know i described it clearly or not. if you need more information<br>
> ,please let me know.<br>
> Really appreciated for the help.<br>
> Regards<br>
><br>
><br>
> Guangming Zang (Alex)<br>
> King Abdullah University of Science and Technology(KAUST)<br>
> University of Chinese Academy of Sciences(UCAS)<br>
><br>
><br>
><br>
><br>
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