<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 12 (filtered medium)"><!--[if !mso]><style>v\:* {behavior:url(#default#VML);}
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</o:shapelayout></xml><![endif]--></head><body bgcolor=white lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Hi Cyril,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Thanks for the valuable information, I will test and get back to you.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Regards,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Johnson<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'> Cyril Mory [mailto:cyril.mory@uclouvain.be] <br><b>Sent:</b> Friday, March 18, 2016 4:13 AM<br><b>To:</b> Johnson Keiriz; 'Simon Rit'<br><b>Cc:</b> rtk-users@public.kitware.com<br><b>Subject:</b> Re: [Rtk-users] Python Wrapping<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='margin-bottom:12.0pt'>Hi Johnson,<br><br>Regarding the iterative methods:<br>- In SART, you can use the CUDA forward and back projectors, but the rest of the calculation is performed on CPU. We do not use SART a lot, so we have not fully optimized it. <br>- Conjugate gradient, on the other hand, is entirely performed on the GPU. Note that a regularized conjugate gradient reconstruction filter is also available (with total variation denoising, wavelets denoising, and positivity enforcement)<br><br>I hope you will find what you need,<br>Regards,<br>Cyril<o:p></o:p></p><div><p class=MsoNormal>On 03/17/2016 08:54 PM, Johnson Keiriz wrote:<o:p></o:p></p></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Hello,</span><o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I did rebuild and now things are working. I tested reconstruction with and without the filtering and there were differences. Though, I am not sure that filtering have provided a better reconstruction.</span><o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I want to experiment the iterative methods. Can you please confirm for me which iterative method are fully implemented in CUDA: is it the conjugate gradient or SART ?</span><o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I have noticed that they are not wrapped at all, any guide on how to introduce new filters?</span><o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Once I have tested my wrapping, I will submit a github pull-request. </span><o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Thanks,</span><o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Johnson</span><o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><o:p></o:p></p><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <a href="mailto:simon.rit@gmail.com">simon.rit@gmail.com</a> [<a href="mailto:simon.rit@gmail.com">mailto:simon.rit@gmail.com</a>] <b>On Behalf Of </b>Simon Rit<br><b>Sent:</b> Thursday, March 17, 2016 1:54 PM<br><b>To:</b> Johnson Keiriz<br><b>Cc:</b> <a href="mailto:rtk-users@public.kitware.com">rtk-users@public.kitware.com</a><br><b>Subject:</b> Re: [Rtk-users] Python Wrapping</span><o:p></o:p></p></div><p class=MsoNormal> <o:p></o:p></p><div><div><div><div><p class=MsoNormal>Hi,<o:p></o:p></p></div><p class=MsoNormal>Good! Indeed, many things are not wrapped. There is a trick regarding modifications of the wrappings. You need to either start from scratch the compilation or delete the file SimpleRTK-prefix/src/SimpleRTK-stamp/SimpleRTK-configure. This will trigger a reconfiguration of the SimpleRTK and, hopefully, account for your modifications.<o:p></o:p></p></div><p class=MsoNormal>Don't hesitate to submit a github pull-request when you have something working.<o:p></o:p></p></div><p class=MsoNormal>Simon<o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p><div><p class=MsoNormal>On Thu, Mar 17, 2016 at 4:33 PM, Johnson Keiriz <<a href="mailto:jkeiriz@theobjects.com" target="_blank">jkeiriz@theobjects.com</a>> wrote:<o:p></o:p></p><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:#1F497D'>Hello again,</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:#1F497D'>I found out about the json wrapping files. I added the wrapping for all the filters, but I haven’t noticed any effect from setting the filters !!! </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:#1F497D'>Any hints ?</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:#1F497D'>Regards,</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:#1F497D'>Johnson</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:#1F497D'> </span><o:p></o:p></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Rtk-users [mailto:<a href="mailto:rtk-users-bounces@public.kitware.com" target="_blank">rtk-users-bounces@public.kitware.com</a>] <b>On Behalf Of </b>Johnson Keiriz<br><b>Sent:</b> Thursday, March 17, 2016 9:23 AM<br><b>To:</b> <a href="mailto:rtk-users@public.kitware.com" target="_blank">rtk-users@public.kitware.com</a>; Simon Rit<br><b>Subject:</b> [Rtk-users] Python Wrapping</span><o:p></o:p></p></div></div><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Hello, <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>I am using the Python wrapped version of RTK. I have a question regarding the wrapping:<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>It seems that not all functionality is available, for example: for the <b>CudaFDKConeBeamReconstructionFilter, </b>I was not able to set the cut frequency of the any of the filters<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>(RamLaK, Cosine, ShepLogan) except for the Hann . Are the methods not wrapped ?<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Thanks,<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Johnson<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0 width=463 style='width:347.55pt'><tr style='height:83.25pt'><td width=284 style='width:212.9pt;padding:0in 0in 0in 0in;height:83.25pt'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span style='font-size:16.0pt;color:#1F497D'><img border=0 width=206 height=74 id="_x0000_i1025" src="cid:image001.jpg@01D180EF.F5C3E450" alt="Description:
cid:image002.jpg@01CB5984.4EABACE0"></span></b><o:p></o:p></p></td><td width=104 style='width:78.0pt;padding:0in 0in 0in 0in;height:83.25pt'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span lang=EN-CA style='font-size:10.0pt;color:#1F497D'>Johnson Keiriz, PhD<br>Senior Software Engineer</span></b><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-CA style='font-size:7.5pt;color:#1F497D'>760 St-Paul W, #101<br>Montreal, QC<br>Canada H3C 1M4<br>tel: <a href="tel:%28514%29%20843-3861" target="_blank">(514) 843-3861</a><br>ext 217</span><o:p></o:p></p></td><td width=76 style='width:56.65pt;padding:0in 0in 0in 0in;height:83.25pt'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-CA style='color:#1F497D'> </span><o:p></o:p></p></td></tr></table><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:9.0pt;color:#0F243E'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div></div></div></div></div><p class=MsoNormal> <o:p></o:p></p></div><p class=MsoNormal><br><br><br><o:p></o:p></p><pre>_______________________________________________<o:p></o:p></pre><pre>Rtk-users mailing list<o:p></o:p></pre><pre><a href="mailto:Rtk-users@public.kitware.com">Rtk-users@public.kitware.com</a><o:p></o:p></pre><pre><a href="http://public.kitware.com/mailman/listinfo/rtk-users">http://public.kitware.com/mailman/listinfo/rtk-users</a><o:p></o:p></pre></blockquote><p class=MsoNormal><o:p> </o:p></p></div></body></html>