<html>
<head>
<meta content="text/html; charset=windows-1252"
http-equiv="Content-Type">
</head>
<body text="#000000" bgcolor="#FFFFFF">
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<br>
<br>
<div class="moz-cite-prefix">On 03/17/2016 08:54 PM, Johnson Keiriz
wrote:<br>
</div>
<blockquote cite="mid:002701d18086$c174df10$445e9d30$@com"
type="cite">
<meta http-equiv="Content-Type" content="text/html;
charset=windows-1252">
<meta name="Generator" content="Microsoft Word 12 (filtered
medium)">
<!--[if !mso]><style>v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style><![endif]-->
<style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:0 0 0 0 0 0 0 0 0 0;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p.MsoAcetate, li.MsoAcetate, div.MsoAcetate
{mso-style-priority:99;
mso-style-link:"Balloon Text Char";
margin:0in;
margin-bottom:.0001pt;
font-size:8.0pt;
font-family:"Tahoma","sans-serif";}
span.BalloonTextChar
{mso-style-name:"Balloon Text Char";
mso-style-priority:99;
mso-style-link:"Balloon Text";
font-family:"Tahoma","sans-serif";}
span.EmailStyle19
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
<div class="WordSection1">
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Hello,<o:p></o:p></span></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.<o:p></o:p></span></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 ?<o:p></o:p></span></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?<o:p></o:p></span></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. <o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Thanks,<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 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 class="moz-txt-link-abbreviated" href="mailto:simon.rit@gmail.com">simon.rit@gmail.com</a> [<a class="moz-txt-link-freetext" 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 class="moz-txt-link-abbreviated" href="mailto:rtk-users@public.kitware.com">rtk-users@public.kitware.com</a><br>
<b>Subject:</b> Re: [Rtk-users] Python Wrapping<o:p></o:p></span></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 moz-do-not-send="true"
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 moz-do-not-send="true"
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 moz-do-not-send="true"
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" style="width:347.55pt"
width="463" border="0" cellpadding="0"
cellspacing="0">
<tbody>
<tr style="height:83.25pt">
<td style="width:212.9pt;padding:0in 0in 0in
0in;height:83.25pt" width="284">
<p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span
style="font-size:16.0pt;color:#1F497D"><img
id="_x0000_i1025"
src="cid:part4.00040904.06050804@uclouvain.be"
alt="Description:
cid:image002.jpg@01CB5984.4EABACE0"
height="74" width="206" border="0"></span></b><o:p></o:p></p>
</td>
<td style="width:78.0pt;padding:0in 0in 0in
0in;height:83.25pt" width="104">
<p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span
style="font-size:10.0pt;color:#1F497D"
lang="EN-CA">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
style="font-size:7.5pt;color:#1F497D"
lang="EN-CA">760 St-Paul W, #101<br>
Montreal, QC<br>
Canada H3C 1M4<br>
tel: <a moz-do-not-send="true"
href="tel:%28514%29%20843-3861"
target="_blank">(514) 843-3861</a><br>
ext 217</span><o:p></o:p></p>
</td>
<td style="width:56.65pt;padding:0in 0in 0in
0in;height:83.25pt" width="76">
<p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="color:#1F497D" lang="EN-CA"> </span><o:p></o:p></p>
</td>
</tr>
</tbody>
</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>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
<pre wrap="">_______________________________________________
Rtk-users mailing list
<a class="moz-txt-link-abbreviated" href="mailto:Rtk-users@public.kitware.com">Rtk-users@public.kitware.com</a>
<a class="moz-txt-link-freetext" href="http://public.kitware.com/mailman/listinfo/rtk-users">http://public.kitware.com/mailman/listinfo/rtk-users</a>
</pre>
</blockquote>
<br>
</body>
</html>