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    Perfect, thanks<br>
    Johnson<br>
    <br>
    <div class="moz-cite-prefix">On 3/18/2016 9:31 AM, Cyril Mory wrote:<br>
    </div>
    <blockquote cite="mid:56EC0335.50109@uclouvain.be" type="cite">
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      Hi again,<br>
      <br>
      You got the SART filter right. As for the conjugate gradient, the
      filter is actually ConjugateGradientConeBeamReconstructionFilter
      (for the 3D non-regularized reconstruction) and
      RegularizedConjugateGradientConeBeamReconstructionFilter (its
      regularized counterpart). <br>
      <br>
      The filter you found, 
      FourDConjugateGradientConeBeamReconstructionFilter, is used for 4D
      reconstruction (you need a cardiac or respiratory phase signal).
      Its regularized counterpart is
      FourDROOSTERConeBeamReconstructionFilter.<br>
      <br>
      In addition to those, RTK also has
      ADMMTotalVariationConeBeamReconstructionFilter and
      ADMMWaveletsConeBeamReconstructionFilter, which implement the
      Alternating Direction Method of Multiplier algorithm. <br>
      <br>
      You can find a description of these algorithms in <a
        moz-do-not-send="true" class="moz-txt-link-freetext"
        href="https://hal.inria.fr/tel-00985728/document"><a class="moz-txt-link-freetext" href="https://hal.inria.fr/tel-00985728/document">https://hal.inria.fr/tel-00985728/document</a></a><br>
      <br>
      Note that the SART filter has a m_NumberOfProjectionsPerSubset
      member. Setting it to 1 (default) gives you SART, setting it to n
      with 1 < n < TotalNumberOfProjections gives you OS-SART, and
      setting it to n=TotalNumberOfProjections gives you SIRT.<br>
      <br>
      That's pretty much all there is in RTK at the moment.<br>
      Cyril<br>
      <br>
      <div class="moz-cite-prefix">On 03/18/2016 02:11 PM, Johnson
        Keiriz wrote:<br>
      </div>
      <blockquote cite="mid:56EBFE6A.2070606@theobjects.com" type="cite">
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        Hello,<br>
        Can you please confirm that the following classes are the ones
        used for the iterative reconstruction:<br>
        1 - SART: SARTConeBeamReconstructionFilter<br>
        2- Conjugate gradient:
        FourDConjugateGradientConeBeamReconstructionFilter<br>
        <br>
        Is there a 3D conjugate gradient?<br>
        Are these the only classes for iterative reconstruction?<br>
        <br>
        Thanks,<br>
        Johnson<br>
        <br>
        <div class="moz-cite-prefix">On 3/18/2016 4:12 AM, Cyril Mory
          wrote:<br>
        </div>
        <blockquote cite="mid:56EBB86E.80409@uclouvain.be" type="cite">
          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">
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              <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 moz-do-not-send="true"
                      class="moz-txt-link-abbreviated"
                      href="mailto:simon.rit@gmail.com">simon.rit@gmail.com</a>
                    [<a moz-do-not-send="true"
                      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 moz-do-not-send="true"
                      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>
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                          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"><a class="moz-txt-link-abbreviated" href="mailto:rtk-users-bounces@public.kitware.com">rtk-users-bounces@public.kitware.com</a></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>
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                                  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:part8.02000400.09020905@theobjects.com"
                                          alt="Description:
                                          cid:image002.jpg@01CB5984.4EABACE0"
                                          border="0" height="74"
                                          width="206"></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>
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                                  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>
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                            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>
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            <br>
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            <br>
            <pre wrap="">_______________________________________________
Rtk-users mailing list
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</pre>
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                  style="font-size:10.0pt;font-family:"Times New
                  Roman","serif";color:#1F497D"
                  lang="EN-CA">Johnson Keiriz, PhD<br>
                  Senior Software Engineer</span></b></p>
            <p class="MsoNormal"><span
                style="font-size:7.5pt;line-height:115%;
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                Roman","serif";color:#1F497D"
                lang="EN-CA">760 St-Paul W, #101<br>
                Montreal, QC<br>
                Canada  H3C 1M4<br>
                tel: (514) 843-3861<br>
                ext 217</span></p>
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              style="font-size:10.0pt;font-family:"Times New
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Keiriz,
              PhD<br>
              Senior Software Engineer</span></b></p>
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            style="font-size:7.5pt;line-height:115%;
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            St-Paul W, #101<br>
            Montreal, QC<br>
            Canada  H3C 1M4<br>
            tel: (514) 843-3861<br>
            ext 217</span></p>
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