<div dir="ltr"><div class="gmail_default" style="font-family:'trebuchet ms',sans-serif"><p class="MsoNormal" style="color:rgb(0,0,255)"> </p>
<p class="MsoNormal"><font color="#0000ff">Hi Chao,</font></p>
<p class="MsoNormal"><font color="#0000ff">Thanks for your help.</font></p>
<p class="MsoNormal"><font color="#0000ff">Yes, it works. But I am still a little confused.</font></p>
<p class="MsoNormal"><font color="#0000ff"> I<a href="http://wiki.openrtk.org/index.php/RTK/Examples/ADMMTVReconstruction">n the example in wiki,</a>the only input for command rtkdrawgeometricphantom is SheppLogan.txt, in which , after I checked,
the geometry information is not included. So I thought I can generated any size
of volume as I want. (for example, 64^3 volume dimension with spacing 1 or 1024^3
volume dimension with spacing 10) why should the dimension
*spacing (1*512=2*256=512) should be fixed as a constant???</font></p>
<p class="MsoNormal"><br></p><font color="#0000ff">Briefly speaking,my question is , by using command <span style="font-family:monospace,monospace;font-size:14px;line-height:1.2em;background-color:rgb(249,249,249)">rtkadmmtotalvariation or </span><span style="font-family:monospace,monospace;font-size:14px;line-height:1.2em;background-color:rgb(249,249,249)">rtkdrawgeometricphantom, </span><span style="font-family:monospace,monospace;font-size:14px;line-height:1.2em;background-color:rgb(249,249,249)"><br></span></font></div><div class="gmail_default" style="font-family:'trebuchet ms',sans-serif"><font color="#0000ff">how can i generated a 128^3 dimension SheppLogan volume with spacing as 1 . Is it possible for the SheppLogan.txt provided by this example to make it ??? </font></div><div class="gmail_default" style="font-family:'trebuchet ms',sans-serif">
<p class="MsoNormal"><font color="#0000ff">So could you help me to find the solution??</font></p><p class="MsoNormal"><font color="#0000ff">Thanks for your help, Chao.</font></p><p class="MsoNormal"><font color="#0000ff">With my best regards </font></p><p class="MsoNormal"><font color="#0000ff">Guangming </font></p></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">2015-05-11 11:06 GMT+03:00 Chao Wu <span dir="ltr"><<a href="mailto:wuchao04@gmail.com" target="_blank">wuchao04@gmail.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hi Guangming,<div><br></div><div>If you half the spacing you need twice the dimension (in length, or 8 times in volume) to cover the same area, i.e. --spacing 1 --dimension 512.</div><div>Is this what you want?</div><div><br></div><div>Regards,</div><div>Chao</div></div><div class="gmail_extra"><br><div class="gmail_quote"><div><div class="h5">2015-05-10 22:50 GMT+02:00 Guangming Zang <span dir="ltr"><<a href="mailto:guangming.zang@kaust.edu.sa" target="_blank">guangming.zang@kaust.edu.sa</a>></span>:<br></div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="h5"><div dir="ltr"><div class="gmail_default" style="font-family:'trebuchet ms',sans-serif"><font color="#0000ff">Hi all.</font></div><div class="gmail_default" style="font-family:'trebuchet ms',sans-serif"><font color="#0000ff">I have implemented SART algorithm with some optimizations.and i wanna to make a comparison with the implementations in our RTK.</font></div><div class="gmail_default" style="font-family:'trebuchet ms',sans-serif"><font color="#0000ff">My questions are:</font></div><div class="gmail_default" style="font-family:'trebuchet ms',sans-serif"><font color="#0000ff">1. how to use RTK to generate the initial volume(i.e., ground Truth )to make the comparison?</font></div><div class="gmail_default" style="font-family:'trebuchet ms',sans-serif"><font color="#0000ff">2. My answer to the question 1 is that maybe i can use <span style="font-family:monospace,monospace;font-size:14px;line-height:1.2em;background-color:rgb(249,249,249)">rtkdrawgeometricphantom to generate a reference volume. However, </span></font></div><div class="gmail_default" style="font-family:'trebuchet ms',sans-serif"><font color="#0000ff">I noticed that in the <a href="http://wiki.openrtk.org/index.php/RTK/Examples/ADMMTVReconstruction" target="_blank">ADMMTV example in RTK wiki page,</a> when i use the default demand, it works well (both for <span style="font-family:monospace,monospace;font-size:14px;line-height:1.2em;background-color:rgb(249,249,249)">rtkadmmtotalvariation and </span><span style="font-family:monospace,monospace;font-size:14px;line-height:16.7999992370605px;background-color:rgb(249,249,249)">rtkdrawgeometricphantom)</span><span style="font-family:monospace,monospace;font-size:14px;line-height:16.7999992370605px;background-color:rgb(249,249,249)"> </span><span style="font-family:monospace,monospace;font-size:14px;line-height:1.2em;background-color:rgb(249,249,249)"><br></span></font></div><div class="gmail_default" style="font-family:'trebuchet ms',sans-serif"><font color="#0000ff">. But when i change the spacing from 2 to 1, and dimension as 128. i.e. the commands</font><br></div><div class="gmail_default"><font color="#0000ff" face="trebuchet ms, sans-serif">from </font></div><div class="gmail_default"><font face="trebuchet ms, sans-serif"><span style="color:rgb(0,0,0);font-size:14px;line-height:1.2em;background-color:rgb(249,249,249)">rtkdrawgeometricphantom </span><span style="color:rgb(0,0,0);font-size:14px;line-height:1.2em">--spacing</span><span style="color:rgb(0,0,0);font-size:14px;line-height:1.2em;background-color:rgb(249,249,249)"> </span><span style="font-size:14px;line-height:1.2em"><font color="#ff0000">2</font></span><span style="color:rgb(0,0,0);font-size:14px;line-height:1.2em;background-color:rgb(249,249,249)"> </span><span style="color:rgb(0,0,0);font-size:14px;line-height:1.2em">--dimension</span><span style="font-size:14px;line-height:1.2em;background-color:rgb(249,249,249)"><font color="#000000"> </font><font color="#ff0000">256</font></span><span style="color:rgb(0,0,0);font-size:14px;line-height:1.2em">--phantomfile</span><span style="color:rgb(0,0,0);font-size:14px;line-height:1.2em;background-color:rgb(249,249,249)"> SheppLogan.txt </span><span style="color:rgb(0,0,0);font-size:14px;line-height:1.2em">-o</span><span style="color:rgb(0,0,0);font-size:14px;line-height:1.2em;background-color:rgb(249,249,249)"> ref.mha</span></font></div><div class="gmail_default"><span style="font-size:14px;line-height:1.2em;background-color:rgb(249,249,249)"><font color="#0000ff" face="trebuchet ms, sans-serif">to </font></span></div><div class="gmail_default"><pre style="font-size:14px;padding:0px;border:0px none white;line-height:1.2em;font-stretch:normal;margin-top:0px;margin-bottom:0px;vertical-align:top;background-image:none;background-color:rgb(249,249,249);background-repeat:initial"><font face="trebuchet ms, sans-serif"><font color="#000000">rtkdrawgeometricphantom </font><span style="color:rgb(0,0,0)">--spacing</span><font color="#000000"> </font><span><font color="#ff0000">1</font></span><font color="#000000"> </font><span style="color:rgb(0,0,0)">--dimension</span><font color="#000000"> </font><font color="#ff0000">128 </font><span style="color:rgb(0,0,0)">--phantomfile</span><font color="#000000"> SheppLogan.txt </font><span style="color:rgb(0,0,0)">-o</span><font color="#000000"> ref.mha</font></font></pre><pre style="font-size:14px;padding:0px;border:0px none white;line-height:1.2em;font-stretch:normal;margin-top:0px;margin-bottom:0px;vertical-align:top;background-image:none;background-color:rgb(249,249,249);background-repeat:initial"><font face="trebuchet ms, sans-serif"><font color="#0000ff">the volume's visualization(</font><span style="color:rgb(0,0,0);line-height:1.2em">ref.mha</span><span style="color:rgb(0,0,255);line-height:1.2em">) is wired .</span></font></pre><pre style="font-size:14px;padding:0px;border:0px none white;line-height:1.2em;font-stretch:normal;margin-top:0px;margin-bottom:0px;vertical-align:top;background-image:none;background-color:rgb(249,249,249);background-repeat:initial"><font color="#0000ff" face="trebuchet ms, sans-serif">So can you help me to find what's going on or tell me a better way to make the comparison between RTK method and my implementations.</font></pre><pre style="font-family:monospace,monospace;font-size:14px;padding:0px;border:0px none white;color:rgb(0,0,0);line-height:1.2em;font-stretch:normal;margin-top:0px;margin-bottom:0px;vertical-align:top;background-image:none;background-color:rgb(249,249,249);background-repeat:initial"><br></pre><pre style="font-family:monospace,monospace;font-size:14px;padding:0px;border:0px none white;line-height:1.2em;font-stretch:normal;margin-top:0px;margin-bottom:0px;vertical-align:top;background-image:none;background-color:rgb(249,249,249);background-repeat:initial"><font color="#0000ff">Thanks in advance and with my best regards</font></pre><pre style="font-family:monospace,monospace;font-size:14px;padding:0px;border:0px none white;line-height:1.2em;font-stretch:normal;margin-top:0px;margin-bottom:0px;vertical-align:top;background-image:none;background-color:rgb(249,249,249);background-repeat:initial"><font color="#0000ff">Guangming</font></pre><pre style="font-family:monospace,monospace;color:rgb(0,0,0);font-size:14px;padding:0px;border:0px none white;line-height:1.2em;font-stretch:normal;margin-top:0px;margin-bottom:0px;vertical-align:top;background-image:none;background-color:rgb(249,249,249);background-repeat:initial"><br></pre></div><div><div><div dir="ltr"><div><div dir="ltr"><font style="line-height:23.3240013122559px" face="arial, helvetica, sans-serif" color="#674ea7"><b><i>Guangming Zang (Alex)</i></b></font><div style="line-height:23.3240013122559px"><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:23.3240013122559px"><span style="font-family:arial;font-size:13px;line-height:20.0200004577637px"><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:23.3240013122559px"><span style="font-family:arial;font-size:13px;line-height:20.0200004577637px"><font color="#0b5394"><b><i><br></i></b></font></span></div><div style="line-height:23.3240013122559px"><span style="font-family:arial;font-size:13px;line-height:20.0200004577637px"><font color="#0b5394"><b><i><br></i></b></font></span></div><div style="line-height:23.3240013122559px"><br></div></div></div></div></div></div>
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