<div dir="ltr"><div class="markdown-here-wrapper" style="font-family:"Lucida Sans",Cantarell,Verdana,sans-serif;color:rgb(11,83,148)"><p style="margin:0px 0px 1.2em!important">Hi Simon,</p>
<p style="margin:0px 0px 1.2em!important">This MR just implements the flag for clipping but it should be simple to extend it to cropping as well. </p>
<p style="margin:0px 0px 1.2em!important">Thanks,<br>Sankhesh</p>
<div title="MDH:SGkgU2ltb24sPGRpdj48YnI+PC9kaXY+PGRpdj5UaGlzIE1SIGp1c3QgaW1wbGVtZW50cyB0aGUg
ZmxhZyBmb3IgY2xpcHBpbmcgYnV0IGl0IHNob3VsZCBiZSBzaW1wbGUgdG8gZXh0ZW5kIGl0IHRv
IGNyb3BwaW5nIGFzIHdlbGwuJm5ic3A7PC9kaXY+PGRpdj48YnI+PC9kaXY+PGRpdj5UaGFua3Ms
PC9kaXY+PGRpdj5TYW5raGVzaDwvZGl2Pg==" style="height:0;width:0;max-height:0;max-width:0;overflow:hidden;font-size:0em;padding:0;margin:0">​</div></div></div><br><div class="gmail_quote"><div dir="ltr">On Mon, Sep 3, 2018 at 4:11 AM Simon Esneault <<a href="mailto:simon.esneault@gmail.com">simon.esneault@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div dir="ltr">+1 for this feature, this will be of great help for us too !<br><br>The same "rough" effect is visible along the faces of the bounding box of the volume, will this improvement works when we use the SetCroppingRegionPlanes( ... ) method of the GPUVolumeMapper, ie without using clipping planes but "CroppingRegionPlanes" ?<br><br>Thanks !<br>Simon<br></div></div><br><div class="gmail_quote"></div><div class="gmail_quote"><div dir="ltr">Le mer. 29 août 2018 à 15:52, Andras Lasso <<a href="mailto:lasso@queensu.ca" target="_blank">lasso@queensu.ca</a>> a écrit :<br></div></div><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">





<div lang="EN-US" link="blue" vlink="purple">
<div class="m_-311949945767465966m_5339089100730225392m_-6223600407584368477WordSection1">
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">This is awesome! Thanks a lot for implementing this. It will greatly improve clipped volume visualization.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Andras<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Sankhesh Jhaveri <<a href="mailto:sankhesh.jhaveri@kitware.com" target="_blank">sankhesh.jhaveri@kitware.com</a>>
<br>
<b>Sent:</b> Wednesday, August 29, 2018 9:49 AM<br>
<b>To:</b> Andras Lasso <<a href="mailto:lasso@queensu.ca" target="_blank">lasso@queensu.ca</a>><br>
<b>Cc:</b> <a href="mailto:vtkusers@vtk.org" target="_blank">vtkusers@vtk.org</a><br>
<b>Subject:</b> Re: [vtkusers] Volume rendering produces rough surface at clipping plane<u></u><u></u></span></p>
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<div>
<p><span style="font-family:"Lucida Sans",sans-serif;color:#0b5394">Hi Andras,<u></u><u></u></span></p>
<p style="margin:1.2em!important"><span style="font-family:"Lucida Sans",sans-serif;color:#0b5394"><a href="https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgitlab.kitware.com%2Fvtk%2Fvtk%2Fmerge_requests%2F4627&data=02%7C01%7Classo%40queensu.ca%7C1b0e2ad2d9874241678b08d60db63cd7%7Cd61ecb3b38b142d582c4efb2838b925c%7C1%7C0%7C636711473694883358&sdata=9QSPhtudVqpDJdcEPxqZWO9hV0iqEG%2Fmt58KwRe9w8I%3D&reserved=0" target="_blank">!4627</a>
 implements a mode in </span><code><span style="font-size:11.5pt;font-family:Consolas;color:#0b5394;border:solid #dadada 1.0pt;padding:0in;background:#e8e8e8">vtkVolumeProperty</span></code><span style="font-family:"Lucida Sans",sans-serif;color:#0b5394"> that
 lets you use custom intensity values for voxels in the clipped space when computing gradients at the clip face.<u></u><u></u></span></p>
<p style="margin:1.2em!important"><span style="font-family:"Lucida Sans",sans-serif;color:#0b5394">Best,<br>
Sankhesh<u></u><u></u></span></p>
<div>
<p class="MsoNormal"><span style="font-size:1.0pt;font-family:"Arial",sans-serif;color:#0b5394">​</span><span style="font-size:1.0pt;font-family:"Lucida Sans",sans-serif;color:#0b5394"><u></u><u></u></span></p>
</div>
</div>
</div>
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<div>
<p class="MsoNormal">On Fri, Nov 3, 2017 at 10:48 AM Andras Lasso <<a href="mailto:lasso@queensu.ca" target="_blank">lasso@queensu.ca</a>> wrote:<u></u><u></u></p>
</div>
<blockquote style="border:none;border-left:solid #cccccc 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in">
<div>
<div>
<p class="MsoNormal">Hi all,<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">I’m working on visualizing cardiac images using volume rendering. I need to cut into the volume to see surfaces inside the heart, which works quite well by using clipping planes
 of the volume mapper. The only problem is that that surface at the cut plane looks very rough, which makes it difficult to distinguish from actual endocardial surfaces. If I “cut” the volume by setting voxel values outside the clipping box to “empty” (-1000
 = air intensity value) then the cut surface looks nice – smooth and flat. See example for both cutting method in the attached files.
<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">Is there a way to change volume renderer to get smooth cut surfaces (the same look as we get by setting outside voxels to “empty” values)?<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">Andras<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">---<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">See full resolution images and more examples here:<u></u><u></u></p>
<p class="MsoNormal"><a href="https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2F1drv.ms%2Ff%2Fs!Arm_AFxB9yqHsOsClG_QsMx-4sh8rg&data=02%7C01%7Classo%40queensu.ca%7C1b0e2ad2d9874241678b08d60db63cd7%7Cd61ecb3b38b142d582c4efb2838b925c%7C1%7C0%7C636711473694883358&sdata=Kv2zau7vHuPxMEosN89SF1IGYjCwCKQk0lrngO9Tnzg%3D&reserved=0" target="_blank">https://1drv.ms/f/s!Arm_AFxB9yqHsOsClG_QsMx-4sh8rg</a><u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">CT volume can be downloaded from here:<u></u><u></u></p>
<p class="MsoNormal"><a href="https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fslicer.kitware.com%2Fmidas3%2Fdownload%2Fitem%2F292309%2FCTA-cardio.nrrd&data=02%7C01%7Classo%40queensu.ca%7C1b0e2ad2d9874241678b08d60db63cd7%7Cd61ecb3b38b142d582c4efb2838b925c%7C1%7C0%7C636711473694893363&sdata=atKizvUvC92hjztLus1b6ybp8OrwZJh6%2B599fLLctbU%3D&reserved=0" target="_blank">http://slicer.kitware.com/midas3/download/item/292309/CTA-cardio.nrrd</a><u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:8.0pt;color:#595959">________________________</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:8.0pt;color:#595959">Andras Lasso, PhD</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:8.0pt;color:#595959">Senior Research Engineer, Associate Director (Engineering)</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:8.0pt;color:#595959">Laboratory for Percutaneous Surgery</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:8.0pt;color:#595959">School of Computing, Queen's University</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:8.0pt;color:#595959">Kingston, ON, Canada</span><u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
</div>
</div>
<p class="MsoNormal">_______________________________________________<br>
Powered by <a href="https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.kitware.com&data=02%7C01%7Classo%40queensu.ca%7C1b0e2ad2d9874241678b08d60db63cd7%7Cd61ecb3b38b142d582c4efb2838b925c%7C1%7C0%7C636711473694893363&sdata=ZRfjX2PMLuebTLfEAI6BAwlcJJfS6pcq9XD7FZ13orU%3D&reserved=0" target="_blank">
www.kitware.com</a><br>
<br>
Visit other Kitware open-source projects at <a href="https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.kitware.com%2Fopensource%2Fopensource.html&data=02%7C01%7Classo%40queensu.ca%7C1b0e2ad2d9874241678b08d60db63cd7%7Cd61ecb3b38b142d582c4efb2838b925c%7C1%7C0%7C636711473694903376&sdata=XJBH963yUgggk7W0IrZ9QlvSu11RcSUG%2FRcfMdU7DFs%3D&reserved=0" target="_blank">
http://www.kitware.com/opensource/opensource.html</a><br>
<br>
Please keep messages on-topic and check the VTK FAQ at: <a href="https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.vtk.org%2FWiki%2FVTK_FAQ&data=02%7C01%7Classo%40queensu.ca%7C1b0e2ad2d9874241678b08d60db63cd7%7Cd61ecb3b38b142d582c4efb2838b925c%7C1%7C0%7C636711473694903376&sdata=pDypE3JBYa%2FB%2Foc%2BJXo7GQ%2Bgg4uUexo5jNlMZwRASpE%3D&reserved=0" target="_blank">
http://www.vtk.org/Wiki/VTK_FAQ</a><br>
<br>
Search the list archives at: <a href="https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmarkmail.org%2Fsearch%2F%3Fq%3Dvtkusers&data=02%7C01%7Classo%40queensu.ca%7C1b0e2ad2d9874241678b08d60db63cd7%7Cd61ecb3b38b142d582c4efb2838b925c%7C1%7C0%7C636711473694913376&sdata=zglxMXZOb8qtwFhuQa9pp3SUnyX3xPHz4BN1rIOvk4s%3D&reserved=0" target="_blank">
http://markmail.org/search/?q=vtkusers</a><br>
<br>
Follow this link to subscribe/unsubscribe:<br>
<a href="https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fpublic.kitware.com%2Fmailman%2Flistinfo%2Fvtkusers&data=02%7C01%7Classo%40queensu.ca%7C1b0e2ad2d9874241678b08d60db63cd7%7Cd61ecb3b38b142d582c4efb2838b925c%7C1%7C0%7C636711473694913376&sdata=390T8zwwdAIGas8hHZxmOhQZMnsVEZAfnqchhT6NVZ4%3D&reserved=0" target="_blank">http://public.kitware.com/mailman/listinfo/vtkusers</a><u></u><u></u></p>
</blockquote>
</div>
<p class="MsoNormal">-- <u></u><u></u></p>
<div>
<div>
<div>
<div style="border:none;border-bottom:solid #eeeeee 1.0pt;padding:0in 0in 0in 0in">
<h5 style="margin-right:0in;margin-bottom:12.0pt;margin-left:0in;border:none;padding:0in">
<span style="font-size:13.0pt;font-family:"Arial",sans-serif;color:#0b4194">Sankhesh Jhaveri<u></u><u></u></span></h5>
</div>
<h6 style="margin-right:0in;margin-bottom:12.0pt;margin-left:0in" id="m_-311949945767465966m_5339089100730225392m_-6223600407584368477inbox-inbox-inbox-inbox-inbox-inbox-inbox-inbox--sr-research-development-engineer-kitware-http-www-kitware-com-518-881-4417">
<em><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:#0b5394;font-weight:normal">Sr. Research & Development Engineer</span></em><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:#0b5394;font-weight:normal"> |
<a href="https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.kitware.com%2F&data=02%7C01%7Classo%40queensu.ca%7C1b0e2ad2d9874241678b08d60db63cd7%7Cd61ecb3b38b142d582c4efb2838b925c%7C1%7C0%7C636711473694923385&sdata=xG1z%2FYjSiFip4mRTr7C%2FjGrQgt2by0Ndw1H20yKomSU%3D&reserved=0" target="_blank">
Kitware</a> | <a href="tel:(518)%20881-4417" value="+15188814417" target="_blank">(518) 881-4417</a><u></u><u></u></span></h6>
<div>
<p class="MsoNormal"><span style="font-size:1.0pt;font-family:"Arial",sans-serif;color:#00386b">​<u></u><u></u></span></p>
</div>
</div>
</div>
</div>
</div>
</div>

_______________________________________________<br>
Powered by <a href="http://www.kitware.com" rel="noreferrer" target="_blank">www.kitware.com</a><br>
<br>
Visit other Kitware open-source projects at <a href="http://www.kitware.com/opensource/opensource.html" rel="noreferrer" target="_blank">http://www.kitware.com/opensource/opensource.html</a><br>
<br>
Please keep messages on-topic and check the VTK FAQ at: <a href="http://www.vtk.org/Wiki/VTK_FAQ" rel="noreferrer" target="_blank">http://www.vtk.org/Wiki/VTK_FAQ</a><br>
<br>
Search the list archives at: <a href="http://markmail.org/search/?q=vtkusers" rel="noreferrer" target="_blank">http://markmail.org/search/?q=vtkusers</a><br>
<br>
Follow this link to subscribe/unsubscribe:<br>
</blockquote></div><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><a href="https://public.kitware.com/mailman/listinfo/vtkusers" rel="noreferrer" target="_blank">https://public.kitware.com/mailman/listinfo/vtkusers</a><br>
</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="m_-311949945767465966m_5339089100730225392gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div>------------------------------------------------------------------<br>Simon Esneault<div>Rennes, France<br>------------------------------------------------------------------</div></div></div></div>
</blockquote></div>-- <br><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div class="inbox-inbox-inbox-inbox-inbox-inbox-inbox-inbox-markdown-here-wrapper" style="font-family:"proza libre",sans-serif;color:rgb(0,56,107)"><h5 id="inbox-inbox-inbox-inbox-inbox-inbox-inbox-inbox-sankhesh-jhaveri" style="margin:1.3em 0px 1em;padding:0px;font-size:1.1em;border-bottom:1px solid rgb(238,238,238);font-weight:bold;color:rgb(11,65,148)">Sankhesh Jhaveri</h5>
<h6 id="inbox-inbox-inbox-inbox-inbox-inbox-inbox-inbox--sr-research-development-engineer-kitware-http-www-kitware-com-518-881-4417" style="margin:1.3em 0px 1em;padding:0px;font-size:1em;color:rgb(11,83,148);font-family:"open sans",sans-serif;font-weight:normal"><em>Sr. Research & Development Engineer</em> | <a href="http://www.kitware.com/">Kitware</a> | (518) 881-4417</h6>
<div title="MDH:PGIgc3R5bGU9ImZvbnQtZmFtaWx5OiB2ZXJkYW5hLCBzYW5zLXNlcmlmOyBjb2xvcjogcmdiKDEx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" style="height:0px;width:0px;max-height:0px;max-width:0px;overflow:hidden;font-size:0em;padding:0px;margin:0px">​</div></div></div></div>