<HTML><BODY style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; "><DIV>Dear all,</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>As previously stated we need a good solution to synchronization, (data/viz) management and slicing (presented in 2D and 3D views) in order to be able to introduce the first application based on IGSTK into the OR.</DIV><DIV>We have been looking into vtkInria3D, vtkImagePlaneWidget/vtkImageOrthoPlanes ++ as suggested by the team.</DIV><DIV>The vtkInria3D library offers many of the solutions that we seek for "overall coordination" within an application.</DIV><DIV>We strongly feel that similar functionality should be part of IGSTK: this is functionality that is needed in almost all real IGS apps. and should therefore be done the right way once an for all instead of forcing each app. developer to reinvent the wheel every time (there are both "ease of use" and safety aspects to this).</DIV><DIV>I know that there are a lot of other IGSTK things going on right now, but we (i.e. Torleif) will have to start working on this now and it would be nice to have the teams view on the best approach:</DIV><DIV>1) vtkImagePlaneWidget / vtkImageOrthoPlanes (3D view) + ImageSliceRep.(2D view) based on grabbing the pixels from the different vtkImagePlaneWidget + </DIV><DIV>and Observer sync. (see mail from Luis below).</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>2) vtkInria3D: Borrow, adapt or integrate...</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>3) Something else (Patrics' new ObliqueImageSliceRep? ++)</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>Maybe we could use a little bit of the next Tcon time on this.</DIV><DIV>In that case it would be nice if people looked at the vtkINRIA3D paper beforehand,</DIV><DIV>focusing more on the functonality it offers than the way it's implemented (at this stage):</DIV><DIV><A href="http://insight-journal.org/dspace/handle/1926/559">http://insight-journal.org/dspace/handle/1926/559</A></DIV><DIV><A href="http://www-sop.inria.fr/asclepios/software/vtkINRIA3D/">http://www-sop.inria.fr/asclepios/software/vtkINRIA3D/</A></DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>Thanks.</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>- Frank</DIV><DIV><BR class="khtml-block-placeholder"></DIV><BR><DIV><DIV>On Aug 17, 2007, at 6:16 PM, Luis Ibanez wrote:</DIV><BR class="Apple-interchange-newline"><BLOCKQUOTE type="cite"><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Hi Torleif,</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Thanks for taking a look at the VTK image widgets.</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">1) I agree with you that the Axial, Coronal, Sagittal</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><SPAN class="Apple-converted-space"> </SPAN>views should not rotate. This shouldn't be a problem</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><SPAN class="Apple-converted-space"> </SPAN>since, presumably, you will use View2D classes for</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><SPAN class="Apple-converted-space"> </SPAN>those windows, and therefore the mouse interactions</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><SPAN class="Apple-converted-space"> </SPAN>for rotation will already be disabled.</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">2) Currently the vtkImagePlaneWidget always disable the</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><SPAN class="Apple-converted-space"> </SPAN>cross hair when the left mouse button is released.</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><SPAN class="Apple-converted-space"> </SPAN>We could derive from this class, overload the method</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><SPAN class="Apple-converted-space"> </SPAN>StopCursor() and modify it to not call ActivateCursor(0)</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><SPAN class="Apple-converted-space"> </SPAN>and ActivateText(0).<SPAN class="Apple-converted-space"> </SPAN>That should keep the latest</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><SPAN class="Apple-converted-space"> </SPAN>position of the cross hair in the widget.</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">3) Regarding the synchronization. We will still need an</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><SPAN class="Apple-converted-space"> </SPAN>extra class for it. Something along the lines of an</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><SPAN class="Apple-converted-space"> </SPAN>Observer that listens to the N instances of the planes,</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><SPAN class="Apple-converted-space"> </SPAN>and dispatch messages to all of them would probably</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><SPAN class="Apple-converted-space"> </SPAN>do the trick.</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">4) I'm wondering if this should simply be added as</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><SPAN class="Apple-converted-space"> </SPAN>a functionality to the current ImageSpatialObject</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><SPAN class="Apple-converted-space"> </SPAN>Representation class...</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><SPAN class="Apple-converted-space"> </SPAN>Luis</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">-------------------------</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Torleif Sandnes wrote:</DIV> <BLOCKQUOTE type="cite"><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">On Jul 12, 2007, at 4:46 AM, Luis Ibanez wrote:</DIV> <BLOCKQUOTE type="cite"><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">As we discussed during the tcon,</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">it may be useful to look at the following VTK classes:</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><SPAN class="Apple-converted-space"> </SPAN>vtkImagePlaneWidget</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><SPAN class="Apple-converted-space"> </SPAN>vtkImageOrthoPlanes</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><SPAN class="Apple-converted-space"> </SPAN><A href="http://www.vtk.org/doc/nightly/html/classvtkImagePlaneWidget.html">http://www.vtk.org/doc/nightly/html/classvtkImagePlaneWidget.html</A></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><SPAN class="Apple-converted-space"> </SPAN><A href="http://www.vtk.org/doc/nightly/html/classvtkImageOrthoPlanes.html">http://www.vtk.org/doc/nightly/html/classvtkImageOrthoPlanes.html</A></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">in order to gather feedback for the Cross Hairs class.</DIV> </BLOCKQUOTE><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Thanks for the pointers.</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">I have experimented with vtkImagePlaneWidget and it looks good except<SPAN class="Apple-converted-space"> </SPAN>for a few things:</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">1. I don't want the user to be able to rotate the plane. the acs view<SPAN class="Apple-converted-space"> </SPAN>should be entirely 2D</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">2. I want the crosshair indicating position to be present at all times.</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">The drawback with vtkImageOrthoPlanes is that it isn't able to<SPAN class="Apple-converted-space"> </SPAN>synchronize a 3D view in addition to three 2D views.</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">I had a look at vtkInria3D as Ziv suggested and the synchronizedviews<SPAN class="Apple-converted-space"> </SPAN>example. This is exactly what I wanted in my application. I think<SPAN class="Apple-converted-space"> </SPAN>something like the vtkImageView/2D/3D should be a part of igstk.<SPAN class="Apple-converted-space"> </SPAN>While I agree with you that synchronization should occur between<SPAN class="Apple-converted-space"> </SPAN>representations and not views, I strongly believe that functionality<SPAN class="Apple-converted-space"> </SPAN>like this in some form is something that will be needed over and over<SPAN class="Apple-converted-space"> </SPAN>again in IGS applications.</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">I guess you get the general idea from the attached screenshot: an<SPAN class="Apple-converted-space"> </SPAN>axis indicates position and position is updated in all four views.<SPAN class="Apple-converted-space"> </SPAN>position, window level/width slize and zoom can be synchronized.</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">What do you think?</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">------------------------------------------------------------------------</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Regards,</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Torleif</DIV> </BLOCKQUOTE><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">_______________________________________________</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">IGSTK-Developers mailing list</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><A href="mailto:IGSTK-Developers@public.kitware.com">IGSTK-Developers@public.kitware.com</A></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><A href="http://public.kitware.com/cgi-bin/mailman/listinfo/igstk-developers">http://public.kitware.com/cgi-bin/mailman/listinfo/igstk-developers</A></DIV> </BLOCKQUOTE></DIV><BR><DIV> <SPAN class="Apple-style-span" style="border-collapse: separate; 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"><FONT class="Apple-style-span" color="#696969" face="Helvetica Neue" size="3"><SPAN class="Apple-style-span" style="font-size: 11px;; color: rgb(105, 105, 105); font-family: Helvetica Neue; "><SPAN class="Apple-style-span" style="color: rgb(105, 105, 105); font-family: Helvetica Neue; font-size: 11px; "><SPAN class="Apple-style-span" style="color: rgb(105, 105, 105); font-family: Helvetica Neue; font-size: 11px; ">E-mail: </SPAN></SPAN></SPAN></FONT><FONT class="Apple-style-span" color="#0020E3" face="Helvetica Neue" size="3"><SPAN class="Apple-style-span" style="font-size: 11px; text-decoration: underline;; color: rgb(0, 32, 227); font-family: Helvetica Neue; -khtml-text-decorations-in-effect: underline; "><SPAN class="Apple-style-span" style="color: rgb(0, 32, 227); font-family: Helvetica Neue; font-size: 11px; -khtml-text-decorations-in-effect: underline; "><SPAN class="Apple-style-span" style="color: rgb(0, 32, 227); font-family: Helvetica Neue; font-size: 11px; -khtml-text-decorations-in-effect: underline; ">Frank.Lindseth</SPAN></SPAN></SPAN></FONT><A href="mailto:thomas.lango@sintef.no"><FONT class="Apple-style-span" color="#0020E3" face="Helvetica Neue" size="3"><SPAN class="Apple-style-span" style="font-size: 11px;; color: rgb(0, 32, 227); font-family: Helvetica Neue; -khtml-text-decorations-in-effect: underline; "><SPAN class="Apple-style-span" style="color: rgb(0, 32, 227); font-family: Helvetica Neue; font-size: 11px; -khtml-text-decorations-in-effect: underline; "><SPAN class="Apple-style-span" style="color: rgb(0, 32, 227); font-family: Helvetica Neue; font-size: 11px; -khtml-text-decorations-in-effect: underline; ">@sintef.no</SPAN></SPAN></SPAN></FONT></A></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><FONT class="Apple-style-span" color="#696969" face="Helvetica Neue" size="3"><SPAN class="Apple-style-span" style="font-size: 11px;; color: rgb(105, 105, 105); font-family: Helvetica Neue; "><SPAN class="Apple-style-span" style="color: rgb(105, 105, 105); font-family: Helvetica Neue; font-size: 11px; "><SPAN class="Apple-style-span" style="color: rgb(105, 105, 105); font-family: Helvetica Neue; font-size: 11px; "><SPAN class="Apple-style-span" style="color: rgb(105, 105, 105); font-family: Helvetica Neue; font-size: 11px; "><SPAN class="Apple-style-span" style="color: rgb(105, 105, 105); font-family: Helvetica Neue; font-size: 11px; "><SPAN class="Apple-style-span" style="color: rgb(105, 105, 105); font-family: Helvetica Neue; font-size: 11px; ">Telephone: +47 928 09 372</SPAN></SPAN></SPAN></SPAN></SPAN></SPAN></FONT></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><FONT class="Apple-style-span" color="#696969" face="Helvetica Neue" size="3"><SPAN class="Apple-style-span" style="font-size: 11px;; color: rgb(105, 105, 105); font-family: Helvetica Neue; "><SPAN class="Apple-style-span" style="color: rgb(105, 105, 105); font-family: Helvetica Neue; font-size: 11px; "><SPAN class="Apple-style-span" style="color: rgb(105, 105, 105); font-family: Helvetica Neue; font-size: 11px; "><SPAN class="Apple-style-span" style="color: rgb(105, 105, 105); font-family: Helvetica Neue; font-size: 11px; "><SPAN class="Apple-style-span" style="color: rgb(105, 105, 105); font-family: Helvetica Neue; font-size: 11px; "><SPAN class="Apple-style-span" style="color: rgb(105, 105, 105); font-family: Helvetica Neue; font-size: 11px; ">Telefax: +47 930 70 800</SPAN></SPAN></SPAN></SPAN></SPAN></SPAN></FONT></DIV><BR class="Apple-interchange-newline"></SPAN></SPAN></SPAN></SPAN></SPAN> </DIV><BR></BODY></HTML>