<html><head></head><body><div style="color:#000; background-color:#fff; font-family:Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yui_3_16_0_ym19_1_1522170824541_9502"><br></div><div class="qtdSeparateBR" id="yui_3_16_0_ym19_1_1522170824541_9503"><div id="yui_3_16_0_ym19_1_1522170824541_10731">Dear All</div><div id="yui_3_16_0_ym19_1_1522170824541_10731"><br></div><div id="yui_3_16_0_ym19_1_1522170824541_10731">(I have emailed separately Bill Schroeder at Kitware)</div><div id="yui_3_16_0_ym19_1_1522170824541_10734"><br id="yui_3_16_0_ym19_1_1522170824541_10735"></div><div id="yui_3_16_0_ym19_1_1522170824541_10736">I am very happy that ITK Toolkit has been thriving over so many years. Kitware has done amazing job to maintain it and to expand it.</div><div id="yui_3_16_0_ym19_1_1522170824541_10737"><br id="yui_3_16_0_ym19_1_1522170824541_10738"></div><div id="yui_3_16_0_ym19_1_1522170824541_10739">Still, I am trying to contact the main co-authors of the currect ITK Software Guide.</div><div id="yui_3_16_0_ym19_1_1522170824541_10740"><br id="yui_3_16_0_ym19_1_1522170824541_10741"></div><div id="yui_3_16_0_ym19_1_1522170824541_10742">I am writing about the usage of "Voronoi Region" terminology in the recent editions of the ITK Software guide - that is very odd and not in agreement with how Voronoi Diagram, that is one of the fundamental geometric structures, is defined:</div><div id="yui_3_16_0_ym19_1_1522170824541_10743"><a href="https://www.cs.ucsb.edu/~suri/cs235/Voronoi.pdf" id="yui_3_16_0_ym19_1_1522170824541_10790">https://www.cs.ucsb.edu/~suri/cs235/Voronoi.pdf</a></div><div id="yui_3_16_0_ym19_1_1522170824541_10743"><br></div><div id="yui_3_16_0_ym19_1_1522170824541_10744"><br id="yui_3_16_0_ym19_1_1522170824541_10745"></div><div id="yui_3_16_0_ym19_1_1522170824541_10746">Could you please email me - I would like to suggest that if we want to use as "geometrical concepts associated with the ITK image" "Voronoi region" in a form what I consider a degenerative representation of it - then maybe it would be wise to name it differently. Not to mention the usage of another oddity: Delaunay Region - what is it? Voronoi Diagram and its dual, Delaunay Triangulation are classic geometric constructs that require that the points, in the Voronoi diagram, the Voronoi points, satisfy:</div><div id="yui_3_16_0_ym19_1_1522170824541_10747"><br id="yui_3_16_0_ym19_1_1522170824541_10748"></div><div id="yui_3_16_0_ym19_1_1522170824541_10749">"Non-degeneracy Condition: Assume no 4 cocircular points, and no 3 collinear."</div><div id="yui_3_16_0_ym19_1_1522170824541_10750"><br id="yui_3_16_0_ym19_1_1522170824541_10751"></div><div id="yui_3_16_0_ym19_1_1522170824541_10752">This is violated in the construct included in the Guide and referred to as Voronoi Region and Delaunay Region.</div><div id="yui_3_16_0_ym19_1_1522170824541_10753"><br id="yui_3_16_0_ym19_1_1522170824541_10754"></div><div id="yui_3_16_0_ym19_1_1522170824541_10755">I don't mind that the guide is not including any more my original hybrid segmentation contribution that included Voronoi Diagram classification </div><div id="yui_3_16_0_ym19_1_1522170824541_10756">https://core.ac.uk/download/pdf/27299860.pdf</div><div id="yui_3_16_0_ym19_1_1522170824541_10757">I woudl like to ask you to discuss what can be done with possibly correctingthe odd terminology,</div><div id="yui_3_16_0_ym19_1_1522170824541_10758"><br id="yui_3_16_0_ym19_1_1522170824541_10759"></div><div id="yui_3_16_0_ym19_1_1522170824541_10760">looking forward to hear from </div><div id="yui_3_16_0_ym19_1_1522170824541_10761"><br id="yui_3_16_0_ym19_1_1522170824541_10762"></div><div id="yui_3_16_0_ym19_1_1522170824541_10763">Best Regards,</div><div id="yui_3_16_0_ym19_1_1522170824541_10764"><br id="yui_3_16_0_ym19_1_1522170824541_10765"></div><div id="yui_3_16_0_ym19_1_1522170824541_10766">Celina Imielinska</div><div id="yui_3_16_0_ym19_1_1522170824541_10767"><br id="yui_3_16_0_ym19_1_1522170824541_10768"></div><div id="yui_3_16_0_ym19_1_1522170824541_10769">Celina Imielinska, PhD</div><div id="yui_3_16_0_ym19_1_1522170824541_10770">Principal</div><div id="yui_3_16_0_ym19_1_1522170824541_10771">Vesalius Technologies LLC</div><div id="yui_3_16_0_ym19_1_1522170824541_10772">Princeton NJ</div><div id="yui_3_16_0_ym19_1_1522170824541_10773">celina_imielinska@yahoo.com</div><div dir="ltr" id="yui_3_16_0_ym19_1_1522170824541_10774">609 240 4721</div><div dir="ltr" id="yui_3_16_0_ym19_1_1522170824541_10774"><br></div><div dir="ltr" id="yui_3_16_0_ym19_1_1522170824541_10774">PS. old version <a href="http://www.sci.utah.edu/publications/ibanez03/ItkSoftwareGuide.pdf" id="yui_3_16_0_ym19_1_1522170824541_11972">http://www.sci.utah.edu/publications/ibanez03/ItkSoftwareGuide.pdf</a></div><div dir="ltr" id="yui_3_16_0_ym19_1_1522170824541_10774"> newest <a href="https://itk.org/ItkSoftwareGuide.pdf">https://itk.org/ItkSoftwareGuide.pdf</a></div></div></div></body></html>