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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Hi<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><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Actually I do not need the world coordinates. What I need is called “Index”. Have you tried to use MITK? In MITK, if you select a point, then on the right bottom of the screen, information of that point like “world position”, “Index”, “pixel value” appears. As you know, seed point setting in ITK segmentation uses “Index”, not “world position”. Am I right?<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><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'>Xiaopeng<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 lang=ZH-CN style='font-size:10.0pt;font-family:宋体'>发件人</span></b><b><span style='font-size:10.0pt;font-family:宋体'>:</span></b><span style='font-size:10.0pt;font-family:宋体'> David Doria [mailto:daviddoria@gmail.com] <br><b><span lang=ZH-CN>发送时间</span>:</b> 2010</span><span lang=ZH-CN style='font-size:10.0pt;font-family:"Batang","serif"'>년</span><span style='font-size:10.0pt;font-family:宋体'> 11</span><span lang=ZH-CN style='font-size:10.0pt;font-family:"Batang","serif"'>월</span><span style='font-size:10.0pt;font-family:宋体'> 29</span><span lang=ZH-CN style='font-size:10.0pt;font-family:"Batang","serif"'>일</span><span lang=ZH-CN style='font-size:10.0pt;font-family:宋体'> </span><span lang=ZH-CN style='font-size:10.0pt;font-family:"Batang","serif"'>월요일</span><span lang=ZH-CN style='font-size:10.0pt;font-family:宋体'> </span><span lang=ZH-CN style='font-size:10.0pt;font-family:"Batang","serif"'>오후</span><span style='font-size:10.0pt;font-family:宋体'> 11:58<br><b><span lang=ZH-CN>收件人</span>:</b> yxp233@postech.ac.kr<br><b><span lang=ZH-CN>抄送</span>:</b> vtkusers@vtk.org; insight-users@itk.org<br><b><span lang=ZH-CN>主题</span>:</b> Re: [Insight-users] Get the selection point in screen (pixel) coordinates<o:p></o:p></span></p></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>2010/11/29 Xiaopeng Yang <<a href="mailto:yxp233@postech.ac.kr">yxp233@postech.ac.kr</a>><o:p></o:p></p><div><div><p class=MsoNormal>Please help me. I really need your help!<o:p></o:p></p></div></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal>I think screen coordinates will always have a z coordinate value of 0. Try getting the picked point in world coordinates. This is probably what you want anyway, right? If you get the picked point in screen coordinates, if you translate the object and then pick the "same" point, you will get a different value. I doubt this is what you want.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>David <o:p></o:p></p></div></div></div></body></html>