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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hi Karthik,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>How are you doing? I guess you may have an answer for the following problem I met recently. Could you please give me a hand? Thank you very much!<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Previously I used vtkImageViewer2 and vtkKWPaintbrush to show an original CT image overlapped with a mask image to edit the mask image. It worked perfectly. <o:p></o:p></p><p class=MsoNormal>However, when I change vtkImageViewer2 to vtkViewImage2D, the mask image does not appear over the CT image.<o:p></o:p></p><p class=MsoNormal>I am wondering whether vtkViewImage2D is compatible with vtkKWEPaintbrush?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I checked the code and found that the difference comes from GetImageActor. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:9.0pt;font-family:NSimSun'> vtkKWEPaintbrushRepresentation2D * rep =<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:9.0pt;font-family:NSimSun'> vtkKWEPaintbrushRepresentation2D::SafeDownCast(w->GetRepresentation());<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:9.0pt;font-family:NSimSun'> <span style='color:blue'>if</span> (rep)<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:9.0pt;font-family:NSimSun'> {<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:9.0pt;font-family:NSimSun'> rep->SetImageActor( <b><span style='color:red'>imageView->GetImageActor()</span></b> );<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:9.0pt;font-family:NSimSun'> </span><span style='font-size:9.0pt'>…</span><span style='font-size:9.0pt;font-family:NSimSun'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:9.0pt;font-family:NSimSun'> }<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:9.0pt;font-family:NSimSun'><o:p> </o:p></span></p><p class=MsoNormal>If imageView is vtkImageViewer2, it works fine. If imageView is vtkViewImage2D, the mask image does not appear at all.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thank you very much for your help!<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Best regards,<o:p></o:p></p><p class=MsoNormal>Xiaopeng<o:p></o:p></p></div></body></html>