<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:DengXian;
panose-1:2 1 6 0 3 1 1 1 1 1;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:"\@DengXian";
panose-1:2 1 6 0 3 1 1 1 1 1;}
@font-face
{font-family:"Lucida Console";
panose-1:2 11 6 9 4 5 4 2 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#0563C1;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:#954F72;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Calibri",sans-serif;
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri",sans-serif;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Hi Dear fellow ITK/SimpleITK developers,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I encountered a strange issue where the attached simple test image fails in M<span style='font-size:9.0pt;font-family:"Lucida Console"'>orphologicalWatershed filter.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Lucida Console"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Lucida Console"'>The following python code produces an image with all “1”s, using the attached input_inv.vtk file.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Lucida Console"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:9.0pt;font-family:"Lucida Console"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:9.0pt;font-family:"Lucida Console"'>Import SimpleITK as sitk<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:9.0pt;font-family:"Lucida Console"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:9.0pt;font-family:"Lucida Console"'>input_inv = sitk.ReadImage(“input_inv.vtk”)<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:9.0pt;font-family:"Lucida Console"'>input_watershed = sitk.MorphologicalWatershed(input_inv)<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:9.0pt;font-family:"Lucida Console"'>sitk.WriteImage(input_watershed, <span style='color:#BF0000'>"input_watershed.vtk"</span>)<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Lucida Console"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Lucida Console"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Lucida Console"'>For quick diagnosis, I attached the visualization of the input_inv.vtk file.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Lucida Console"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Lucida Console"'>Any suggestion will be greatly appreciated. Many thanks for your attention and help!<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Lucida Console"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Lucida Console"'>-Shawn<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Lucida Console"'>Independent Image Processing Consultant</span><o:p></o:p></p></div></body></html>