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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Hello,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I need to create <span class=SpellE>polydata</span>, from a
green colored area of a bitmap-<span class=GramE>image(</span>.bmp). I can
create <span class=SpellE>polydata</span> for the entire image, by the
following code. But how do I isolate the green cells in one <span class=SpellE>polydata</span>
<span class=SpellE>opject</span>?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>My code until now (Render and other graphics stuff created
else where):<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><span class=SpellE><span class=GramE><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>vtkBMPReader</span></font></span></span><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> *reader = <span
class=SpellE>vtkBMPReader::New</span>();<o:p></o:p></span></font></p>
<p class=MsoNormal><span class=GramE><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>reader</span></font></span><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>-><span
class=SpellE>SetFileName</span>("C:\\scan2Doutput\\bil016.bmp");<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><span class=SpellE><span class=GramE><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>vtkImageToPolyDataFilter</span></font></span></span><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> *i2pd = <span
class=SpellE>vtkImageToPolyDataFilter::New</span>();<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>i2pd-><span class=SpellE><span class=GramE>SetInput</span></span><span
class=GramE>(</span>reader-><span class=SpellE>GetOutput</span>());<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>i2pd-><span class=SpellE><span class=GramE>SetLookupTable</span></span><span
class=GramE>(</span>(<span class=SpellE>vtkScalarsToColors</span>*)reader-><span
class=SpellE>GetLookupTable</span>());<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>i2pd-><span class=GramE>SetColorModeToLinear256(</span>);<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>i2pd-><span class=SpellE><span class=GramE>SetOutputStyleToRunLength</span></span><span
class=GramE>(</span>);//<span class=SpellE>SetOutputStyleToPolygonalize</span>();<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>i2pd-><span class=SpellE><span class=GramE>SetError</span></span><span
class=GramE>(</span>0);<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>i2pd-><span class=SpellE><span class=GramE>DecimationOn</span></span><span
class=GramE>(</span>);<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>i2pd-><span class=SpellE><span class=GramE>SetDecimationError</span></span><span
class=GramE>(</span>200.0);<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>i2pd-><span class=SpellE><span class=GramE>SetSubImageSize</span></span><span
class=GramE>(</span>25);<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>// Need a triangle filter because the polygons are complex
and concave<o:p></o:p></span></font></p>
<p class=MsoNormal><span class=SpellE><span class=GramE><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>vtkTriangleFilter</span></font></span></span><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> *<span
class=SpellE>tf</span> = <span class=SpellE>vtkTriangleFilter::New</span>();<o:p></o:p></span></font></p>
<p class=MsoNormal><span class=SpellE><span class=GramE><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>tf</span></font></span></span><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>-><span
class=SpellE>SetInput</span>(i2pd-><span class=SpellE>GetOutput</span>());<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><span class=SpellE><span class=GramE><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>vtkPolyDataMapper</span></font></span></span><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> *<span
class=SpellE>mapper</span> = <span class=SpellE>vtkPolyDataMapper::New</span>();<o:p></o:p></span></font></p>
<p class=MsoNormal><span class=SpellE><span class=GramE><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>mapper</span></font></span></span><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>-><span
class=SpellE>SetInput</span>(<span class=SpellE>tf</span>-><span
class=SpellE>GetOutput</span>());<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><span class=SpellE><span class=GramE><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>vtkActor</span></font></span></span><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> *actor = <span
class=SpellE>vtkActor::New</span>();<o:p></o:p></span></font></p>
<p class=MsoNormal><span class=GramE><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>actor</span></font></span><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>-><span
class=SpellE>SetMapper</span>(<span class=SpellE>mapper</span>);<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>// <span class=GramE>Add</span> the actor to the <span
class=SpellE>renderer</span><o:p></o:p></span></font></p>
<p class=MsoNormal><span class=SpellE><span class=GramE><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>ren</span></font></span></span><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>-><span
class=SpellE>AddActor</span>(actor);<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Verdana><span style='font-size:
10.0pt;font-family:Verdana;color:navy;mso-no-proof:yes'>Best Regards</span></font><font
color=navy><span style='color:navy;mso-no-proof:yes'><o:p></o:p></span></font></p>
<p class=MsoNormal><b style='mso-bidi-font-weight:normal'><font size=2
color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy;font-weight:bold;mso-bidi-font-weight:normal;mso-no-proof:yes'><o:p> </o:p></span></font></b></p>
<p class=MsoNormal><b style='mso-bidi-font-weight:normal'><font size=2
color=navy face=Arial><span lang=DA style='font-size:10.0pt;font-family:Arial;
color:navy;mso-ansi-language:DA;font-weight:bold;mso-bidi-font-weight:normal;
mso-no-proof:yes'>Inropa ApS<span style='mso-tab-count:2'> </span></span></font></b><b
style='mso-bidi-font-weight:normal'><font color=navy><span lang=DA
style='color:navy;mso-ansi-language:DA;font-weight:bold;mso-bidi-font-weight:
normal;mso-no-proof:yes'><o:p></o:p></span></font></b></p>
<p class=MsoNormal><st1:PersonName><font size=2 color=navy face=Arial><span
lang=DA style='font-size:10.0pt;font-family:Arial;color:navy;mso-ansi-language:
DA;mso-no-proof:yes'>Thomas Sundgaard</span></font></st1:PersonName><font
size=2 color=navy face=Arial><span lang=DA style='font-size:10.0pt;font-family:
Arial;color:navy;mso-ansi-language:DA;mso-no-proof:yes'> Pedersen</span></font><font
color=navy><span lang=DA style='color:navy;mso-ansi-language:DA;mso-no-proof:
yes'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=DA
style='font-size:10.0pt;font-family:Arial;color:navy;mso-ansi-language:DA;
mso-no-proof:yes'>Bredgade 5</span></font><font color=navy><span lang=DA
style='color:navy;mso-ansi-language:DA;mso-no-proof:yes'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=DA
style='font-size:10.0pt;font-family:Arial;color:navy;mso-ansi-language:DA;
mso-no-proof:yes'>DK-9700 Brønderslev</span></font><font color=navy><span
lang=DA style='color:navy;mso-ansi-language:DA;mso-no-proof:yes'><o:p></o:p></span></font></p>
<p class=MsoNormal><st1:country-region><st1:place><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy;
mso-no-proof:yes'>Denmark</span></font></st1:place></st1:country-region><font
color=navy><span style='color:navy;mso-no-proof:yes'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
style='font-size:12.0pt;color:navy;mso-no-proof:yes'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy;mso-no-proof:yes'>Phone: +45 9646 1177</span></font><font
color=navy><span style='color:navy;mso-no-proof:yes'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy;mso-no-proof:yes'>E-mail: thomas@inropa.com</span></font><font
color=navy><span style='color:navy;mso-no-proof:yes'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial;mso-no-proof:yes'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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