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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Dear Jon,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Thanks for your reply. I am looking for a filter which will remove all white objects containing less than a specified number of pixels, regardless of their
shape. I am not sure if morphological operations, which the filters you mentioned are using, will be fully successful as the result will also depend on the objects’ shape. Is there a way to ‘threshold’ objects based on their size (no. of pixels), possibly
even involving multiple filters?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Thanks & Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Ruturaj<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"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Jon Haitz Legarreta [mailto:jhlegarreta@vicomtech.org]
<br>
<b>Sent:</b> Tuesday, May 20, 2014 2:06 PM<br>
<b>To:</b> Girish, Gavaskar Ruturaj<br>
<b>Cc:</b> community@itk.org<br>
<b>Subject:</b> Re: [ITK] MATLAB bwareaopen() equivalent in ITK<o:p></o:p></span></p>
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<p class="MsoNormal">Dear Ruturaj,<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">binary math morphology filters [1] will be of help for this task. The itk::BinaryOpeningByReconstructionImageFilter [2] is probably the filter you are looking for.<o:p></o:p></p>
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<p class="MsoNormal">HTH,<br>
JON HAITZ<o:p></o:p></p>
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[1] <a href="http://www.itk.org/Doxygen/html/group__ITKBinaryMathematicalMorphology.html">
http://www.itk.org/Doxygen/html/group__ITKBinaryMathematicalMorphology.html</a><br>
[2] <a href="http://www.itk.org/Doxygen/html/classitk_1_1BinaryOpeningByReconstructionImageFilter.html">
http://www.itk.org/Doxygen/html/classitk_1_1BinaryOpeningByReconstructionImageFilter.html</a><o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><o:p> </o:p></p>
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<p class="MsoNormal">On 20 May 2014 10:09, Girish, Gavaskar Ruturaj <<a href="mailto:gavaskar.ruturaj.girish@philips.com" target="_blank">gavaskar.ruturaj.girish@philips.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Dear all,<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Is there a class in ITK which provides functionality to remove small white objects in a binary image, similar to the function
<span style="font-family:"Courier New"">bwareaopen()</span> in MATLAB? If not, how can this be done?<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Thanks & Regards,<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Ruturaj<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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