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Segmentation using morphology

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Segmentation of locally darker somewhat circular regions using a morphology based method

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This simple method can be used to segment locally darker regions in a grayscale image that have a somewhat circular appearance.
demo.m performs a segmentation on the example image recon_test.png.

The method has been used in medical imaging as part of an airway segmentation method to extract the 3D airways. See http://www.lungworkshop.org/2009/proc2009/297.pdf for details of the full method and http://image.diku.dk/exact/exact_team_result.php?team_id=15 for results.

Comments and Ratings (4)

wang wang

Benjamin I

Benjamin I (view profile)

@ debasmita bhoumik,

The easiest option would be to invert your image before performing the segmentation.

Something like:
Inew = max(I(:)) - I

This method is for " segment locally darker regions in a grayscale image that have a somewhat circular appearance. "

I want to segment locally lighter region.. what should i do (i am a very beginner student in matlab)

please I want matalab program to cut ROI from dicom image

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