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Segmentation using morphology

  • reconfilt(I, thresh_val, ...
    A function to segment circular locally darker regions in a grayscale image.
  • demo.m
    Segmentation by morphological closing and reconstruction
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4.5 | 2 ratings Rate this file 10 Downloads (last 30 days) File Size: 67.4 KB File ID: #41799 Version: 1.1
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Segmentation using morphology

by

Benjamin I (view profile)

 

20 May 2013 (Updated )

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

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Description

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.

Required Products Image Processing Toolbox
MATLAB release MATLAB 8.0 (R2012b)
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Comments and Ratings (3)
06 Apr 2016 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

Comment only
27 Mar 2016 debasmita bhoumik

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)

04 Jan 2016 haithem abdelghany

please I want matalab program to cut ROI from dicom image

Updates
21 Mar 2016 1.1

link to github

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