MATLAB: Removing regions with holes

euler numberholesimage analysisImage Processing Toolbox

I have a mask image with the white regions being the region of interest. Now I want to remove all the white regions that have black hole(s) inside and retain only the solid white shapes (mostly observed along the column boundaries). The mask image is attached. Any help will be greatly appreciated.

Best Answer

BW = bwpropfilt(yourmask, 'Solidity', [0.94, 1]);

you can change the value of 0.94 depending on how strict you want to be, if you set it to 1 be very strict

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MATLAB: How to keep only solid white dots and eliminate dots that inside them is black in the attached image

bwpropfilt function would be helpful for your task. The following is an example.

% Read the image
I = imread('Example.jpg');
% Binarize the image
BW = imbinarize(rgb2gray(I));
% Suppress light structures connected to image border
BW = imclearborder(BW);
% Filter out regions which has hole(s)
BW = bwpropfilt(BW,'EulerNumber',[1 1]);

MATLAB: Reference to non-existent field ‘BoundingBox’. Error in findVehicle (line 10) bboxes = regions.BoundingBox; can anyone explain

Please show the output of

which -all filterRegions

filterRegions does not appear to be part of any toolbox. It appears to be only part of one particular MATLAB demo https://www.mathworks.com/matlabcentral/fileexchange/57116-deep-learning-for-computer-vision-demo-code?focused=6805483&tab=function

Best Answer

Related Solutions

MATLAB: How to keep only solid white dots and eliminate dots that inside them is black in the attached image

MATLAB: Reference to non-existent field ‘BoundingBox’. Error in findVehicle (line 10) bboxes = regions.BoundingBox; can anyone explain

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