create multi mask using ROI Freehand

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clc;clear;close all

im=imread("circlesBrightDark.png");

image=imshow(im);

for i=1:4

roi(i)=images.roi.AssistedFreehand(image);

draw(roi(i))

hold on

roi(i+1)=images.roi.AssistedFreehand(image);

draw(roi(i+1))

end

for i=1:2

for j=1:2

mask=roi(i).createMask | roi(i+j).createMask ;

end

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Amir Azadeh Ranjbar 2021-12-29

This code that I wrote only makes 2 masks. I would be grateful if someone modifies the code so that they can make as many masks as they want.

If there is a code prepared for this purpose, please help

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Answer 1

DGM 2021-12-29

在 MATLAB Online 中打开

0 个投票

The way you're doing this is causing objects to be overwritten.

You can use the same method I showed in your prior question.

https://www.mathworks.com/matlabcentral/answers/1618490-rio-iteratively-to-create-mask

im = imread("coloredChips.png");
numROI = 6;
% create ROI objects and adjust them
imshow(im);
for k = 1:numROI
    h(k) = drawassisted(gca);
end
% wait until the user is done
input('Press enter when done adjusting ROI objects');
% build mask
mask = false(size(im,1),size(im,2));
for k = 1:numROI
    mask = mask | createMask(h(k));
end