How to hightlight the mask in a image

Question

Yode 2018-6-2

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/403655-how-to-hightlight-the-mask-in-a-image

关闭： MATLAB Answer Bot 2021-8-20

If I'm in Mathematica, I just run

I can get what I want, but I cannot find the corresponding function in Matlab? How to implement it? This is my test image

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Answer 1

Anton Semechko 2018-6-2

0
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/403655-how-to-hightlight-the-mask-in-a-image#answer_322920

在 MATLAB Online 中打开

Here you go:

im=imread('https://www.mathworks.com/matlabcentral/answers/uploaded_files/119871/test1.png'); % grayscale
bw=imread('https://www.mathworks.com/matlabcentral/answers/uploaded_files/119872/test2.png'); % binary
B=bwboundaries(bw);                                                                           % shape contours
% Superimpose contours on grayscale image
figure('color','w')
imshow(im)
hold on
for i=1:numel(B)
    h=fill(B{i}(:,2),B{i}(:,1),'r');
    set(h,'FaceAlpha',0.6,'EdgeColor','r','LineWidth',2)
end