Particular Point detection in an image

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Karn Vadaliya 2019-2-11

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https://ww2.mathworks.cn/matlabcentral/answers/444276-particular-point-detection-in-an-image

评论： Mark Sherstan 2019-2-12

采纳的回答： Mark Sherstan

I am doing a project on stereo vision and for that i need the 2D location of the 4 points in the below image:

I am confused as to how can I detect those points in Matlab. Is there any function for that ?

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KSSV 2019-2-11

YOu can detect those points manually using getpts or ginput.

KALYAN ACHARJYA 2019-2-11

I dont know abour other test images, for this specific image, you can locate them using morphological image processing (segmentation).

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Mark Sherstan 2019-2-11

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https://ww2.mathworks.cn/matlabcentral/answers/444276-particular-point-detection-in-an-image#answer_360526

编辑：Mark Sherstan 2019-2-11

在 MATLAB Online 中打开

Assuming all your images are approximetly the same do the following:

I = imread('image.png');
J = im2bw(I);
K = bwpropfilt(J, 'Area', [115, 175]);
figure(1)
subplot(1,3,1); imshow(I)
subplot(1,3,2); imshow(J)
subplot(1,3,3); imshow(K)
stats = regionprops(K,'Centroid');
stats.Centroid % This will provide the 2D coordinates