How to Measure the Distance Between the Red crosses?

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Cara Mulrooney
Cara Mulrooney 2020-11-7
回答： Abhisek Pradhan 2020-11-10
I am trying to do shape identification using the harris corner detection method. I want to detect 2 corners of a shape and use the distance between those corners to identify the shape (square, triangle, circle, or star). How do I measure the distance between the red crosses in the picture below? How would I then classify that distance as a triangle?

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Abhisek Pradhan
Abhisek Pradhan 2020-11-10
imdistline can be used to find the distance between two points in an image by interactively setting the positions. For detecting whether the image is a triangle or not I would suggest referring the example in below-mentioned links. Or we may need to get the length of all three sides to conclude it to be a triangle.
https://www.mathworks.com/matlabcentral/answers/289472-how-can-i-detect-triangle

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