Find the coordinates of 2 point in the first images (edge of an object before rotation) using the coordinates of this 2 points in the rotated image

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jenny jenny 2017-11-18

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https://ww2.mathworks.cn/matlabcentral/answers/367829-find-the-coordinates-of-2-point-in-the-first-images-edge-of-an-object-before-rotation-using-the-co

I have a binary image with a specific rotation i want after rotation (horizontal) of the edge of this image if it is possible to determine the coordinates of this 2 points in the edge of the first image (without rotation) using the coordinates of the seconde image. i will be thankful if someone can help me, thank you a lot.