How to specify the cropping area of an image with matlab?

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Sterne_17 2022-12-29

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回答： Image Analyst 2022-12-29

采纳的回答： Image Analyst

I have got the grayscale map after edge detection using the canny algorithm, and I need to crop a part of the image. But I don't know the coordinates of the top left and bottom right corners of the cropping area (rectangle). How do I determine the coordinate values of these two points?

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Image Analyst 2022-12-29

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https://ww2.mathworks.cn/matlabcentral/answers/1886102-how-to-specify-the-cropping-area-of-an-image-with-matlab#answer_1138152

See the attached drawrectangle demo.

Demos for other shapes are also attached.

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