How to know the original coordinates of cropped images

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feng
feng el 22 de Nov. de 2011
a=imread ('a.jpg');
imshow(a)
[acrop,rect]=imcrop(a);
The question is why rect should be in decimal (rect=[98.5 88.5 87 70] in my case) if it is the coordinate vector?

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Walter Roberson
Walter Roberson el 22 de Nov. de 2011
The coordinate system for image() (which is called by imshow()) is for the center of the pixels, so when you crop at a pixel boundary, the coordinate for that is going to be between two integers.

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