How to measure picture in Matlab GUI

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Siti Nor Arma Bt Mohd Zainun le 10 Mar 2013

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https://fr.mathworks.com/matlabcentral/answers/66638-how-to-measure-picture-in-matlab-gui

The image is browse from other file. I'm using the push button to browse the image. I was try the 'imdistline' syntax and the result shows only in pixel value. the problem now is, i want to convert the pixel into other unit, such as 'cm' 'mm' in the picture. Please show or share with me the formula and the code that i can be inserted in GUI