measure the maximum distance in millimeters(mm)
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How can I measure the maximum width of the white shape in millimeters(mm) not in pixels ?
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/283668/image.png)
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Image Analyst
on 11 Apr 2020
Then you need to multiply by the number of millimeters per pixel:
props = regionprops(binaryImage, 'BoundingBox')
width = props.BoundingBox(3) * mmPerPixel;
See attached demo.
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