measure the maximum distance in millimeters(mm)

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Dina Abd El-twab
Dina Abd El-twab 2020-4-11
评论： Dina Abd El-twab 2020-4-12
How can I measure the maximum width of the white shape in millimeters(mm) not in pixels ?
Image Analyst

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Image Analyst
Image Analyst 2020-4-11
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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Dina Abd El-twab
Dina Abd El-twab 2020-4-12
编辑：Dina Abd El-twab 2020-4-12
I need it to extract features .
Image Analyst
Dina Abd El-twab
Dina Abd El-twab 2020-4-12
I applied your (regionprops code), but the value that is obtained is not the right value , I applied (imtool) and I found that the maximum width is 60.07 .
But your code gave me the width is 445.

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