How i can find the size in mm of all blobs in a binary image????

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Talha Meraj
Talha Meraj 2019-1-22
回答： Image Analyst 2019-1-22
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Rik
Rik 2019-1-22
What do you mean with size? Area? Tip to tip distance? Something else?
And what is the size of your pixels? If you don't have the size of the pixels, you can only measure the blob size in pixel units.

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Image Analyst
Image Analyst 2019-1-22
See my Image Segmentation Tutorial: My File Exchange
That will show you how to get areas and diameters in pixels.
When you get the areas from regionprops, multiply by your mmPerPixel calibration factor. When you get the diameter or distances, multiply theb your mmPerPixel squared. See my attached spatial calibration demo.

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