regionpros gives 0 area for a simple binary figure?

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Zilong He
Zilong He 2020-10-8
评论： Zilong He 2020-10-8
I have a very simple bw as shown below. But the regionprops gives me lots of 0 area. Code is here
bwnew = imread('oribw.tif');
r_ori = regionprops(bwnew,'boundingbox','area');
The results are shown above. I have all zeros except for the final one. Does any one know why this happens? The original BW is attached as a zip since I could not upload TIF file. Thanks!

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Matt J
Matt J 2020-10-8
编辑：Matt J 2020-10-8
Your bwnew needs to be of type logical, otherwise it gets treated as a label image.
>> T = regionprops('table',logical(bwnew),'boundingbox','area')
T =
2×2 table
Area BoundingBox
____ ________________________________
2583 312.5 509.5 58 56
2579 812.5 501.5 57 58

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