how to know the number of regions of the image?
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Hi! I have a color segmented image. i need to know the number of regions of the image , and the size of each region. Can anyone help me please?
回答(2 个)
Guillaume
2017-7-17
编辑:Guillaume
2017-7-17
You use regionprops on your segmented image. The number of elements in the structure array it returns is the number of regions. The Area field or the BoundingBox field of the structure gives you the size, depending on what you call size.
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Guillaume
2017-7-17
编辑:Guillaume
2017-7-17
I'm not sure what an inverse wavelet transform of a labeled image gives you. If it's still a label image then you can use regionprops on it. If it's not, then you need to segment it again using an appropriate method, possibly another watershed.
I don't really understand why you'd want to apply an inverse wavelet transform to the result of a watershed segmentation.
Image Analyst
2017-7-27
Use bwlabel() on your segmented (binary) image - that's one way.
[~, numRegions] = bwlabel(segmentedImage);
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