how to calculate area of objects in certain region of an image.

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Tasneem Tabassum
Tasneem Tabassum on 4 Jun 2017
Commented: KSSV on 5 Jun 2017
Hi i have an grayscale image which has objects all over the image. I want to know the area of the objects in certain regions of the image. I have divided the image in four quadrants using hline and vline and applied in polygon to define each rectangle region. but now i want to calculate the total area of objects residing in each rectangle. but regionprops() doesn't seem to cut it. I'm at a loss about how to do so.
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Walter Roberson
Walter Roberson on 4 Jun 2017
How do you want to calculate for objects that cross a quadrant boundary?
KSSV
KSSV on 5 Jun 2017
Attach an image so that people can help you around. Simply a question might not give an idea.

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