determine quantity of pixel in one image

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HI ALLS!
i am working an square's grayscale image 252*252, now i just wanna to focus on smaller area in this image and count how many pixels this area have in there.
hope you guys help me! thanks so much!

Accepted Answer

Image Analyst
Image Analyst on 24 Apr 2014
See my attached demo where you can hand-draw some region (doesn't have to be rectangular) and it will report the area and do some other stuff too, like masking.

More Answers (2)

José-Luis
José-Luis on 24 Apr 2014
Well, that would depend on the area, wouldn't it?
number_of_pixels = width * height;

cuong nguyen
cuong nguyen on 5 May 2014
sorry to reply lately! Thanks you guys!
Imange Analyst : Does it count the pixels of each grayscale level?

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