MATLAB: Counting particles on image with sizes range

Question

I need counting particles of an image based on their size range.

Such as 7.5-15, 15-25, 25-50, 50-100, 100-150, 150-200, 200-400, 400-600, 600-1000, >1000 micrometers

how i can count the particles on the image and put each number into excel.

Thank you

Answer 1

regionprops() their Area or other relevant "size" measure. histc() or histcounts() to get the counts (note that those two have different behaviours for the values exactly equal to the final value.) xlswrite() to write into excel.