PIXEL counting at grey scaled picture
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DIMITRIOS ZAFEIRIOU
le 24 Jan 2022
Commenté : DIMITRIOS ZAFEIRIOU
le 24 Jan 2022
I have a picture which is greyscaled and i want to count the number of pixels from 200-255( the bright ones) from the histogram.Any ideas about the coding or other way? Thank you!
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KALYAN ACHARJYA
le 24 Jan 2022
Modifié(e) : KALYAN ACHARJYA
le 24 Jan 2022
%Using Histogram (Considering 256 Levels)
[counts,binLocations]=imhist(grayImage);
pix_counts=sum(counts(200:end))
##
%% 2nd Method, easier
high_pix=grayImage>199;
pix_counts=sum(high_pix(:))
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Image Analyst
le 24 Jan 2022
And yet another option:
brightRegions = grayImage >= 200;
numBrightPixels = nnz(brightRegions);
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