Counting objects in an binary image of olympic logo

Question

I try lot of algo and matlab code to count the object in olympic logo i should get 5 object but my count only one how i should count an binary image of olympic logo and get 5 object need code

Expert Answer

John Williams PhD Expert

Answered Nov 20, 2025

try this :

% Convert the image from rgb into hsv color space:
hsvImage = rgb2hsv(rgbImage);
% Extract the hue image
h = hsvImage(:,:,1);
% Get the histogram
counts = histcounts(h, 1000);
% Find peaks in the histogram
[peaks, indexes] = findpeaks(counts);
% count the number of peaks
numberOfHues = length(peaks)

Requires Image Processing Toolbox for rgb2hsv() and Signal Processing Toolbox for findpeaks().

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