how to count the different dots seperately

I have an image with red dots ,green dots and yellow dots. some dots are touching eachother. (2 pixels) and some dots are alone (1pixel) I would like to have a count of red dots, green dots, yellow dots and the number of touching dots. Can someone tell me how this can be achieved. I am attaching the image here.

Thank You

Answer 1

[Image Analyst]

Extract the color channels

% Extract the individual red, green, and blue color channels.
redChannel = rgbImage(:, :, 1);
greenChannel = rgbImage(:, :, 2);
blueChannel = rgbImage(:, :, 3);

Then threshold and label

redDots = redChannel > 100; % or whatever
[!, numberOfRedDots] = bwlabel(redDots);
greenDots = greenChannel > 100; % or whatever
[!, numberOfgreenDots] = bwlabel(greenDots);