how can i generate the histogram of an hsv image?

hi i wanna generate the histogram of an hsv image without using the hist function of matlab. can someone give me an algorithm or a step-by-step process on this? thanks in advance.

[Image Analyst]

Why? What do you have against hist? Is imhist or histc okay?

Answer 1

[Walter Roberson]

counters = zeros(1,10);
Hpart = YourImageAsHSV(:,:,1);
for K = 1 : numel(Hpart)
  if Hpart(K) < 255/10
    counters(1) = counters(1) + 1;
  elseif Hpart(K) < 2*255/10
    counters(2) = counters(2) + 1;
  elseif Hpart(K) < 3*255/10
    counters(3) = counters(3) + 1;
  elseif Hpart(K) < 4*255/10
    ....
  else
    counters(10) = counters(10) + 1;
  end
end

counters is now the 10-bin histogram of the "H" part of the HSV image.