please tell me the meaning of following code

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darks = find(v <.2)';
lights = find(s < .05 & v > .85)';
h([darks lights])= -1;
black = length(darks)/pixels;[x,y, z]=size(I);
white = length(lights)/pixels;
red = length(find((h >.9167 | h <=.083) & h~=-1))/pixels;
yellow=length(find(h >.083 & h<=.25))/pixels;
green=length(find(h > .25 & h<= .4167))/pixels;
cyan= length(find(h > .4167 & h<= .5833))/pixels;
blue=length(find(h > .5833 & h <= .75))/pixels;
magenta=length(find(h > .75 & h <= .9167))/pixels;

Accepted Answer

Dishant Arora
Dishant Arora on 20 Jun 2014
This code is calculating probably density function of colors(black, white, red , yellow and so on) present in image out of an image(hsv).
Dishant Arora
Dishant Arora on 20 Jun 2014
It says how often a color is occuring/present in image or when you pick up a random pixel what's the probability of that pixel to be of a particular color

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More Answers (1)

Image Analyst
Image Analyst on 20 Jun 2014
It's counting the number of pixels with those particular colors.
Anamika baruah
Anamika baruah on 21 Jun 2014
do you mean that above code is for calculating no of pixels of particular color
Image Analyst
Image Analyst on 21 Jun 2014
Edited: Image Analyst on 21 Jun 2014
Yes, but it's normalized (by dividing by the number of pixels), so it's really an area fraction than a pure count.

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