How to get Color Histogram of an Image

Hello everyone,I want to get Color Histogram from a image.What is the Code to get color histogram.what is the difference between HISTOGRAM and COLOR HISTOGRAM.How to show it on screen.

Answer 1

[Mehdi Saberioon]

Histogram is displaying the distribution of data. Color histogram shows distribution for each band.

    %Split into RGB Channels
    Red = image(:,:,1);
    Green = image(:,:,2);
    Blue = image(:,:,3);

    %Get histValues for each channel
    [yRed, x] = imhist(Red);
    [yGreen, x] = imhist(Green);
    [yBlue, x] = imhist(Blue);

    %Plot them together in one plot
    plot(x, yRed, 'Red', x, yGreen, 'Green', x, yBlue, 'Blue');

[sarah ismail]

will this work if I have 1000 images to display ? thank you

[Image Analyst]

Yes

[teja jayavarapu]

How to find the bin count in hsv color space

[yara anitha]

can anyone expain the output?

Answer 2

[teja jayavarapu]

I have quantized hsv into 8×3×3 combinations,so I want to find what is number of pixels per each bin how do I do it

[Image Analyst]

It's the value of the histogram that you say you've created.

Answer 3

[mariena aloor]

Sir i want to apply moving average filter to the individual color histogram planes

Answer 4

[Abcd efgh]

Please refer this tutorial--

Color Image Histogram

Hope this will be helpful.

Happy Learning :-)