How to calculate and plot the histogram of DCT coefficients of an image?

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Mohsin Shah on 24 Apr 2017

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Commented: Walter Roberson on 24 Apr 2017

Accepted Answer: Walter Roberson

How to calculate and plot the histogram of DCT coefficients of an image?

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Walter Roberson on 24 Apr 2017

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Calculate the coefficients with dct(). Call histogram() with them.

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Mohsin Shah on 24 Apr 2017

can you explain it with an example?

Walter Roberson on 24 Apr 2017

Open in MATLAB Online

Img = imread('cameraman.tif');
y = dct(double(Img));
histogram(y)

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