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ImageHistogram

ImageHistogram[img] gives the frequency of occurrence of sample values in img.

ImageHistogram[img, {min, max}] gives the frequency of occurrence of sample values in img in the range {min, max}.

ImageHistogram[img, {min, max, dx}] gives the frequency of occurrence of sample values in img in the range {min, max} using stepsize dx.

ImageHistogram returns a list of pairs of values {{x₁, f₁}...}, where x_i is a sample value and f_i is its relative frequency.

The argument img may be a list or ImageData expression.

See also User's Guide 3.3.

Examples

This loads the package.

In[1]:=

Here is the histogram of a simple list of integers.

In[2]:=

Out[2]=

Here is the histogram of a list of reals, using a quantization stepsize of dx=0.2.

In[3]:=

Out[3]=

This loads an example image.

In[4]:=

Here we calculate and display the histograms of the three color channels of img.

In[5]:=

Out[5]=

Out[5]=

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