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histogram

Built-in command

Arguments:

• nb_levels>0[%],_min_value[%],_max_value[%]

Description:

Compute the histogram of selected images.

If value range is set, the histogram is estimated only for pixels in the specified
value range. Argument max_value must be specified if min_value is set.

Default values:

min_value=0% and max_value=100%.

Example of use: