Function equalize_hist

pub fn equalize_hist(
    src: &impl ToInputArray,
    dst: &mut impl ToOutputArray,
) -> Result<()>

Equalizes the histogram of a grayscale image.

The function equalizes the histogram of the input image using the following algorithm:

• Calculate the histogram for src .
• Normalize the histogram so that the sum of histogram bins is 255.
• Compute the integral of the histogram:
• Transform the image using as a look-up table:

The algorithm normalizes the brightness and increases the contrast of the image.

Parameters

• src: Source 8-bit single channel image.
• dst: Destination image of the same size and type as src .