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Autocorrelation

Source

Autocorrelation function.

autocorrelation(image)

Compute the autocorrelation of an image.

This method is used to explore spatial correlations in images, in particular in the noise.

The autocorrelation is normalized to the zero-shift value, which is centered in the resulting images.

Parameters:

  • image (NDArray) –

    Input image.

Returns:

  • ndarray –

    Autocorrelation of the input image.