normalize_intensity#

kikuchipy.pattern.normalize_intensity(pattern: ndarray, num_std: int = 1, divide_by_square_root: bool = False, dtype_out: type | None = None) → ndarray[source]#

Normalize image intensities to a mean of zero and a given standard deviation.

Data type is preserved.

Parameters:

pattern: EBSD pattern.
num_std: Number of standard deviations of the output intensities (default is 1).
divide_by_square_root: Whether to divide output intensities by the square root of the image size (default is False).
dtype_out: Data type of the normalized pattern. If not given, it is set to the same data type as the input pattern.

Returns:

normalized_pattern: Normalized pattern.

Notes

Data type should always be changed to floating point, e.g. float32 with numpy.ndarray.astype(), before normalizing the intensities.