slmsuite.holography.analysis.image_normalize

image_normalize(images, nansum=False, remove_field=False)

Normalizes of a stack of images via the the zeroth order moments.

Parameters

• images (numpy.ndarray) – A matrix in the style of the output of take(), with shape (image_count, h, w), where (h, w) is the width and height of the 2D images and image_count is the number of images. A single image is interpreted correctly as (1, h, w) even if (h, w) is passed, though the returned image remains shape (h, w) in that case.

• nansum (bool) – Whether to use numpy.nansum() in place of numpy.sum().

• remove_field (bool) – Whether to apply image_remove_field() to avoid background-dominated moments.

Returns

images_normalized – A copy of images, with each image normalized.

Return type

numpy.ndarray