slmsuite.holography.analysis.image_normalization

image_normalization(images, nansum=False)

Computes the zeroth order moments, equivalent to spot mass or normalization, for a stack of images.

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.

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

Returns

The normalization factor \(M_{11}\) in an array of shape (image_count,).

Return type

numpy.ndarray