slmsuite.holography.analysis

Helper functions for processing images.

Submodules

files	Utilities for interfacing with files.
fitfunctions	Common fit functions.

Functions

blob_array_detect	Detect an array of spots and return the orientation as an affine transformation.
blob_detect	Detect blobs in an image.
fit_affine	For two sets of ordered points with equal length, find the best-fit affine transformation that transforms from the first basis to the second.
get_orientation_transformation	Compile a transformation lambda from simple rotates and flips.
image_areas	Given the output of image_variances(), return a measure of spot area for each moment triplet.
image_blaze_remove	Backwards compatible alias for image_remove_blaze().
image_centroids	Alias for image_positions()
image_ellipticity	Given the output of image_variances(), return a measure of spot ellipticity for each moment triplet.
image_ellipticity_angle	Given the output of image_variances(), return the rotation angle of the scaled basis for each moment triplet.
image_fit	Fit each image in a stack of images to a 2D function.
image_moment	Computes the given moment \(M_{m_xm_y}\) for a stack of images.
image_normalization	Computes the zeroth order moments, equivalent to spot mass or normalization, for a stack of images.
image_normalize	Normalizes of a stack of images via the the zeroth order moments such that each image sums to one.
image_positions	Computes the two first order moments, equivalent to spot position \(\left<x\right>\) relative to image center, for a stack of images.
image_reduce_wraps	Reduce the number of phase wraps in the image by adding a global offset.
image_relative_strehl	Computes a metric proportional to the Strehl ratio of a stack of images.
image_remove_blaze	Remove a global blaze from a phase image.
image_remove_field	Zeros the field of a stack of images such that moment calculations will succeed.
image_remove_vortices	Find and then remove all the phase vortices in a phase image.
image_std	Near-alias of image_variances().
image_variances	Computes the three second order central moments, equivalent to variance, for a stack of images.
image_vortices	Find the coordinates of phase vortices inside a phase image by computing the winding number directly.
image_vortices_coordinates	Find the coordinates of phase vortices inside a phase image by computing the winding number directly.
image_zernike_fit	Fits sets of Zernike polynomials to a stack of phase_images, up to a desired order.
take	Crop integration regions around an array of vectors, yielding an array of images.
take_plot	Plots non-integrated results of take() in a square array of subplots.
take_tile	Tiles a stack of images into a single image.