myimagelib.corrLib.density_fluctuation

myimagelib.corrLib.density_fluctuation(img_stack, boxsize=None, size_min=5, step=250)

Compute number fluctuations of an image stack (3D np.array, frame*h*w)

Parameters:

  • img_stack – a stack of image, a 3D array

  • boxsize – a list-like of integers, specify the subsystem size to look at. If None, generate a log spaced array within (size_min, L/2) (pixels), with 100 points

  • size_min – the smallest box size

  • step – step used when dividing image into windows

Returns:

DataFrame of n and d, where n is box area (px^2) and d is total number fluctuations (box_area*dI)

Return type:

pandas.DataFrame

>>> from myimagelib.corrLib import density_fluctuation
>>> df = density_fluctuation(img_stack, boxsize=None, size_min=5, step=250)