find_beam_center_blur#

pyxem.utils.diffraction.find_beam_center_blur(z, sigma, upsample_factor=1.0, order=1, **kwargs)[source]#

Estimate direct beam position by blurring the image with a large Gaussian kernel and finding the maximum.

Parameters:

  • sigma (float) – Sigma value for Gaussian blurring kernel.

  • upsample_factor (float) – Factor by which to upsample the image before blurring and finding the maximum. Passed to the zoom paramter of the scipy.ndimage.zoom() function.

  • order (int) – Interpolation order for the zoom operation. Default is 1 (linear). Passed to the order parameter of the scipy.ndimage.zoom() function.

  • **kwargs (dict) – Additional keyword arguments to be passed to the scipy.ndimage.zoom function, such as order for interpolation order.

Returns:

center – numpy.ndarray [x, y] containing indices of estimated direct beam positon.

Return type:

numpy.ndarray