xrheed.preparation.filters

Functions

gaussian_filter_profile(profile[, sigma])

Apply a 1D Gaussian filter to a 1D xarray.DataArray profile.

high_pass_filter(rheed_data[, threshold, sigma])

Vectorized high-pass filter to a RHEED image or stack using Gaussian filtering.
gaussian_filter_profile(profile, sigma=1.0)[source]

Apply a 1D Gaussian filter to a 1D xarray.DataArray profile.

Parameters:

  • profile (xr.DataArray) – 1D data profile to be filtered.

  • sigma (float, optional) – Standard deviation for Gaussian kernel, in the same units as the profile coordinate (default is 1.0).

Returns:

The filtered profile as a new DataArray.

Return type:

xr.DataArray

high_pass_filter(rheed_data, threshold=0.1, sigma=1.0)[source]

Vectorized high-pass filter to a RHEED image or stack using Gaussian filtering.

Parameters:

  • rheed_data (xr.DataArray) – RHEED image (2D) or image stack (3D) to be filtered. The stack must have the first dimension as the stacking dimension.

  • threshold (float, optional) – Threshold for the high-pass filter (default is 0.1). Scales the blurred image before subtraction.

  • sigma (float, optional) – Standard deviation for the Gaussian kernel in screen units (default is 1.0).

Returns:

High-pass filtered RHEED image or stack.

Return type:

xr.DataArray