Contextual Median Filter

A contextual median filter that avoids smoothing fine structures. This is a simplified version of the Belkin-O’Reilly Algorithm.

Definition

This is a median filter that is only applied if the central pixel of the window is a maximum or minimum over the moving window. The moving window size is 3x3 by default.

Functions

• cmf_numpy()

• cmf_dask()

• cmf_xarray()

Supported types and requirements

Supported input types: Numpy, Dask, Xarray

Requirements:

• numpy

• numba