# scipy.signal.medfilt2d¶

scipy.signal.medfilt2d(input, kernel_size=3)[source]

Median filter a 2-dimensional array.

Apply a median filter to the input array using a local window-size given by kernel_size (must be odd). The array is zero-padded automatically.

Parameters
inputarray_like

A 2-dimensional input array.

kernel_sizearray_like, optional

A scalar or a list of length 2, giving the size of the median filter window in each dimension. Elements of kernel_size should be odd. If kernel_size is a scalar, then this scalar is used as the size in each dimension. Default is a kernel of size (3, 3).

Returns
outndarray

An array the same size as input containing the median filtered result.

Notes

The more general function scipy.ndimage.median_filter has a more efficient implementation of a median filter and therefore runs much faster.

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