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# scipy.ndimage.morphology.black_tophat

`scipy.ndimage.morphology.``black_tophat`(input, size=None, footprint=None, structure=None, output=None, mode='reflect', cval=0.0, origin=0)

  Multi-dimensional black tophat filter.

  Parameters: | input : array_like Input. size : tuple of ints, optional Shape of a flat and full structuring element used for the filter. Optional if footprint or structure is provided. footprint : array of ints, optional Positions of non-infinite elements of a flat structuring element used for the black tophat filter. structure : array of ints, optional Structuring element used for the filter. structure may be a non-flat structuring element. output : array, optional An array used for storing the output of the filter may be provided. mode : {‘reflect’, ‘constant’, ‘nearest’, ‘mirror’, ‘wrap’}, optional The mode parameter determines how the array borders are handled, where cval is the value when mode is equal to ‘constant’. Default is ‘reflect’ cval : scalar, optional Value to fill past edges of input if mode is ‘constant’. Default is 0.0. origin : scalar, optional The origin parameter controls the placement of the filter. Default 0
  Returns: | black_tophat : ndarray Result of the filter of input with structure.

  See also

  `white_tophat`, `grey_opening`, `grey_closing`