Internal function (used by s2_mask) which smooths and buffers a 0-1 mask image in order to reduce the roughness of the mask obtained from SCL classification (which is done pixel by pixel). See details.
smooth_mask(inmask, binpaths, tmpdir = tempdir(), radius = 250,
buffer = 250, namask = NULL)
The path of the input 0-1 mask (where 0 represents the area to be masked, 1 the clean surface).
list of paths of binaries.
(optional) Path where intermediate files (VRT) will be created. Default is a temporary directory.
(optional) Numerical (positive): the size (in the unit of
inmask
, typically metres) to be used as radius for the smoothing
(the higher it is, the more smooth the output mask will result).
(optional) Numerical (positive or negative): the size of the
buffer (in the unit of inmask
, typically metres) to be applied to the
masked area after smoothing it (positive to enlarge, negative to reduce).
(optional) The path of an input 0-1 mask where 0 represents the area of the original file with NA values (which should not be smoothed / buffered). Default (NULL) means that no NA values are present.
The path of the smoothed mask.