This tab allows for the replacement of isolated pixel values with the value of the largest neighbour patch. It is useful for removing small patches from a classification.
It is possible to chose 4 pixel connection (in a 3x3 window, diagonal
pixels are not considered connected) or 8 pixel connection (in a 3x3
window, diagonal pixels are considered connected).
Tip
Information about APIs of this tool in Remotior Sensus at this link .
| Tool symbol and name | Description |
|---|---|
:guilabel:`Select input band set (of classifications)`  |
select the input :ref:`band_set_tab` |
| :guilabel:`Size threshold` |
size of threshold in number of pixels |
 :guilabel:`Pixel connection`  |
select between 4 pixel connection or 8 pixel connection |
| :guilabel:`Output name` | set the name prefix for output files |
:guilabel:`Virtual output`  |
if checked, the output is created as virtual raster composed of as
many .tif files as the number of CPU threads defined in
:ref:`system_processing` |
:guilabel:`Script`  |
add this function to the :ref:`script_tab` |
:guilabel:`RUN`  |
run this function |