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3.6.14 Smoothing
This image filter removes the protrusions and indentations appearing in characters and patterns. When
five or six surrounding pixels have a different color, this function inverts the pixel concerned. It enables the
size of files to be reduced when they are compressed with no accompanying loss of image information.
Property
Description
Trim First
The black pixels are processed before processing the white pixels.
Corner Black
The protruding black pixels in the corners are removed.
Corner White
The protruding white pixels in the corners are removed.
Note
: The pixel processed is the one which is surrounded by five or six
pixels with the opposite color. Both white and black pixels are processed.
Table 15: Smoothing Properties and Descriptions