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VISFILTER (Statement)
Function
Executes filtering on the screen.
Format
VISFILTER <Window number>, <Coordinate X>, <Coordinate Y>, <Process
screen>, <Storage screen>
[, <Mode>]
Explanation
<Window number> Designates the window number (0 to 511).
<Coordinate X> Designates the X coordinate (0 to 511).
<Coordinate Y> Designates the Y coordinate (0 to 479).
<process screen> Designates the storage memory number (0 to 3).
<Storage screen> Designates the storage memory number to store filtering
results (0~3).
<Mode> Designates the type of filtering (3 x 3 space filtering).
0: minimum value filtering
1: maximum value filtering
If this is ignored, 0 will be the default setting.
Before execution
After
execution
If you execute the maximum value filtering, the
center brightness is replaced with the maximum
value among the 8 peripheral pixels.
Therefore, if you execute all object processing
ranges, fine points or lines in an image are
deleted.
On the other had, you can delete points and
lines with high brightness by executing the
minimum value filtering.
The values in square
are brightness.
Maximum value
filtering
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