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Taboo masks should cover slightly more than necessary to ensure robustness against a
slightly slopping over of disturbing artefacts.
The drawing procedure is the same as with the floor mask (see chapter 3.2.7.6). Taboo
masks are also added to the scene element list as soon as the initial drawing is finished.
4.2.3 Example for mask differentiation
The following example gives a better understanding on how the two masks work.
The following image illustrates a person walking close to a mirror (red) and the reflection of
the person (green).
As the green mirrored person shows valid criteria to the sensor for being a real person as
well, the sensor will track both of them. This is unwanted and can be addressed by using a
mask.
When using a blue mask, the complete area covered by this mask is cleared, i.e. shows no
information anymore. The sensor is blind in this area. This leads to the fact, that not only the
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