Xovis PC Series, Руководство пользователя

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Figure 20: Name a scene item
As for all scene elements, this name must be unique among all other scene elements like
count lines and count zones. But at this point, the floor item will be the first scene item
added. After specifying a name, the floor is automatically added to the scene element list on
the right. There can also be more than one floor area (element) in the scene, e.g. for two
corridors covered by one sensor or just to simplify the drawing procedure for the user (see
Figure 21 b).
The floor mask defines the area in which persons should be detected by the sensor and
refers to the feet positions of a person. Usually the whole floor contained in a scene should
be covered by the floor mask. For special situations it can be desired to limit the floor mask
to a part of the actual floor only, e.g. when persons passing in a neighboring zone should be
ignored (see Figure 21 c).
Figure 21: Floor mask in different scene situations
As Figure 21 shows, it is a good practice to keep a small distance between the floor mask
and limiting objects like walls, doors or shelves. As mentioned already, it is also possible to
use more than one floor masks if the situation is demanding this.
To modify a floor mask the polygon points can simply be moved with the mouse. Double-
clicking on a polygon point will delete it, double-clicking on the polygon line will add an
additional point to the polygon. The whole polygon can be moved by clicking and holding the
mouse within the floor mask area and moving it to the desired location (drag-and-drop).