Documentation for Auto Intellect 5.2. Documentation for other versions of Intellect is available too.

Previous page Setting up the Vehicle detector parameters  Setting up the detection variables Next page

Setting up the detection zone is performed by setting the following parameters:

  1. Zone positioning;
  2. Zone direction;
  3. Zone size.

Attention!

Vehicle detector is optimized for detecting the zones of 6 meters in length and 2 meters in width.

Setting up the detection zone is performed in the video frame with the help of a graphic tool.

If the zone is setup approximately, to scale the zone in the frame one should use a road marking or nearby objects (curbing, hatches etc.).

Note.

In this case area's topographic parameters should be preliminary determined.

For zone's length accurate setup one should use cones, paint or other ways of the road marking .The distance between marks along the line should be 6 meters and zone's length should be correspondingly setup.
 

Attention!

Value of systematic errors depends on the value of zone's length errors.

Zone's width and its cross position in respect of the line's center can be varied to diminish the effect of the traffic cross overlap, moving by the next lines.

To provide the detector's algorithm efficient operation the zone size in the frame must occupy from 2 to 20 percent of the frame's area. If possible the detection zones have to be in that part of the frame, where the scale is greater (it is usually in the bottom).

Detection zone's direction must coincide with the traffic motion.

Setting up the detection zone is done in the following way:

  1. Go to the Vehicle detector object settings panel.
  2. Click the Configuring detection... to set up the detector zone's positioning (1).
  3. Frame selection dialog window will open in result.
  4. Click Select frame to select a video frame.

  5. Zone positioning setting dialog window will open in result.

    Using the keyboard and a mouse set the zone detection parameters.

    Key

    Function

    Note

    Left mouse key

    Transferring the zone's node point holding the pressed left mouse button

    The node point is selected in the frame by a rectangle

    Mouse scrolling

    Rotating the detection zone around its center

    Mouse cursor should be within the detection zone

    Mouse scrolling + Alt

    Step-by-step rotating the detection zone around its center

    Mouse cursor should be within the detection zone

    Mouse scrolling + Ctrl

    Zone scaling

    Mouse cursor should be within the detection zone

    Mouse scrolling + Shift

    Graded, in accordance with the sides of detection zone, change of its direction

    Mouse cursor should be within the detection zone

    Note.

    To set up the detection zone one has to use road's reference points with familiar topographic parameters.

  6. Click OK to save the changes and close the dialog window Zone position setting.

  7. Click Apply to save the changes (2).

Zone position setup is completed.