Investigating duplicated license plate reads - Security Center 5.11

Security Center User Guide 5.11

Applies to
Security Center 5.11
Last updated
2023-05-26
Content type
Guides > User guides
Language
English
Product
Security Center
Version
5.11

Using the Identical plate multi-vehicle report, you can detect if a license plate was illegally duplicated and used on a different vehicle.

What you should know

The task flags improbable reads where the same plate number is detected at two distant locations within a short time. If you must report the improbable reads, you can enter distance and time.

Procedure

  1. From the home page, open the Identical plate multi-vehicle task.
  2. Set up the query filters for your report. Choose one or more of the following filters:
    ALPR units - Patrollers
    Restrict the search to Patroller units and fixed ALPR units.
    License plate
    Enter a full or partial license plate number. To enter multiple license plates, see Filtering a report with multiple license plates
    Offload timestamp
    The date and time that the Patroller offloaded the reads/hits to Security Center.
  3. In the Duplicate section, enter the values for time and minimum distance. For more information on how to determine the values, see the example.
  4. Click Generate report.
    The reads are listed in the report pane.
  5. (Optional) To add columns to the report pane, do the following:
    1. Right-click a column name in the report pane.
    2. Click Select columns on the pop-up menu. You can also use keyboard shortcut Ctrl+Shift+C.
      Adding columns to reports pane
    3. From the Available columns menu, select the required columns and click .
    4. Click OK.
    Tip: You can add annotation fields as columns in the report pane.
  6. (Optional) To view high resolution images in the Plate image and Context image columns, expand the corresponding column width. For more information, see Customizing ALPR image quality displayed in report pane columns
  7. View your query results in the canvas, in one of the following modes:
    tile mode
    To show the ALPR event in a tile, double-click or drag the item from the report pane to the canvas.
    map mode
    To locate an ALPR event on the map, double-click the item in the report pane.

Example

The following scenario illustrates how to determine improbable reads by setting the time between reads and the distance between reads. The distance between Montreal and Ottawa is approximately 200 kilometers. Assuming the speed limits of highways, and peak traffic times, the travel duration can range from 2 to 2.5 hours. Therefore, for the report to display an improbable read, the parameters can be defined in the following way: