Investigating duplicated license plate reads - Security Center 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.

1. From the homepage, 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.
      
   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: