Documentation for Auto PSIM 2.0.

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The license plates of passing vehicles are automatically recognized and subsequently displayed in the Vehicle Tracer interface window. By default, the recognized license plate is displayed after the vehicle leaves the camera FOV.

It is possible to display the license plate on the screen before the vehicle leaves the frame only if you use the VT, AUTO-Uragan, AR-Auto, RR (including the RR vendor and model recognizer module) software modules.

To set up the display of license plate recognition results, do the following:

  1. Go to the Settings of LP processing tab on the settings panel of the LPR channel object, corresponding to the activated module (see Activating the program module, used for identifying the plates).

  2. Set the Display result before vehicle leaves checkbox to show the result before the vehicle actually leaves the frame (more precisely, before the license plate leaves the detection area). If you leave the checkbox clear, the result is shown only after the vehicle actually leaves the frame.

  3. In the Result display delay field, specify the time in seconds after which the recognition result is displayed. This period of time starts after the first license plate recognition.

    Note

    This parameter is enabled if you set the Display result before vehicle leaves checkbox.

  4. In the Recognition number threshold field, specify the number of reliable license plate recognitions, upon reaching which the recognition result is displayed. The recognition number counter is cumulative and is not reset in case of temporary loss of a given area or false recognitions.

    Note

    This parameter is enabled if you set the Display result before vehicle leaves checkbox.

  5. Click the Apply button.

    Note

    To save the changes, also click the Apply button on the settings panel of the corresponding software module.

The display of license plate recognition results is set up.

Note

  1. If both Result display delay and Recognition number threshold fields are specified, the results are displayed upon the event that occurs first (either the Result display delay time passes or the Recognition number threshold is reached). If the values of these parameters are set to 0 or not set at all, then the parameters Result display delay and Recognition number threshold are not taken into account, and the license plate recognition results are displayed after the vehicle leaves the FOV.
  2. The Display result before vehicle leaves, Result display delay, and Recognition number threshold parameters do not work with the Parking mode.
  3. When you use the VT software module, if you enable the Display result before vehicle leaves parameter, the values of the fine-tuning parameters of the SDK are also changed: VodiCTL_VPW_DYNAMIC_WITH_DUPLICATE is changed to True, VodiCTL_VPW_DYNAMIC_OUTPUT_TIMEOUT and VodiCTL_VPW_DYNAMIC_OUTPUT_FRAMECOUNT are changed according to the values in the Result display delay and Recognition number threshold fields. The opposite is also true: changes in the VodiCTL_VPW_DYNAMIC_WITH_DUPLICATE, VodiCTL_VPW_DYNAMIC_OUTPUT_TIMEOUT, and VodiCTL_VPW_DYNAMIC_OUTPUT_FRAMECOUNT fine-tuning parameters of the SDK are also displayed in the settings of the recognition channel. The value of the VodiCTL_VPW_DYNAMIC_OUTPUT_TIMEOUT parameter is rounded down to whole seconds (for details on fine-tuning, see Configuring the VT software module and The settings panel of the VT module object).
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