Documentation for Auto PSIM 1.0.1.

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Attention!

If you want to use the computing resources of the NVIDIA GPU to improve license plate recognition, select the required option from the Use GPU drop-down list on the settings panel of the LPR channel object (see Selecting a device for license plate recognition).

The startup (initialization) time of the algorithm of license plate recognition on the NVIDIA GPU can take approximately one minute. No license plate recognition events are received until initialization is complete.

To set up the IV module:

  1. Go to the settings of the IV module object created on the basis of the LPR channel object.
  2. From the Accuracy drop-down list, select the accuracy of the license plate recognition:
    1. Maximum—enables maximum recognition accuracy, but it creates a high load on the CPU and/or GPU.  
    2. High—enables high recognition accuracy, it requires fewer computing resources than for maximum accuracy.
    3. Fast—enables high recognition speed, but the recognition accuracy is reduced.
  3. From the Strategy drop-down list, select the usage mode of computing resources:
    1. Process—mild mode, no more than one core per license plate is used.
    2. System—the default mode, all available computing cores are in use.
    3. Core—strict mode, one core per stream is used.
  4. In the Interval field, specify the minimum time interval in milliseconds that lasts between frame processing (that is, all frames within this interval will not be processed). The range of values is 0-999; the default value is 0.

  5. From the Profile drop-down list, select the profile of country license plates that must be recognized. 

    Attention!

    The profile of country license plates must match the selected country for license plate recognition (see Selecting the country and license plate recognition SDK).

    The following options are available:

    • 0—Common. Select this profile if you select By default country.

    • 3, 6, and 9—for more information, see The IV module functionality.

      Note

      The 9 profile enables the correct recognition of the USA license plates with vertical letters on the plates. It can also be recommended to be in use when maximum recognition accuracy is needed if there is no high load on hardware.  

      A higher profile number enables more accurate license plate recognition compared to the solution with a lower number, but it is more demanding on computing resources.

  6. Click the Apply button.

Configuration of the IV module is complete.

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