Page History

Configure LPR IntelliVisionIV module as follows:

1. Go to the settings of the LPRIV IntelliVision module object created under on the basis of the LPR channel object.
   Image Modified

2. Set the Use GPU checkbox(1) if it is necessary to use the NVIDIA GPU resources to increase the license plate recognition performance. By default, only the CPU resources are used.

   Note
   title Attention!
   The startup (initialization) of the license plate recognition algorithm on NVIDIA GPU can take about one minute. No LP recognition events will be received until the initialization is complete.

   
   

3. Select the LPR accuracy in the Accuracy drop-down list (2). The following options are available:
   
   1. Maximum — enables Maximum—enables maximum recognition accuracy, but it causes great CPU and/or GPU load.  
   2. High — enables High—enables high recognition accuracy, it requires less computing resources than for maximum accuracy.
   3. Fast — enables Fast—enables high recognition speed, but the accuracy becomes worse.
4. Select the computing resources use mode in the Strategy drop-down list(3). The following options are available:
   1. Process  — mild Process—mild mode: no more than 1 core for 1 license plate.
   2. System — default System—default mode: all available computing cores are in use;
   3. Core — strict Core—strict mode: 1 core per stream.
5. From the Platform drop-down list (4), select the device on which the module will operate:
   1. Default — CPU Default—CPU resources are used for computing.
   2. TensorRT — NVIDIA TensorRT—NVIDIA GPU resources are used for computing.
   3. CV22, NCNN, HISI, Qualcomm, TFLite, OpenVino - other OpenVino—other device resources are used for computing, if available. These options apply to platforms other than x86/x64.
6. In the Interval field (5), specify the minimum time interval in milliseconds that lasts between frames processing (i.e. all frames within this interval will not be processed). The range of values is 0-999, the default value is 0.

7. Select the profile of country license plates that are to be recognized in the Profile drop-down list(6). 

   Note
   title ImportantAttention!
   The profile of country license plates should match the selected country for plate recognition (see Selecting the ccountry country and license plate recognition SDK).

   The following options are available:

   • 0 — 0—Common. This profile should be selected if By default country is selected.

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

     Info
     title Note
     The 9 profile enables recognizing correctly 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.   Greater profile number enables more accurate LPR comparing to the solution with smaller number, but it is more demanding to computing resources.

     
     

8. Click the Apply button (7).

Configuration of the LPR IntelliVisionIV module is completed.