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Performed by AutoSDK recognition engine, LPR license plate recognition is the main feature of every principal VIT product, whether it's a plug-in for VMS or a hardware device for on-site traffic surveillance. As a core component, AutoSDK determines has three fundamental licensing parameters:  

  1. number of LPs issuer-states;

  2. number of recognition channels;

  3. video processing speed.

Table of Contents

Now, let's consider them in more detail.

Number of countries

When preparing a license for you, we

will

have to specify for AutoSDK what kind of license plates (LPs) are to be searched on your video. Those LP templates are grouped by the country where they were issued. So what are those countries and their number make the first licensing parameter.

Number of recognition channels

We call one traffic lane under video surveillance a recognition channel. Also, we sometimes call it a recognition thread, because it usually takes one OS thread to recognize LPs within one traffic lane. Depending on resolution, your

cameras

camera may capture one or multiple lanes in a frame, thus, your license

will

should provide the corresponding number of available recognition channels (see the Example

1

).

Video processing speed

Video processing speedis a number of frames to be processed by AutoSDK every second. In other words, AutoSDK selects a specific number of frames from a frameset provided every second and performs search and recognition operations on those frames. The rest of the frames are overpassed, which allows for AutoSDK load balancing. This feature helps

Different video processing speeds help to utilize one's resources optimally, as, in some installation zones, analysis of every single frame obtained from a camera is not necessary for high LPR quality (for example, when each vehicle stops in front of a camera for a while before leaving the frame). So, AutoSDK has the following operation modes:

                  

 

 

 

 

 

 

 

 

 

 

 

 

 

"Parking" mode"Freeflow" mode
Speed of vehicles in surveillance zoneup to 20 km/hup to 220 km/h
Video processing speedup to 6 fpsdetermined by video framerate and CPU capacity
Typical use cases

  • border control;

  • access control and traffic monitoring at restricted areas (airports, parking lots, business centers, gas stations, factories, logistics centers, residential areas etc.);

  • static & dynamic vehicle weighing (LPR as a source of additional data).

  • road safety & law enforcement (intersection control, detection of traffic violations, search of stolen cars);

  • electronic toll collection;

  • statistics gathering (e.g. traffic count, journey time management).
Note

Besides the main licensing parameters listed above, there are functionalities of additional VIT software that are also protected. For example, the VMS plug-in which performs communication with vehicle scales (Libra for Intellect Enterprise) is licensed by the number of connected scales and their manufacturers/models. For more information on additional product-specific licensing parameters, please refer to corresponding product documentation or contact your sales representative.

Info
titleExample

Let's assume that, in your facility,...

1.

... you have a public access point with two traffic lanes:

  • one for entering vehicles;
  • another one for leaving vehicles.

A high-resolution camera is used for monitoring.

For vehicles registration, you have installed LPR software which receives one video stream with two traffic lanes captured.

2.

The second access point that you maintain is private, used by employees and suppliers. Similarly, it has two lanes for vehicles entrance and exit, monitored by another dedicated camera. The video stream is also to be fed to LPR software.

Thus, your license should provide you with 4 recognition channels/threads.