SimpleLPR License Plate Recognition SDK

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Automatic license plate recognition

SimpleLPR is a software component aimed at vehicle license plate recognition (see LPR, ANPR). It has a very simple application programming interface that allows applications to supply a path to an image or a pointer to a buffer in memory and to get in return the detected license plate number and its position in the image.

It can be used from C++ or any .NET enabled programming language such as Visual Basic .NET, C#, VB Script or JScript. Integration is simple and straightforward as demonstrated in the examples supplied with the SDK.

Typical successful detection rates range from 85% to 95% provided that license plates are in good condition, unoccluded and the text height is larger than 20 pixels.

Screenshot

• Windows XP
• Windows Vista
• Windows 2003 Server
• Windows 7
• Windows XP 64
• Windows 2003 Server 64
• Windows Vista 64
• Windows 7 64

• License plate pictures should be taken from a straight angle. For better results text in license plates should be horizontally aligned.
• License plate characters should be taller than 20 pixels and unoccluded.
• Assuming that the pictures comply with the above conditions, the detection accuracy should be around 90%.

Here you can download the SimpleLPR user's guide. 

Here you can download an unlicensed copy of SimpleLPR for evaluation purposes. 

Here you can purchase a licensed copy of SimpleLPR. 

[See change log]

The unlicensed version will be fully functional during 30 days.

The licensed version costs 400€. The license grants you rights to distribute a royalty free unlimited number of copies of SimpleLPR along with your application.

You can submit your questions/issues/bug reports/feedback to support@warelogic.com