A License Plate Recognition and Speed Detection System - Index of

V.C.2. Software Architecture
To create the application, we researched available software libraries that were within our
budget limits. We then created customized C/C++ code to glue these libraries together as well as
add any additional functionality. We used Microsoft Visual C++ to compile and link the
application. A diagram of the software layer architecture is given below.
LPR Application
Microsoft MFC Intel OpenCV Serial Library
Intel IPP
The LPR application layer contains the customized code we created for the application. It
calls functions contained in the lower layer libraries. The Microsoft MFC library was used to
help create the user interface. It contains C++ classes for creating application windows and
menus. This library is not free and comes with certain versions of the Microsoft Visual Studio
package. The Intel OpenCV (Open Computer Vision) library provided computer vision functions
to process live video images being received from the webcam. Its functions provided the
capability to segment license plate characters in to separate images. This library is free and can
be downloaded from www.sourceforge.net. The Intel OpenCV library can be configured to use
the Intel IPP (Integrated Performance Primitives) library. This library provides low level image
processing functions that are optimized for Intel processors. A student edition of the Intel IPP
library can be purchased for $25. The Serial library provides functions for communicating with a
computer’s serial port. This library was used to retrieve data being sent by the radar gun. The
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Tesseract
Fig. 41 Application software layer architecture
IIDC DCAM