Mikolaj Koziarkiewicz, Senior Software Engineer, has started a tutorial series on computer vision for traffic analysis with OpenCV at softwaremill.com blog.
The very specific purpose of these tutorials is to identify local road congestion in time and space. Mikolaj uses Java Virtual Machine (JVM) and a ported library of OpenCV for JVM, called JavaCV.
The first step is to identify cars with a certain form of Canny Edge Detection, which may require special tweaking and may be imprecise. The tutorial contains the full code implementation of this, with relevant graphical illustrations.
In the second part of the tutorial, Mikolaj will present alternatives that do not require special tweaking. Please see the full first tutorial by accessing the link below. Happy practicing!
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Cristi Vlad, Self-Experimenter and Author