Based on previous work and some further reading, the program might
be fine with the following implementation which takes Haar filters
or their newer extension into account. Box diagram for the implementation
in place can be seen in Figure .
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Based on the paper titled ``Effective Traffic Lights Recognition
Method for Real Time Driving Assistance System in the Daytime,''
Kim et al. use similar tools. The paper is quite recent and
it too uses Haar filters. Before looking into this approach I also
attempted to use template-based search; it is infeasible, however,
because cars come in many shapes and sizes, not to mention colour
and illumination, context, etc. The example template image (see Figure
) enables me to deal with something that
in a mockup-type experiment3 would be easy to test, e.g. by putting the phone/tablet in front
of a computer screen with the exact same static image on it.
Roy Schestowitz 2012-07-02