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Been tinkering with OpenCV in python. The face detection demo is impressive.
Are there any free collection of Haar classifiers aside from the face, eyes and full body ones?
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An LBP cascade can be trained to perform similarly (or better) than the Haar cascade, but out of the box, the Haar cascade is about 3x slower, and depending on your data, about 1-2% better at accurately detecting the location of a face.
you just need to go to the opencv releases site. There download the appropriate release. then open the downloaded file. In there direct as followed : sources > data > haarcascades ; In that file you should find the all default haarcascade files.
It is a machine learning based approach where a cascade function is trained from a lot of positive and negative images. It is then used to detect objects in other images.
Sure, there are a few common ones which show up in most people's projects, although opencv should come with these:
You can make your own cascades, but be warned, it's a pretty cumbersome process. The best tutorial I found was this one.
HTH
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