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HaarCascade (for OpenCV) to recognize a marker

I'm trying to get OpenCV to recognize a visual badge (marker). Does anyone have an existing HaarCascade (preferably an xml file) of a badge of some sort?

Links of any sort are appreciated Thx! Antoine

I believe you can create your own haar cascase using the following link:

http://note.sonots.com/SciSoftware/haartraining.html

I'm not aware of any existing haar xml which can recognize market/visual badge.

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