opencv - What can I detect with the haar classifier? -

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lets want train cascade recognize 1 object, object has different shapes. example if want recognize cup. know there cups in many shapes have similarities. or example: steering wheel. can tell object steering wheel has different shapes. question: can train cascade recognize of different shapes of 1 object?

if train 1 cascade many false positives due high variance of positive samples.

however if have, 20 stable classifiers, focused on different shapes, can or , use them.

suggestions on steering wheel case

  • do not use steered wheels positives, use 0 - degree wheels, make classifier converge onto something.

  • group wheels similarity in shape (color not important boosted cascade , background not important because cars have similar gauge displays) , train cascades on these groups

  • search wheel in rotations - note symmetries - since boosted cascade rotation invariant - , steering wheel steered.


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