Is it possible to detect a crash test dummy marker using opencv?

opencv#detect#

asked 2016-05-13 09:05:17 -0600

I'm trying to detect a crash test dummy marker, using a kinect. Here is the marker. If anyone has any suggestion please share.

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First idea that comes to my mind is the matchTemplate function.

However it won't check for different orientations, so you might need to check for the sign with different orientations.

kbarni ( 2016-05-13 10:03:50 -0600 )edit

matchTemplate won't check for different size too.

pklab ( 2016-05-13 12:11:17 -0600 )edit

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answered 2016-05-13 16:14:32 -0600

Tetragramm

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I suggest using one of the three corner detectors HERE. Then check each of the corners to see if they are the intersection of yellow and black. The intersection in the center and probably the edges should appear brightly.

I suggest extracting a small box around each corner you find, and checking if it's about half black and half yellow. You'll have to come up with a good range of what yellow is, but that should be a simple task if you have a few sample images.