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Calculate orientaiton given 3 points

3dreconstruction

asked 2017-09-04 08:55:58 -0600

Hi, I know it basically is something that one should conclude going step by step with API but somehow I cannot manage so I hope someone can guide me through...

The assumption is that I have triangle equal arms, known size and i rotate it in my hand. I would like to get it orientation like in video below https://www.youtube.com/watch?v=wVPcX...

If triangle is not good then other shape can be good enough. the point is that I would like to make something to keep in in hand and be able to manipulate a'la controller. Thanks.

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answered 2017-09-04 13:08:02 -0600

Tetragramm

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HERE is the opencv tutorial that calculates pose for an arbitrary object. You can of course adapt this to whatever shape you want, although the 3 points of a triangle may not be enough. I'm pretty sure all the algorithms require at least 4 points, which means the center, or a point along one of the arms of the triangle.