Real World Coordinate of Rotary table in Stereo Calibration

asked 2017-06-25 07:53:14 -0500

Alexxp gravatar image

I have implemented stereo camera calibration and I can get the extrinsic and intrinsic camera parameter. For calibration I have captured the calibration board with 6-DOF. But now calibration board is mounted on the rotary table and I need to calculate the position (XZ) of rotary table respect to the origin point which is camera 0.

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My idea to get the XZ position of rotary table is:

1- capturing some calibration board images by rotating the table 2- calculating the normal vector of calibration board 3- finding the cross sections of those normal vectors (at least two)

My question is how can I calculate the normal vector of calibration board? or maybe someone has better solution to get the world coordinate of the rotary table.

I googled it but couldn't find something relevant.

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Comments

By "position of the rotary table" what do you mean? Its center? If so, why don't you simply calculate the 3D position of a reference point on the chessboard?

David_86 gravatar imageDavid_86 ( 2017-06-26 07:04:23 -0500 )edit

Actually the position of rotary table doesn't help me. I need to calculate the vector Y respect to the origin point.

Alexxp gravatar imageAlexxp ( 2017-06-26 18:33:05 -0500 )edit