A method and a system for measuring a relative position and orientation of range
cameras using a movement of an object within a scene. In general, the present invention
determines the relative pose between two cameras by measuring a path the movement
of the object makes within a scene and calculating transformation parameters based
on these measurements. These transformation parameters are used to determine the
relative position of each camera with respect to a base camera. In a preferred
embodiment, the present invention also includes other novel features such as a
data synchronization feature that uses a time offset between cameras to obtain
the transformation parameters. In addition, the present invention includes a technique
that improves the robustness and accuracy of solving for the transformation parameters
and an interpolation process that interpolates between sampled points if there
is no data at a particular instant in time. Further, the present invention includes
a system for determining a relative position and orientation of range cameras using
spatial movement that incorporates the method of the present invention.