Patent ID: 11905675
Assignee: TOPCON POSITIONING SYSTEMS, INC.
Field: Civil engineering (Other fields)
Classification: CPC E  G | IPC E  G

Claim 11:
12. A method for determining a position of an implement attached to a machine, comprising:
acquiring, from an image acquisition device, an image of the implement, wherein the image acquisition device is positioned (i) to view at least two points of interest located distally on the implement such that the at least two points of interest are visible in the image for an entire range of motion of the implement; and (ii) such that any combination of motions of the implement sharing an origin will cause the at least two points of interest to be mapped to an image plane of the image acquisition device by an azimuthal projection; and
calculating, using a processor, respective locations of the at least two points of interest within spherical patches of a vision system frame of reference of a vision system by reversing a projection of the at least two points of interest in the image using respective locations of the points of interest in the image and a known geometry of an articulation of the implement about the machine.