Patent ID: 11947736
Assignee: VARJO TECHNOLOGIES OY
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 5:
6. The controller-tracking system of claim 1, wherein the at least one light source is a white light source and the at least one camera is at least one autofocus polychromatic camera, and wherein the at least one processor is further configured to:
receive, from an external tracking means, an estimated distance of the white light source from the at least one autofocus polychromatic camera; and
adjust a focus of the at least one autofocus polychromatic camera according to the estimated distance, to enable the at least one autofocus polychromatic camera in capturing the at least one image using the adjusted focus;
wherein when determining the level of focussing of the white light source in the at least one image, the at least one processor is configured to determine one of: brightnesses of constituent colour components of white light in at least one central pixel of the at least one image segment, relative brightnesses of constituent colour components of white light in at least one central pixel of the at least one image segment, wherein the brightnesses or the relative brightnesses are indicative of the level of focussing of the white light source in the at least one image,
and when determining the distance between the at least one camera and the white light source, the at least one processor is configured to correct the estimated distance according to the level of focussing of the white light source in the at least one image and the focus of the at least one autofocus polychromatic camera, to obtain a corrected distance between the between the at least one camera and the white light source, the corrected distance being used to determine the pose of the at least one controller in the global coordinate space.