2 results about "Cast shadow" patented technology

A method and an apparatus for processing a 3D scene are presented. Techniques are disclosed for determining light source locations, including tracking a current viewpoint of a camera capturing object(s) in a 3D scene and determining a reference viewpoint relative to the current viewpoint of the camera. According to aspects, a light source location is determined by obtaining a registered map of real cast shadows of the object(s) from an input image captured by the camera, registered with respect to the reference viewpoint. Then, for candidates of light sources, obtaining respective maps of virtual shadows of the object(s) created with respect to the reference viewpoint, and determining the location of the light source based on the candidates of light sources with respective maps of virtual shadows that match the registered map of real cast shadows.

The present disclosure generally provides a system for providing continuously optimized illumination by autonomously and / or remotely controlling an illumination source, such as a motorized ceiling-mounted arm with a light attached to its end. Autonomously and / or remotely controlling illumination is accomplished by tracking a user's area of focus through two cameras, autonomously positioning and / or repositioning the illumination source to follow the user's area of focus, autonomously positioning and / or repositioning to avoid casting shadows, and utilizing remote sensing technology, such as LiDAR technology, to avoid collisions during positioning and / or repositioning. The system can also be controlled by a remote operator and can toggle between autonomous and remote-controlled operation on command.