Enhanced field of view to augment three-dimensional (3D) sensory space for free-space gesture interpretation

摘要

The technology disclosed relates to enhancing the fields of view of one or more cameras of a gesture recognition system for augmenting the three-dimensional (3D) sensory space of the gesture recognition system. The augmented 3D sensory space allows for inclusion of previously uncaptured of regions and points for which gestures can be interpreted i.e. blind spots of the cameras of the gesture recognition system. Some examples of such blind spots include areas underneath the cameras and/or within 20-85 degrees of a tangential axis of the cameras. In particular, the technology disclosed uses a Fresnel prismatic element and/or a triangular prism element to redirect the optical axis of the cameras, giving the cameras fields of view that cover at least 45 to 80 degrees from tangential to the vertical axis of a display screen on which the cameras are mounted.

主权项

1. A rim mounted space imaging apparatus, mounted in a rim of a display that has a vertical axis, comprising:
two cameras mounted in the rim of a display with optical axes facing within 20 degrees of tangential to a vertical axis of the display; at least one Fresnel prismatic element that redirects the optical axes of the cameras, giving each camera a field of view that covers at least 45 to 80 degrees from tangential to the vertical axis of the display; and a camera controller coupled to the two cameras that compensates for redirection by the Fresnel prismatic element and determines a position of at least one control object within the camera fields of view.