A stereo-callibration-less multiple-camera human-tracking system for human-computer 3D interaction

摘要

A system which comprises one or more fixtures 1,2, wherein each fixture forms at least one empty inner right angle shape and has at least one camera 8 attached to it in a known position and orientation. Two fixtures may be attached to each corner of a television display and may be backed by a magnet, ferrous metal, adhesive or suction pumps. The cameras may use fisheye lenses. The system may automatically calculate the TV screen size by using the camera on a first fixture and determining the pixel location of known features on a second fixture, or using an ultrasonic transmitter 4 and receiver 3. Based on the known position of each camera, the system may estimate a user's 3D viewing location and match this to the location of a virtual camera set relative to a virtual 3D environment. The system may estimate the 3D locations of stereoscopic glasses or devices 13,14 held/worn by the user. This system does not require the stereo calibration step that hinders multiple camera 3D tracking systems.