A New Approach for Active Stereo Camera Calibration

— By active stereo we mean a stereo vision system that allows for independent panning and tilting for each of the two cameras. One advantage of active stereo in relation to regular stereo is the former’s wider effective field of view; if an object is too close to the camera baseline, the depth to the object can still be estimated accurately by panning the cameras appropriately. Another advantage of active stereo is that it can yield a larger number of depth measurements simultaneously for each position of the platform on which the camera system is mounted. Panning and tilting over a large angular range, while being the main reason for the advantages of active stereo, also make it more challenging to calibrate such systems. For a calibration procedure to be effective for active stereo, the estimated parameters must be valid over the entire range of the pan and tilt angles. This paper presents a new approach to the calibration of such vision systems. Our method is based on the ratio...

• Type: Conference
• Year: 2007
• Where: ICRA
• Authors: Hyukseong Kwon, Johnny Park, Avinash C. Kak
• Keywords: Active Stereo, Active Stereo Calibration, ICRA 2007, Robotics, Stereo Vision