An Integrated Calibration Technique for Stereo Vision Systems (PREPRINT)

Abstract : This paper presents the integration and evaluation of two popular camera calibration techniques for stereo vision system development for motion capture. An integrated calibration technique for stereo vision systems has been developed. To demonstrate and evaluate this calibration technique, multiple Wii Remotes (Wiimotes) from Nintendo were used to form stereo vision systems to perform 3D motion capture in real time. This integrated technique is a two-step process: it first calibrates the intrinsic parameters of each camera using Zhang's algorithm and then calibrates the extrinsic parameters of the cameras together as a stereo vision system using Svoboda's algorithm. Computer software has been developed for implementation of the integrated technique, and experiments carried out using this technique to perform motion capture with Wiimotes show a significant improvement in the measurement accuracy over the existing calibration techniques.