Multi-Camera Calibration Using a Globe
Résumé
The need for calibration of multiple cameras working together in a network, or for the acquisition of free viewpoint video for 3D TV, is becoming increasingly important in recent years. In this paper we present a novel approach for calibrating multiple cameras using an ordinary globe that is usually available in every household. This method makes it possible to reduce multi-camera calibration to a level that is attainable by non-technical users. Our technique requires only one view of the globe for each camera, unlike earlier approaches that need multiple views of a calibration object. Previous methods that use spherical calibration objects can only calibrate the intrinsic parameters of cameras, but our technique is capable of calibrating both the intrinsic and extrinsic parameters simultaneously in a multi-camera setup. Experimental results verifying the accuracy of our algorithm are also presented.
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