Camera Calibration and Stereo via a Single Image of a Spherical Mirror
This enables simple catadioptric stereo systems for practical applications, though it is incremental as it builds on existing mirror-based calibration methods.
The paper tackles camera calibration and stereo reconstruction using a single image with a spherical mirror, achieving precise calibration by leveraging the sphere's contour and reflections, with experimental results demonstrating feasibility and accuracy.
This paper presents a novel technique for camera calibration using a single view that incorporates a spherical mirror. Leveraging the distinct characteristics of the sphere's contour visible in the image and its reflections, we showcase the effectiveness of our method in achieving precise calibration. Furthermore, the reflection from the mirrored surface provides additional information about the surrounding scene beyond the image frame. Our method paves the way for the development of simple catadioptric stereo systems. We explore the challenges and opportunities associated with employing a single mirrored sphere, highlighting the potential applications of this setup in practical scenarios. The paper delves into the intricacies of the geometry and calibration procedures involved in catadioptric stereo utilizing a spherical mirror. Experimental results, encompassing both synthetic and real-world data, are presented to illustrate the feasibility and accuracy of our approach.