We describe a 3-D object reconstruction method using a stationary camera anda planar mirror. No external calibration is required. The mirror providesthe extra views needed for a multiple-view reconstruction. We examine theimaging geometry of the camera-mirror setup and prove a theorem that givesus the constraints for computing the orientation of the mirror. Theconstraints are derived from the convex hull of the silhouettes of theimages of the object and its mirror reflection. The distance between themirror and the camera can be then obtained by a single object point or apair of points on the mirror. After the pose of the mirror isdetermined, we have multiple calibrated views of the object. We present areconstruction method customized for the special imaging geometry.
['Bo Hu']
It's All Done with Mirrors: Calibration-and-Correspondence-Free 3D Reconstruction