Shape Recovery from Turntable Image Sequence

摘要

This paper makes use of both feature points and silhouettes to deliver fast 3D shape recovery from a turntable image sequence. The algorithm exploits object silhouettes in two views to establish a 3D rim curve, which is defined with respect to the two frontier points arising from two views. The images of this 3D rim curve in the two views are matched using cross correlation technique with silhouette constraint incorporated. A 3D planar rim curve is then reconstructed using point-based reconstruction method. A set of rims enclosing the object can be obtained from an image sequence captured under circular motion. The proposed method solves the problem of reconstruction of concave object surface, which is usually left unresolved in general silhouette-based reconstruction methods. In addition, the property of the organized reconstructed rim curves allows fast surface extraction. Experimental results with real data are presented.