Object Surface Representation Using Occlusion Analysis of Spatiotemporal Images (Special Isse on Multimedia Computing and Communications)

概要

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Three dimensional model based coding methods are proposed as next generation image coding methods. These new representations need 3D reconstruction techniques. This paper presents a method that extracts the surfaces of static objects that occlude other objects from a spatiotemporal image captured with straight-line camera motion. We propose the concept of occlusion types and show that the occlusion types are restricted to only eight patterns. Furthermore, We show occlusion type pairs contain Information that confirms the existence of surfaces. Occlusion information gives strong cues for segmentation and representation. The method can estimate not only the 3D positions of edge points but also the surfaces bounded by the edge points. we show that combinations of occlusion types contain information that can confirm surface existence. The method was tested successfully on real images by reconstructing flat and Curved surfaces. Videos can be hierarchically structured with the method. The method makes various applications possible, such as object selective image communication and object selective video editing.
社団法人電子情報通信学会の論文
1996-06-25