Towards Structure and Motion Estimation from Dynamic Silhouettes
نویسندگان
چکیده
W e address the problem of estimating the structure and motion of a smooth curved object from its silhouettes observed over time by a trinocular imagery. W e first construct a model for the local structure along the silhouette for each frame in the temporal sequence. The local models are then integrated into a global surface description by estimating the motion between successive frames. The algorithm tracks certain surface and image features (parabolic points and silhouette inflections, frontier points) which are w e d to bootstrap the motion estimation process. The whole silhouette is then used to refine the initial motion estimate. W e have implemented the proposed approach and report preliminary results.
منابع مشابه
Structure and Motion from Silhouettes
Silhouettes (or outlines) are often a dominant image feature, and can be extracted relatively easily and reliably. They provide rich information about both the shape and motion of an object, and are indeed the only information available in the case of smooth textureless surfaces. Nonetheless, due to the viewpoint dependence of silhouettes, they do not readily provide point correspondences, and ...
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