Topic
Hull
About: Hull is a research topic. Over the lifetime, 13969 publications have been published within this topic receiving 82658 citations.
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09 Sep 2003
TL;DR: This work proposes an exact method for efficiently and robustly computing the visual hull of an object from image contours that is fast and allows real-time recovery of both manifold and watertight visual hull polyhedra.
Abstract: We propose an exact method for efficiently and robustly computing the visual hull of an object from image contours. Unlike most existing approaches, ours computes an exact description of the visual hull polyhedron associated to polygonal image contours. Furthermore, the proposed approach is fast and allows real-time recovery of both manifold and watertight visual hull polyhedra. The process involves three main steps. First, a coarse geometrical approximation of the visual hull is computed by retrieving its viewing edges, an unconnected subset of the wanted mesh. Then, local orientation and connectivity rules are used to walk along the relevant viewing cone intersection boundaries, so as to iteratively generate the missing surface points and connections. A final connection walkthrough allows us to identify the planar contours for each face of the polyhedron. Implementation details and results with synthetic and real data are presented.
225 citations
01 Sep 1981
TL;DR: In this paper, a simple method and a component analysis for predicting the roll damping of a ship at forward speed are described, assuming that the damping is composed of friction damping, eddy damping and lift damping.
Abstract: : Various methods for predicting the roll damping of a ship at forward speed are discussed. In particular, a simple method and a component analysis are described. The component analysis assumes that the damping is composed of friction damping, eddy damping, lift damping, wave damping, normal-force damping of bilge, keel, hull pressure damping due to bilge keels, and wave damping of bilge keels. Formulas for these components are derived from theoretical and experimental considerations. A listing of a computer program used to compute roll damping is included as an Appendix.
212 citations
TL;DR: In this article, a numerical model to simulate the process of ship-ice interaction in real-time is presented. But the simulation is limited to 6 degrees of freedom for all ice floes in the calculation domain.
193 citations
TL;DR: In this paper, an operational approach for obtaining an accurate fuel consumption and speed curve, on the basis of major factors affecting it, namely, ship's draft and displacement, weather force and direction, hull and propeller roughness.
187 citations
TL;DR: In this article, the authors summarized the procedures and recommendations given in the recently developed guideline from Det Norske Veritas on fatigue assessment of ship structures and provided a closed form approach for estimating the probability of fatigue failure of a detail within the design life of the ship.
166 citations