Firstly, a new surface detecting and tracing algorithm is proposed in this dissertation based the connectivity characteristics of the edge surface.

首先，本文基于连续边缘曲面的连通特性，提出了一个三维图像中阶梯型边缘曲面的检测与追踪算法。

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It has blue and red fairy lights around the edge and projects holographic figures onto its surface.

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Even then, the sled has precious little lateral stability, and when it gets crossed up even slightly on a groomed, icy surface, it catches an edge and flips over.

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If future testing goes well and "if my wife allows, " Mr. Branson joked, he and his two children plan to be among the first six voyagers to ride the maiden flight of SpaceShipTwo to the edge of space, or about 60 miles above the Earth's surface, at a maximum speed of about 2, 500 miles per hour.

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