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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Heretofore, the error of the size of apertures is represented as a relative shift between the focus and the edge surface of the mirror, and then the image quality is computed accordingly.

把口径误差表示为焦点与端面的相对位移，可以定量计算口径误差对象质的影响。

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The surface mark of an established plume is a hot spot—an isolated region of volcanoes and uplifted terrain located far from the edge of a surface plate.

一个已形成的烟羽的表面标志是一个热点——一个远离表面板块边缘的火山和隆起地形的孤立区域。

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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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