Firstly, a new surface detecting and tracing algorithm is proposed in this dissertation based the connectivity characteristics of the edgesurface.
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。
2
Heretofore, the error of the size of apertures is represented as a relative shift between the focus and the edgesurface 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。
3
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.