椭圆窗口作为一种新的手段用于含有面缺陷晶体的傅里叶滤波和衍射振幅校正。

Elliptical Windows are utilized as a new means for Fourier filtering and correcting the amplitudes of reflections.

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空间数据处理内容广泛，本文选择空间数据处理领域的数据格式转换、椭圆窗口线段裁剪、拓扑关系局部更新方法作为研究的内容。

Three parts have been researched which are the switchover of data format, elliptic window line segment-clipping and the method for updating local topological relation.

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首先对于矩形窗口，介绍了直线裁剪算法，圆和椭圆裁剪算法以及参数曲线的裁剪算法。

Firstly, to the rectangle window, algorithms for clipping lines, circles and ellipses, as well as parametric curves are introduced.

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