Based on the theory of mathematical morphology,a series of morphologic transforming models were constructed to extract coordinate grid linesautomatically from scanned mining maps in which the coordinate grid linesare perpendicular to each other and long enough in both horizontal and vertical directions.

依据数学形态学的基本理论，根据坐标格网线在矿图上沿水平和垂直方向均有足够的长度且相互垂直相交的特点，构造了一系列形态变换模型，用于从矿图扫描图像中提取坐标格网线。

This article introduced the conception of reference frame which were used for controlling and commanding the air defense missile, expatiated on the arithmetic and implementation for the transformation from nine nine pane coordinateto station center right-angle coordinate in horizon.

介绍了在防空导弹射击指挥中目标数据常用坐标系的概念 ,详细讨论了九九方格坐标转换为站心地平直角坐标的算法及实现过程 ,为实现对防空导弹武器的自动化指挥提供参考。