| 1. | In this distance , the unknown bore is forecasted by choosing known bores
通过在此相关距离内选择已知点，对未知点进行预测，得到预测结果。 |
| 2. | Z coordinate and direction angle of the instrument can be calculated and reset by measuring z coordinate of known points ( max . 10 points ) displayed
通过观测已知点的高程（最多10个点）来计算并重新设置测站点的高程与方位角。 |
| 3. | Resection is used to determine the coordinates of an instrument station by performing multiple measurements of points whose coordinate values are known
后方交会是利用在未知点上对若干已知点进行观测，获得的观测值来计算出未知点的坐标。 |
| 4. | Create a new coordinate by measuring to two points . the 1st point becomes the origin and the 2nd point becomes the n axis direction
通过观测两已知点即可确定一新点的坐标。坐标系为：第一个点作为坐标原点，而第一点到第二点的方向作为n （轴）方向。 |
| 5. | With the color and luminance difference of wheat field and outside the field , the position of field edge and the candidate points of it could be detected ; the slope of the field - edge was calculated by using passing a known point hough transform
根据麦田和田外区域的不同颜色及亮度特征，判断出田埂的位置以及田埂线的方向候补点群，使用过已知点的哈夫变换计算出田埂线的斜率。 |
| 6. | Combined frame modeling method and surface modeling method build up the topological relations of spacial point , line and surface on condition that the points on the surface of measured object is considered as known points after compared with other several modeling method
在比较了已有的几种三维建模方法后，结合线框建模和表面建模的方法，将近景摄影测量所测物体表面点作为已知点，构建空间点、线、面的拓扑关系。 |
| 7. | At the basis of analyzing different boundary tracking algorithms , boundary point estimate algorithm based on angle and boundary point searching algorithm based on circumferential neighborhood extending were advanced to avoid tracking trap and to improve the robust of the boundary tracking algorithm
通过分析不同算法的特点，提出了基于已知点夹角的边界点预估计算法和基于圆弧邻域扩展的边界点搜索算法，以避免跟踪进入搜索陷阱，提高边界跟踪对边界变化的鲁棒性。 |
