| 1. | Specifications for computer - aided mapping of large - scale topographic maps
大比例尺地形图机助制图规范 |
| 2. | Discussion about the method of using construction surveying data to update city vector topographic map
技术在测绘大比例尺地形图的应用探讨 |
| 3. | Our experiments show that the photogrammetry with digital camera has a better precision and the large scale topographic map and orthograph can be produced with it
试验证明利用数码相机进行摄影测量精度很高，能够用来测制大比例尺地形图和正射影像图。 |
| 4. | This paperpr proposes a method to discover automatically feature change based on topographic map database , field patrol , topographic map surveying by compared the original data from database with the surveying data later
摘要提出了基于地形图数据库、地面巡视、地形图修测对原始数据和修测数据比对进行城市大比例尺地形图数据库地物变化自动识别的方法。 |
| 5. | An example indicates that the updated map , taking on the same data structure with original terrain map and the precision being satisfied with demands of terrain map , can be applied to land planning and mgis used as basic datum
实例应用表明，更新后的图形数据结构与原地形图完全相同，其精度满足大比例尺地形图的要求，可作为开采沉陷区土地规划和建立矿区地理信息系统的基础图件。 |
| 6. | By means of images processing of satellite , geometrical correction of images from uav rs system was accomplished by polynomial . in the processing of images of wuming in guangxi province , a set of scan large - scale relief maps were used
借鉴卫星影像的处理方法，将目标区现有的大比例尺地形图数字化后，利用多项式法完成了广西武鸣城区无人机遥感飞行试验影像的几何纠正，并取得了较好的效果。 |
| 7. | As the basic image , large - scale relief maps were not good , with some disadvantages of accuracy and surface features . if a high - resolution satellite image could be used to registration as a basic map , the accuracy of corrected image map would be improved obviously
作为基准影像，大比例尺地形图在自身成图精度和所含特征信息等方面有一定的局限性，如使用高分辨率卫星影像作为基准底图进行配准纠正，则成图精度会有进一步提高。 |
| 8. | In order to solve the problem of symbolic representation in geographic concepts and their mutual relationships , the geometrical composition of symbols of large scale topographic maps and the semantic and geometrical relationships among symbols are analyzed , the symbols system of topographic maps is regarded as a two - dimensional graphic language , and the relationship between symbols and geographic concepts is discussed
摘要为了解决地理概念及其相互关系的符号化表达问题，分析了大比例尺地形图符号的几何构成及符号间的几何和语义关系，把地形图符号系统作为一种二维图形语言，讨论了它和地理概念之间的关系。 |
