多基线-数字近景摄影测量

Multi-Baseline Digital Close-Range Photogrammetry

根据交会精度与影像匹配自动化的需要,与当今航空数码相机沿航线方向视场角偏小的事实,阐述了大重叠、多基线摄影测量的必要性及其现实意义;重点介绍了利用非量测相机进行多基线的正直、交向摄影方法与数据处理的特点,特别是“多基线交向摄影”,通过多次、多相机对三峡工程地下电站尾水边坡进行拍摄试验,获得了传统非量测相机难以比拟的、非常满意的结果。

To meet the needs of the intersection accuracy and images automatic matching, and based on the fact that angle of view of current aerial digital camera is small in flight direction, the paper discusses the neces- sity and significance of photogrammetry based on high overlap images and Multi-Baseline. The method of normal case photography and convergent photography based on Multi-Baseline with non-metric camera is discussed emphatically, and the characteristic of the data processing by this method is also introduced. In particular, through the experiments with different no-metric cameras on Tail Water Slop of Three Gorges Underground Power Station, it is proved that convergent photography based on Multi-Baseline has acquired the very approving accuracy that is difficult to be acquired by conventional no-metric camera.