For aerial photograph pair, the Orthophotomap of the image - overlapped region can be made by calculating directly spot height at image point.
对于航摄像对，可以直接通过像对解算像点的地面点高程，进而制作影像重叠区的正射影像。
Orthophotomap has been increasingly used to practical production because it keeps rich aerial photograph information and has the feature of topographic map.
正射影像图因为保留了航摄像片丰富的影像信息又具有地形图的特征，因此，在实际生产中得到了越来越广泛的应用。
Orthophotomap has been increasingly used to practical production because it keeps rich aerial photograph information and has the feature of topographic map.
正射影像图因为保留了航摄像片丰富的影像信息又具有地形图的特征，因此，在实际生产中得到了越来越广泛的应用。
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