UAV FOR MAPPING —LOW ALTITUDE PHOTOGRAMMETRIC SURVEY

Two kinds of platform are accepted for mapping UAV system. One is remotely-piloted aircraft. Another is unmanned helium airship. A super-wide-angle camera is constructed by four digital cameras, mounted in different optical axis directions. A high accuracy calibration method is used to make compensation for the deformed errors due to the light and simple constructed mechanical frame. According to the feature of data get from the UAV acquisition system, a special aerial triangulation program has been developed. The DSM is automatically generated by image matching and TIN interpolation. It needs a little manual interaction operation to separate the points upon the building or lie down at grand for generation DEM. The DOM is also produced automatically based on the orientation elements and DEM results. As a research results, the UAV mapping system MAP-UAV has carried out several experiments