Volume XLI-B1
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLI-B1, 789-796, 2016
https://doi.org/10.5194/isprs-archives-XLI-B1-789-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLI-B1, 789-796, 2016
https://doi.org/10.5194/isprs-archives-XLI-B1-789-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

  06 Jun 2016

06 Jun 2016

RESEARCH ON THE KEY TECHNOLOGY OF LARGE SCALE MAPPING FROM LOW ALTITUDE PHOTOGRAMMETRY

Wu Bo-Yi1, Zhang Ning2, and Su Guo-Zhong3 Wu Bo-Yi et al.
  • 1Shanxi province Basic Geographic Information Institute, 030001Taiyuan China
  • 2China Land Surveying and Planning Institute, Ministry of Land and Resources, 100035 Beijing
  • 3Chinese Academy of Surveying & Mapping,100039 Beijing

Keywords: Large-scale Photogrammetry, Wide-angle Camera, Elevation Accuracy, Low Altitude Photogrammetry Production Process, Low Altitude Photogrammetric DLG Production, Multi-center Image Projection Reconstruction

Abstract. Based on the theoretic analysis of the accuracy in large scale photogrammetric mapping, some defects in traditional procedure were discussed. A set of key technologies dedicate to accuracy improvement in low altitude photogrammetry were analyzed in detail, namely the utilization of wide angle camera and low altitude flight, enhancement in image matching, predesigned layout of Ground Control Points (GCPs) in field survey, optimization of adjustment model and improvement in map processing. Besides, a low altitude aerial unmanned airship system was established. Finally, successful implementation in 1:500 topographic mapping project in built-up areas of 30 counties in Shanxi Province proves the practicability and effectiveness of the proposed approaches.