ISPRS-Archives

ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences

ISPRS-Archives

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

2194-9034

Copernicus Publications

Göttingen, Germany

10.5194/isprs-archives-XLI-B1-789-2016

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

Bo-Yi

¹ Ning

Zhang

² Guo-Zhong

Shanxi province Basic Geographic Information Institute, 030001Taiyuan China

China Land Surveying and Planning Institute, Ministry of Land and Resources, 100035 Beijing

Chinese Academy of Surveying & Mapping,100039 Beijing

06 06 2016

XLI-B1 789 796

This article is available from https://isprs-archives.copernicus.org/articles/isprs-archives-XLI-B1-789-2016.html

The full text article is available as a PDF file from https://isprs-archives.copernicus.org/articles/isprs-archives-XLI-B1-789-2016.pdf

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.