GPS-supported Bundle Adjustment Method of UAV by Considering Exposure Delay

• Main Authors: ZHANG Chunsen, ZHU Shihuan, ZANG Yufu, XIAO Xiongwu, XUE Wanchang
• Format: Article
• Language: zho
• Published: Surveying and Mapping Press 2017-05-01
• Series: Acta Geodaetica et Cartographica Sinica
• Subjects: exposure delay; GPS-supported bundle adjustment; low-altitude photogrammetry; accuracy of aero-triangulation
• Online Access: http://html.rhhz.net/CHXB/html/2017-5-565.htm

The existing GPS-supported bundle adjustment method does not take into account the influence of camera exposure delay error impact in UAV photogrammetry is inconsistent which leading to the actual adjustment results are worse than the theoretical results. The mechanism of exposure delay is studied. The impact of exposure delay on GPS-supported bundle adjustment is analyzed. And a GPS-supported bundle adjustment method by considering the exposure delay is proposed. The effectiveness of the proposed method is verified by a typical dataset of 142 images. The meaning of the proposed method is that it can achieve the better aero-triangulation accuracy than the traditional GPS-supported bundle adjustment method.