A Method for Generating True Digital Orthophoto Map of UAV Platform Push-Broom Hyperspectral Scanners Assisted by Lidar
- Resource Type
- Conference
- Authors
- Wang, Chen; Gu, Yanfeng
- Source
- IGARSS 2022 - 2022 IEEE International Geoscience and Remote Sensing Symposium Geoscience and Remote Sensing Symposium, IGARSS 2022 - 2022 IEEE International. :7523-7526 Jul, 2022
- Subject
- Aerospace
Components, Circuits, Devices and Systems
Computing and Processing
Engineered Materials, Dielectrics and Plasmas
Fields, Waves and Electromagnetics
Geoscience
Photonics and Electrooptics
Power, Energy and Industry Applications
Signal Processing and Analysis
Point cloud compression
Laser radar
Image processing
Geoscience and remote sensing
Autonomous aerial vehicles
Distortion
Hyperspectral imaging
Unmanned aerial vehicle (UAV)
pushbroom hyperspectral scanner
true digital orthophoto map (TDOM)
Lidar
- Language
- ISSN
- 2153-7003
UAV platforms equipped with hyperspectral sensors are widely welcomed in various fields for rich spectral and spatial information. This paper presents a method for generating true digital orthophoto map of push-broom hyperspectral scanners assisted by Lidar, which is suitable for UAV platforms with low flight altitude. Different from the traditional digital orthophoto map generation method, this method utilizes Lidar to obtain the elevation information lost in the hyperspectral imaging process. GNSS/INS unit is used for direct georeferencing to remove geometric distortions caused by platform instability. Furthermore, we reduce the projection errors caused by sudden changes in elevation assisted by Lidar data. The UAV flight test in urban scenes verifies the effectiveness and accuracy of the method.