Beijing Research Center for Information Technology in Agriculture

Information Technology Research Center, Beijing Academy of Agriculture and Forestry Sciences

Guijun Yang

Xiaodong Yang

Haikuan Feng

Xingang Xu

Hao Yang

Bo Xu

Chunjiang Zhao

Hua Yan

Haiyang Yu

Xiaohe Gu

Xiaoyu Song

Huiling Long

This application provides an image fusion method, a hyperspectral lidar sensor, and a hyperspectral lidar system. The method includes: calibrating time of a laser scanner, a spectrometer, and an inertial measurement unit (IMU) based on time of an atomic clock of a global positioning system (GPS); controlling the laser scanner to perform scanning imaging on a detection area to obtain a three-dimensional (3D) point cloud image, and controlling the laser scanner to trigger the spectrometer to perform spectral imaging on the detection area to obtain a hyperspectral image; controlling the GPS and the IMU to perform signal collection to obtain a GPS signal and an IMU signal; and sending the 3D point cloud image, the hyperspectral image, the GPS signal, and the IMU signal to an image processing device, which fuses the 3D point cloud image and the hyperspectral image based on the GPS signal and the IMU signal.

Image fusion method, hyperspectral lidar sensor, and hyperspectral lidar system

Related are a drone-mounted imaging hyperspectral geometric correction method and a system, comprising: collecting position attitude information of a current drone low-precision POS sensor in real time; based on the position attitude information, parsing precise photography center position attitude information of a digital photograph, and generating a DEM of an area covered by the photograph; based on the precise photography center position attitude information, performing correction on position attitude data corresponding to multiple imaging hyperspectral scan lines between photography centers of adjacent digital photographs, and obtaining high-precision linear array position attitude information of the multiple imaging hyperspectral scan lines; based on the high-precision linear array position attitude information and the DEM, establishing a collinearity equation and generating a hyperspectral image.

Drone-mounted imaging hyperspectral geometric correction method and system

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Beijing, China

Guijun Yang