A hyperspectral imaging device based on scrolling scanning

Abstract

The invention discloses a hyperspectral imaging device based on rolling scanning, and the device is disposed on a flying platform which flies at a constant speed. The device comprises a motor, a rotating shaft, a roller, a hyperspectral camera, and a color camera. The motor is disposed on the flying platform. One end of the rotating shaft is connected with the motor, and the other end of the rotating shaft is connected with the roller. The hyperspectral camera and the color camera are symmetrically disposed on the surface of the roller, wherein the central shaft of the roller is taken as the symmetric axis. The motor drives the rotating shaft to drive the roller to carry out the 360-degree rotation at a constant speed, thereby enabling the imaging speeds of the hyperspectral camera and thecolor camera to be uniform, and enabling the breadth of images to be large. In addition, the device also comprises a camera imaging range determining mechanism which determines the imaging ranges ofthe hyperspectral camera and the color camera according to the actual imaging demands, thereby enabling the scanning view field angle of the device to be flexible and controllable. Therefore, the device provided by the invention is simple in structure, is uniform in imaging speed, is wide in image breadth, is flexible and controllable in scanning view field angle, and is wide in application range.

Description

technical field [0001] The invention relates to the technical field of hyperspectral scanning imaging, in particular to a hyperspectral imaging device based on scrolling scanning. Background technique [0002] Scanning imaging relies on the detection element and scanning lens to sample the target object point by point and line by line in the unit of instantaneous field of view, so as to obtain the electromagnetic radiation characteristic information of the target object, and then form an image of a certain spectrum. [0003] Existing hyperspectral scanning methods are mostly push-broom scanning, optical-mechanical scanning, and staring imaging. The push-broom imaging system uses an area array detector to scan two-dimensional space while the flying platform is moving forward. The width is narrow; the optical-mechanical scanning mirror in the optical-mechanical imaging system rotates at high speed under the drive of the motor to complete the space-dimensional imaging in the d...

AI Technical Summary

Problems solved by technology

The push-broom imaging system uses an area array detector to scan two-dimensional space while the flying platform is moving forward. The width is narrow; the optical-mechanical scanning mirror in the optical-mechanical imaging system rotates at high speed under the drive of the motor to complete the space-dimensional imaging in the direction of the track, but the exposure time, spatial resolution and system sensitivity are mutually restricted, and the structure is complex. The one-dimensional motion mechanism leads to an increase in the overall volume and weight; the spectroscopic system in the staring imaging system is generally a filter, and the relevant information of the spectral dimension can be obtained by changing the characteristics of the filter to pass radiation of different wavelengths. The platform has high requirements for stability, and generally can only be used on the ground and in the laboratory

Images