Hyperspectral camera radiation calibration device, method and system

Abstract

The invention discloses a hyperspectral camera radiation calibration device, method and system. The device comprises a hyperspectral camera, a light source, a time calibration plate, a space calibration plate and a sample table. The hyperspectral camera and the light source are positioned right above the sample table. The sample table is rectangular. The time calibration plate is positioned on oneside of the long edge of the sample table, and is positioned on the edge of the view field of the hyperspectral camera. The space calibration plate is positioned on one side of the short edge of thesample table. One side of the short edge of the sample table is adjacent to and perpendicular to one side of the long edge of the sample table. The time calibration plate and the hyperspectral cameraare stationary. The space calibration plate performs scanning motion along with the sample table. According to the invention, the information of the time calibration board and the space calibration board is collected, time calibration and space calibration are combined, the radiation calibration precision of the hyperspectral camera is greatly improved, the problem that the current radiation calibration of the hyperspectral camera is greatly influenced by the brightness change of a light source and space distribution is solved, and the radiation calibration precision of the hyperspectral camera is remarkably improved.

Description

technical field [0001] The invention relates to the field of hyperspectral camera radiation calibration, in particular to a hyperspectral camera radiation calibration device, method and system. Background technique [0002] A hyperspectral camera (also known as a hyperspectral camera) can not only obtain the spatial distribution information of ground objects, but also obtain the spectral information of ground objects simultaneously. Hyperspectral cameras are mainly used to analyze material components, and play an important role in agricultural pest detection, forestry tree species identification, water environment detection and other fields. At present, the mainstream hyperspectral imaging systems are mostly push-broom type, that is, a single photo is taken to obtain the spatial information and spectral information of a line in the space dimension, so a push-broom mechanism is required to realize global imaging. Hyperspectral systems can be divided into two categories accor...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a hyperspectral camera radiation calibration device, method and system to solve the problem that the existing hyperspectral camera radiation calibration method is greatly affected by light source brightness changes and spatial distribution, resulting in large radiation calibration errors

Images