Detection system capable of obtaining single-point spectrum and 3D data synchronously

Abstract

Provided is a detection system capable of obtaining a single-point spectrum and 3D data synchronously. The system includes an integrated detection instrument for multiple parameters in the field of near-earth-surface remote sensing, and spectrum data and 3D structure data registered automatically can be obtained. The detection system is mainly composed of a front imaging lens, a slit, a collimating lens, a dispersion component, a rear imaging lens, a CCD detector, a laser, a 2D mechanical motion device and a computer; the detection system realizes light splitting via the dispersion component,and obtains the spectrum data of a measured point; depth information of the measured point is obtained via a laser triangle principle, and the 3D data is obtained by combining a 2D coordinate providedby a mechanical scanner; the laser, the slit and the optical axis of the an imaging system are arranged in the same plane, so that the system can obtain the spectrum and 3D information of an object point at the same time; and via 2D scanning by the mechanical motion device, the complete 3D structure data and the spectrum data in point-to-point correspondence and of automatic registration of the measured object are obtained.

Description

technical field [0001] The invention belongs to the field of near-earth remote sensing detection, and relates to a detection system capable of synchronously acquiring single-point spectrum and three-dimensional data, capable of providing automatically aligned spectrum and three-dimensional structure data, and solving the data caused by independent measurement of the two in the traditional detection process Questions that cannot be matched exactly. Background technique [0002] Spectroscopy and 3D structure detection are important means of data acquisition in many research fields. For example, in the field of agricultural remote sensing, the spectral data obtained by detection can be used to monitor crop health, diseases and insect pests, etc.; the use of three-dimensional structural data can analyze crop growth and predict crop yield. In the field of botanical research, spectral data can be used to invert vegetation biochemical parameters, including chlorophyll content, nit...

AI Technical Summary

Problems solved by technology

[0004] However, these traditional detection methods can only obtain the spectrum or three-dimensional structure information of the measured object alone, and have not realized the simultaneous acquisition of the two data

Affected by the different fields of view, different detection angles, different spatial resolutions, and observation time errors of the two detection methods, the two types of information obtained independently cannot truly reflect the state of the same object point at the same time

This inconsistency in space and time makes it impossible to accurately match the two types of data point-to-point, which seriously affects the overall accuracy of the data set and inhibits its application ability.

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