Spectral three-dimensional imaging system and method

Abstract

The invention relates to a spectral three-dimensional imaging system and method. The imaging method is characterized by comprising the steps that (1) a three-dimensional laser scanning system acquires three-dimensional information of a plurality of sub regions of a detected target simultaneously and generates a three-dimensional model of targets in each sub region; (2) a rotating platform is used for adjusting the visual field of a spectral imaging system, and the spectral imaging system is aligned to all the scanned sub regions in sequence to acquire spectral images of all the sub regions; (3) a computer control system is used for matching the three-dimensional information of each point in each sub region with the spectral image of the corresponding sub region to generate spectral three-dimensional models of all the sub regions, and finally, the spectral three-dimensional models of all the sub regions are combined to obtain a spectral three-dimensional model of the whole detected target. According to the imaging method, surface three-dimensional information and multispectral information of the target are acquired, and the multispectral information is matched into the three-dimensional model, so that spectral three-dimensional imaging is realized.

Description

technical field [0001] The invention relates to a spectral three-dimensional imaging system and imaging method, in particular to a spectral three-dimensional imaging system and imaging method using laser three-dimensional scanning technology and spectral imaging technology, belonging to the field of spectral analysis and three-dimensional imaging. Background technique [0002] 3D laser scanning technology is a new high-precision, high-resolution method to achieve 3D spatial information acquisition and 3D modeling. It is the latest technology in scene modeling and 3D data acquisition. It uses an active non-contact measurement method to obtain high-precision three-dimensional data, and a high-speed scanning device is added to the laser light path to quickly and high-density obtain three-dimensional data of the target surface. Its application fields include engineering surveying and mapping, computer graphics, reverse engineering, mold design, archaeology, etc. [0003] Tradit...

AI Technical Summary

Problems solved by technology

Although these two methods can obtain the color 3D information of the measured target and improve the color effect of the 3D stereoscopic model, it is impossible to truly restore the color information of the measured target under the condition of unsatisfactory lighting conditions by using a color camera. In addition, The pictures taken by the color camera cannot obtain the spectral information of multiple bands of the target, and the detection and identification of the target are not obvious

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