A Stable Real-Time Laser Measurement Method Based on Uncoded Parallel Multi-Line

Abstract

The invention provides a stable real-time laser measurement method based on non-coding parallel multi-line. In the measurement, the data of central pixel points is obtained through light plane constraint and polar line constraint, and central pixel points are matched, and then a three-dimensional model is reconstructed. According to the present invention, the problems of inconvenient carrying and complex operation process of the scanning equipment are solved with the stable real-time laser measurement method, the problem that the single line laser scanning speed is slow is solved in the breakthrough manner by using the parallel multi-line method, the laser strip central pixel point matching precision and the reconstruction efficiency are improved, and by using the filter adding method, the interference caused by the surrounding ambient light is reduced, and the scanning stability and the labeled point recognition rate are improved.

Description

technical field [0001] The invention relates to the field of optical detection, in particular to a stable real-time laser measurement method based on non-coded parallel multi-lines. Background technique [0002] At present, 3D laser scanning equipment can be divided into two types: fixed and handheld. The 3D scanning of fixed 3D laser scanning equipment is realized by a standard 2D scanner and a mechanical brake. It is a static measurement that requires multiple images. The scanning measurement takes a long time. The scanning results are greatly affected by ambient light and need to rely on brackets For work, it is troublesome to carry, cumbersome to operate, unable to obtain dead angle information, and difficult to achieve three-dimensional measurement of narrow spaces. Handheld single-line 3D laser scanners are easy to carry and are not restricted by geographical location. They can scan small and medium-sized objects. However, this kind of scanning equipment uses single-l...

AI Technical Summary

Problems solved by technology

The 3D scanning of fixed 3D laser scanning equipment is realized by a standard 2D scanner and a mechanical brake. It is a static measurement that requires multiple images. The scanning measurement takes a long time. The scanning results are greatly affected by ambient light and need to rely on brackets For work, it is troublesome to carry, cumbersome to operate, unable to obtain dead angle information, and difficult to achieve 3D measurement of narrow spaces

Handheld single-line 3D laser scanners are easy to carry and are not limited by geographical location. They can scan small and medium-sized objects. However, this kind of scanning equipment uses single-line scanning technology, which requires multiple scans to complete the data, and its accuracy is low and the cumulative error is large. , it is difficult to perform three-dimensional measurement of medium and large objects

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