3D laser and 2D imaging synchronized scanning device and scanning method thereof

Abstract

The invention discloses a 3D laser and 2D imaging synchronous scanning device and a scanning method thereof. A laser receiving and sending matrix is installed on a 3D laser radar, the point laser receiving and sending matrix and a line scanning imaging sensor are installed on the same rotatable platform in parallel, the height of the point laser receiving and sending matrix and the line scanning imaging sensor is the same, the positions are close or connected, the rotatable platform can drive the point laser receiving and sending matrix and the line scanning imaging sensor to synchronously rotate, the synchronous scanning device further comprises a control device, the control device comprises a synchronous clock module, the synchronous clock module is connected to the 3D laser radar and the line scanning imaging sensor signal, the control device can synchronously send the signal to the 3D laser radar and the line scanning imaging sensor through a synchronous clock module, so that the 3D laser radar and the line scanning imaging sensor can synchronously scan, and therefore the obtained data has synchronism and facilitates the fusion of radar laser scanning data and line scanning image data.

Description

technical field [0001] The invention belongs to the technical field of laser radar, and in particular relates to a 3D laser and 2D imaging synchronous scanning device and a scanning method thereof. Background technique [0002] The working principle of laser radar is very similar to that of radar. With laser as the signal source, the laser emits pulsed laser light, which hits trees, roads, bridges and buildings on the ground, causing scattering, and part of the scattered light waves will be reflected to the receiver of laser radar. On the device, according to the calculation of the laser ranging distance, the distance from the laser radar to the target point can be obtained. With the radar as the origin, the coordinate data of the target can be obtained. The pulse laser continuously scans the target object, and all the targets on the target object can be obtained. Point data, and after imaging processing with this data, an accurate three-dimensional image can be obtained. ...

AI Technical Summary

Problems solved by technology

Generally, this kind of camera is only used in two situations: 1. The field of view to be measured is a slender strip, which is mostly used for detection on the roller

2. It requires a large field of view or high precision (must have relative movement)

Although the data can be acquired synchronously, the axes of the two are not the same, resulting in the misalignment of the coordinate levels when acquiring the data, and there are problems such as complicated calibration, inconsistent field of view, and out-of-sync data acquisition.

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