360-degree environment topography self-rotation laser scanning method

Abstract

Targeting the problems of low speed and low accuracy of laser scanning in the prior art, the invention discloses a 360-degree environment morphology self-rotation laser scanning method. The 360-degree environment morphology self-rotation laser scanning method comprises steps of using a focus adjustment mechanism to adjust cross points of light beams of cross laser which is emitted by each laser scanning device to a center of each environment morphology to be scanned so as to divide each environment morphology to be scanned into four quadrants, and D, enabling the cross laser emitted by the laser scanning device to radiate to the environment morphology to be scanned to form a cross point as a center of a circle. The cross laser resolves a distance between the laser scanning device and the environment morphology to be scanned once after rotating 0.5-1 degree each time until a cross laser line rotates around the rotating axis of itself for 90 degrees and then rotates for 90 degrees in a reverse direction in the same way to finish a measurement cycle. The 360-degree environment morphology self-rotation laser scanning method rotates the incident cross laser for 90 degrees so as to obtain point cloud data of the whole surface morphology of an object to be scanned, realizes perception of the three-dimensional morphology of a detected object, and has a characteristic of fast measurement speed.

Description

technical field [0001] The invention belongs to the field of optical scanners and sensing devices, and in particular relates to a 360-degree environmental topography self-rotating laser scanning method. Background technique [0002] Traditional laser scanning surveying and mapping uses the time difference method or triangulation method to measure distance, and mostly uses line-structured lasers to scan along horizontal or vertical directions to achieve three-dimensional measurement. Due to the constraints of scanning accuracy and speed, it is difficult to achieve rapid measurement. [0003] Such as figure 1 , which is the principle of triangulation distance measurement. The light emitted by the laser transmitter A is collimated and converged by the lens and then irradiates the measured point B on the surface of the measured object. Light spots are formed on the sensor (CCD\CMOS and other devices). The coordinate axes of the world coordinate system and the image plane coord...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems of slow laser scanning speed and low precision in the prior art, the present invention provides a 360-degree self-rotating laser scanning method for environmental topography, which has fast measurement speed and high measurement accuracy

Images