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Rotation three-dimensional laser measurement system and plane calibration method thereof

A measurement system and three-dimensional laser technology, which is applied in the field of laser measurement, can solve the problems of cumbersome and complicated process and large amount of calculation, and achieve the effect of simple operation and improved reconstruction accuracy

Active Publication Date: 2019-06-07
SHANGHAI MARITIME UNIVERSITY
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Problems solved by technology

The existing parameter calibration methods often require multiple measurement data during the calibration process, the process is cumbersome and complicated, the amount of calculation is large, and there are high requirements for the equipment required in the calibration process

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  • Rotation three-dimensional laser measurement system and plane calibration method thereof
  • Rotation three-dimensional laser measurement system and plane calibration method thereof
  • Rotation three-dimensional laser measurement system and plane calibration method thereof

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Embodiment Construction

[0031] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0032] see Figure 1-5 shown. It should be noted that the diagrams provided in this embodiment are only schematically illustrating the basic idea of ​​the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the components in actual implementation. Dimensional drawing, the type, quantity and proportion of each component can be changed arbitrar...

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Abstract

The invention provides a rotation three-dimensional laser measurement system, which comprises a data acquisition device, an acquisition auxiliary device and a data analysis and processing device. Thedata acquisition device comprises a laser range finder and a calibration reference plane. The acquisition auxiliary device comprises a pan-tilt support, a horizontally-rotating pan-tilt arranged on the pan-tilt support and a sensor support fixedly arranged on the horizontally-rotating pan-tilt. The laser range finder is mounted on the sensor support to realize two-dimensional scanning perpendicular to the pan-tilt. The data analysis and processing device is connected with the data acquisition device and the acquisition auxiliary device and is used for receiving and processing data sent by theacquisition device, and sending the data to the horizontally-rotating pan-tilt to control the horizontally-rotating pan-tilt to rotate. The invention also provides a plane calibration method based onthe rotation three-dimensional laser measurement system. The method can realize calibration of horizontal installation deviation angle and horizontal eccentric distance of the laser range finder, andcorrect the point cloud registration process, thereby improving reconstruction accuracy of a three-dimensional point cloud image.

Description

technical field [0001] The invention relates to the technical field of laser measurement, in particular to a rotating three-dimensional laser measurement system and a plane calibration method thereof. Background technique [0002] Laser range finder or lidar can obtain distance value or point cloud image in three-dimensional space, which is widely used in the fields of robot environment perception, geographic information system and reverse engineering. [0003] Scholars at home and abroad have designed a variety of laser rangefinders combined with three-dimensional rotation measurement systems with rotating devices, and have studied the parameter calibration of the measurement systems. Since the geometric center of the laser rangefinder is usually not its measurement reference point, there is an error in the reconstructed 3D point cloud image after data splicing. If the sensor installation is not accurate enough, it will further affect the final measurement accuracy. The ra...

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Application Information

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IPC IPC(8): G01S17/08G01S7/40
CPCY02T10/40
Inventor 冯肖维姜晨庄雨欣谢安安何敏
Owner SHANGHAI MARITIME UNIVERSITY
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