A Novel Calibration Method of Articulated Laser Sensor for Trans-Scale 3D Measurement

Kang, Jiehu; Wu, Bin; Duan, Xiaodeng; Xue, Tao

doi:10.3390/s19051083

Cited by 12 publications

(3 citation statements)

References 20 publications

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“…The novel sensor mainly consists of two rotary tables, one LRF and one camera. The axes of sensor represent a non-orthogonal shafting architecture [22,23]. The requirements of structural design,…”

Section: Calibration Principlementioning

confidence: 99%

Calibration method of 1D laser rangefinder for large-scale 3D measurement under harsh environment

Kang

Wang

2020

IEICE Electron. Express

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Vision measurement has encountered the bottlenecks in capturing and processing the images of laser spots under harsh working environment of strong sunshine and complex background. Breaking through the camera calibration, we propose that the corresponding relationship between pixel coordinates of laser spots, but not the camera, and measurement distances generated from laser rangefinder is directly calibrated under good working environment. The pixel coordinates of laser spots can be obtained from the calibration model and measurement distances during practical measurement. The imaging of laser spots by camera is no longer needed. Experimental results demonstrate that the measurement errors are in the millimeter level within 20 m distance outdoors.

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Section: Calibration Principlementioning

confidence: 99%

Calibration method of 1D laser rangefinder for large-scale 3D measurement under harsh environment

Kang

Wang

2020

IEICE Electron. Express

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“…A calibration method of articulated laser sensor has been proposed [23], which has been applied to this sensor successfully. To make precise measurements, it is necessary to calibrate the parameters with highly-accurate measurement instrument.…”

Section: A Calibration Of Vertical and Horizontal Axesmentioning

confidence: 99%

“…6. Three porcelain beads are adhered on the surfaces of the laser receiving plate, which is improved to simplify the computing process compared with the method in reference [23]. The centers of beads are obtained by CMM and image processing, respectively.…”

Section: B Calibration Of Measuring Axismentioning

confidence: 99%

Articulated Laser Sensor for Three-Dimensional Precision Measurement

Kang

Xue

2019

IEEE Access

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Breaking through the orthogonal shafting architecture of traditional measurement instruments, a novel articulated laser sensor for three-dimensional (3D) precision measurement is proposed. The novel sensor consists of two articulated laser sensing modules, and each module is mainly made up of two one-dimensional rotary tables and one collimated laser to achieve a flexible angle intersection. Moreover, a high-resolution digital camera is mounted on the right sensing module to achieve vision guidance. The three axes of each sensing module represent a non-orthogonal shafting architecture. The requirements of structural design, material selection, processing technology, assembling, calibration and maintain are greatly lowered. The costs are greatly reduced, including time and money. The system architecture, parameter calibration and measurement principle are elaborated. An accurate intersection model of two laser beams is proposed to calculate the accurate rotation angles of rotary tables by discrete point interpolation method. The experimental results showed that a maximum error less than 0.05 mm was detected from 100 mm to 500 mm. It is proved that 3D precision measurement is feasible with this proposed articulated laser sensor.INDEX TERMS Articulated laser sensor, non-orthogonal shafting architecture, 3D precision measurement, accurate intersection model.

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Modeling and correction of pointing error of space-borne optical imager

Huang

Tian

et al. 2021

Optik

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A Novel Calibration Method of Articulated Laser Sensor for Trans-Scale 3D Measurement

Cited by 12 publications

References 20 publications

Calibration method of 1D laser rangefinder for large-scale 3D measurement under harsh environment

Calibration method of 1D laser rangefinder for large-scale 3D measurement under harsh environment

Articulated Laser Sensor for Three-Dimensional Precision Measurement

Modeling and correction of pointing error of space-borne optical imager

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