Probe-based multi-view field 3D vision measurement system based on three-dimensional orientation target

In structured light 3D vision measurement system, calibration tasks are key steps. Aiming at a special application of line structured light measurement, namely computer hard-disk surface planeness measurement at a precision equipment manufacturing company in Singapore, and combining with the structured light measurement model, determined three calibration tasks of the system. The three calibrating tasks concluded: calibrating the camera parameters; calibrating the light plane pose and calibrating the movement pose. At the same time, according to the three calibration results, measured the computer hard disk, and reconstructed the 3D model of the computer hard disk. The experimental results show that, the whole system of three calibration process is simple and reliable, the method does not need any auxiliary adjustment and realize the measurement accuracy about 0.023 mm. The work laid the better foundation for hard disk planeness vision measurement.

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Embedded 3D vision measurement system based on the line structured light

Proceeding of the 11th World Congress on Intelligent Control and Automation ◽

10.1109/wcica.2014.7053750 ◽

2014 ◽

Cited By ~ 1

Author(s):

Zhao Wang ◽

Xuewei Cao ◽

Haitao Song ◽

Han Xiao ◽

Wenhao He ◽

...

Keyword(s):

Measurement System ◽

Structured Light ◽

3D Vision ◽

Vision Measurement

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3D Wide FOV Scanning Measurement System Based on Multiline Structured-Light Sensors

Advances in Mechanical Engineering ◽

10.1155/2014/758679 ◽

2014 ◽

Vol 6 ◽

pp. 758679 ◽

Cited By ~ 2

Author(s):

He Gao ◽

Fuqiang Zhou ◽

Bin Peng ◽

Yexin Wang ◽

Haishu Tan

Keyword(s):

Measurement System ◽

High Efficiency ◽

Structured Light ◽

Ccd Camera ◽

Measurement Range ◽

Object Surface ◽

3D Vision ◽

Vision Measurement ◽

Measurement Area ◽

Wide Fov

Structured-light three-dimensional (3D) vision measurement is currently one of the most common approaches to obtain 3D surface data. However, the existing structured-light scanning measurement systems are primarily constructed on the basis of single sensor, which inevitably generates three obvious problems: limited measurement range, blind measurement area, and low scanning efficiency. To solve these problems, we developed a novel 3D wide FOV scanning measurement system which adopted two multiline structured-light sensors. Each sensor is composed of a digital CCD camera and three line-structured-light projectors. During the measurement process, the measured object is scanned by the two sensors from two different angles at a certain speed. Consequently, the measurement range is expanded and the blind measurement area is reduced. More importantly, since six light stripes are simultaneously projected on the object surface, the scanning efficiency is greatly improved. The Multiline Structured-light Sensors Scanning Measurement System (MSSS) is calibrated on site by a 2D pattern. The experimental results show that the RMS errors of the system for calibration and measurement are less than 0.092 mm and 0.168 mm, respectively, which proves that the MSSS is applicable for obtaining 3D object surface with high efficiency and accuracy.

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Light probe based large FOV 3D vision measurement system

Optics and Precision Engineering ◽

10.3788/ope.20132109.2217 ◽

2013 ◽

Vol 21 (9) ◽

pp. 2217-2224 ◽

Cited By ~ 1

Author(s):

冯萍 FENG Ping ◽

魏振忠 WEI Zhen-zhong

Keyword(s):

Measurement System ◽

3D Vision ◽

Vision Measurement ◽

Light Probe

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3D vision measurement system based on linear structured light

Design, Manufacturing and Mechatronics ◽

10.1142/9789814730518_0140 ◽

2015 ◽

Author(s):

Sheng-Jie Lin ◽

Xue-Rong Yang ◽

Si-Yuan Cheng

Keyword(s):

Measurement System ◽

Structured Light ◽

3D Vision ◽

Vision Measurement

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A Portable 3D Vision Coordinate Measurement System Using a Light Pen

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.295-296.331 ◽

2005 ◽

Vol 295-296 ◽

pp. 331-336 ◽

Cited By ~ 9

Author(s):

S.G. Liu ◽

K. Peng ◽

F.S. Huang ◽

Guo Xiong Zhang ◽

P. Li

Keyword(s):

Measurement System ◽

Ccd Camera ◽

Measuring System ◽

Light Sources ◽

Object Surface ◽

Laptop Computer ◽

3D Vision ◽

Measuring Device ◽

Vision Measurement ◽

Light Pen

A portable three-dimensional vision coordinate measuring system is proposed in this paper. It consists of a light pen, a CCD camera and a laptop computer. The light pen is a hand-held probe with three point light sources using LEDs and a spherical touch stylus arranged in one line. The CCD camera takes the image of LEDs on the light pen and the 3D coordinates of measured point at the center of touch stylus are obtained by computing the positions of LEDs in the image when the probe contacts the object surface. The equations of the vision measurement system are derived by using perspective of three collinear points and spatial analytic geometry. The measuring device can be set up easily on an industrial site and the measurement is convenient. The object surface can be simple, complex, or hidden from the view of camera. The effectiveness of the mathematical model and validity of the measuring system are confirmed by experiments.

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