High-speed 3D surface measurement with a fringe projection based optical sensor

2014 ◽  
Author(s):  
Christian Bräuer-Burchardt ◽  
Stefan Heist ◽  
Peter Kühmstedt ◽  
Gunther Notni
Keyword(s):  
Optical Sensor ◽  
High Speed ◽  
Fringe Projection ◽  
Surface Measurement ◽  
3D Surface

A New Three-Dimensional Profilometer for Surface Profile Measurement Using Digital Fringe Projection and Phase Shifting

2005 ◽  
Vol 295-296 ◽  
pp. 471-476
Author(s):  
Liang Chia Chen ◽  
S.H. Tsai ◽  
Kuang Chao Fan
Keyword(s):  
High Speed ◽  
Structured Light ◽  
Three Dimensional ◽  
Surface Profile ◽  
Phase Shifting ◽  
Fringe Projection ◽  
Surface Measurement ◽  
Profile Measurement ◽  
Digital Fringe Projection ◽  
Fringe Patterns

The development of a three-dimensional surface profilometer using digital fringe projection technology and phase-shifting principle is presented. Accurate and high-speed three-dimensional profile measurement plays a key role in determining the success of process automation and productivity. By integrating a digital micromirror device (DMD) with the developed system, exclusive advantages in projecting flexible and accurate structured-light patterns onto the object surface to be measured can be obtained. Furthermore, the developed system consists of a specially designed micro-projecting optical unit for generating flexibly optimal structured-light to accommodate requirements in terms of measurement range and resolution. Its wide angle image detection design also improves measurement resolution for detecting deformed fringe patterns. This resolves the problem in capturing effective deformed fringe patterns for phase shifting, especially when a coaxial optical layout of a stereomicroscope is employed. Experimental results verified that the maximum error was within a reasonable range of the measured depth. The developed system and the method can provide a useful and effective tool for 3D full field surface measurement ranging from µm up to cm scale.

scholarly journals High-speed and high-accuracy 3D surface measurement using a mechanical projector

2018 ◽  
Vol 26 (2) ◽  
pp. 1474 ◽  
Author(s):  
Jae-Sang Hyun ◽  
George T.-C. Chiu ◽  
Song Zhang
Keyword(s):  
High Speed ◽  
High Accuracy ◽  
Surface Measurement ◽  
3D Surface

Height Measurement Based on Fringe Projection

2014 ◽  
Vol 487 ◽  
pp. 298-301
Author(s):  
Vithyacharan Retnasamy ◽  
Zaliman Sauli ◽  
Nor Shakirina Nadzri ◽  
Christopher John Veriven
Keyword(s):  
High Speed ◽  
Measurement Accuracy ◽  
Three Dimensional ◽  
Phase Shifting ◽  
Fringe Projection ◽  
Surface Measurement ◽  
Height Measurement ◽  
Cost Measurement ◽  
The Cost ◽  
Factor Technique

A three-dimensional surface measurement using fringe projection technique has received attention among the researches for the last few decades.However choosing the best method is the challenge because one needs to consider the cost, measurement speed, system complexity, measurement accuracy and data reliability to ensure the success of the measurement. This paper focused on the successful manipulation of non-collimated light source and three step phase shifting for height measurement of a lead frame.The measurement done based on pixel determination from the saw tooth image. In addition, the scaling factor technique has been employed for the measurement accuracy. The experimental results achieved a high precision of measurement with simple system and high speed capability.

scholarly journals Underwater 3D Surface Measurement Using Fringe Projection Based Scanning Devices

Sensors ◽  
2015 ◽  
Vol 16 (1) ◽  
pp. 13 ◽  
Author(s):  
Christian Bräuer-Burchardt ◽  
Matthias Heinze ◽  
Ingo Schmidt ◽  
Peter Kühmstedt ◽  
Gunther Notni
Keyword(s):  
Fringe Projection ◽  
Surface Measurement ◽  
3D Surface

scholarly journals Fast 3D Surface Measurement with Wrapped Phase and Pseudorandom Image

Sensors ◽  
2019 ◽  
Vol 19 (19) ◽  
pp. 4185 ◽  
Author(s):  
Liu ◽  
He ◽  
Hu ◽  
Liu
Keyword(s):  
High Speed ◽  
Image Acquisition ◽  
Three Dimensional ◽  
Experimental System ◽  
Surface Measurement ◽  
Image Method ◽  
Epipolar Constraint ◽  
Pattern Projection ◽  
3D Surface ◽  
Measurement Results

Balancing the accuracy and speed of three-dimensional (3D) surface measurement of objects is crucial in many important applications. In this paper, we present a wrapped phase and pseudorandom image method and develop an experimental system aiming to avoid the process of phase unwrapping. Our approach can reduce the length of image sequences and improve the speed of pattern projection and image acquisition and can be used as a good candidate for high-speed 3D measurement. The most critical step in our new methodology is using the wrapped phase and the epipolar constraint between one camera and a projector, which can obtain several candidate 3D points within the measurement volume (MV). The false points from the obtained candidate 3D points can be eliminated by the pseudorandom images. A systematic accuracy with MV better than 0.01 mm is achievable. 3D human body measurement results are given to confirm the fast speed of image acquisition capability.

High-speed three-dimensional measurements with a fringe projection-based optical sensor

2014 ◽  
Vol 53 (11) ◽  
pp. 112213 ◽  
Author(s):  
Christian Bräuer-Burchardt ◽  
Andreas Breitbarth ◽  
Peter Kühmstedt ◽  
Gunther Notni
Keyword(s):  
Optical Sensor ◽  
High Speed ◽  
Three Dimensional ◽  
Fringe Projection ◽  
Dimensional Measurements

scholarly journals Snapshot phase shift fringe projection 3D surface measurement

2015 ◽  
Vol 23 (2) ◽  
pp. 667 ◽  
Author(s):  
Zhenyue Chen ◽  
Xia Wang ◽  
Rongguang Liang
Keyword(s):  
Phase Shift ◽  
Fringe Projection ◽  
Surface Measurement ◽  
3D Surface
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