A novel composite-structure-light 3D measurement method for improving accuracy based on two plus one phase shifting algorithm

Zhai, Aiping; Cao, Yiping; Huang, Zhenfen; Lu, Mingteng

doi:10.1016/j.ijleo.2011.12.014

Cited by 4 publications

(6 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…x R_sub ¼ x R_ min : (13) Similarly, as shown in Fig. 7, when the original image matching point ðx R_o ; y R Þ is on the right of the best point ðx R_ min ; y R_ min Þ, it means the x R_o > x R_ min .…”

Section: Optical Engineeringmentioning

confidence: 93%

See 1 more Smart Citation

High-speed three-dimensional shape measurement using phase measurement profilometry without phase unwrapping

Yang

2018

Opt. Eng.

View full text Add to dashboard Cite

In the fast three-dimensional (3-D) shape measurement, it is an important factor to use the least number of the fringe pattern to get 3-D shape measurement of arbitrary objects. Although one-shot technologies can use one-frame deformed fringe pattern to get the wrapped phase, they are easily affected by the surface property and suffer from poor spatial resolution. In addition to the process, phase unwrapping may affect the quality of absolute phase. This paper proposes a fast measurement method based on a phase measurement profilometry and stereo vision system. This method can reconstruct 3-D surface without phase unwrapping. Using original image matching constraint, a rough parallax is used in the phase matching. To resist the false matching, subpixel parallax optimization is used to reduce the matching errors. To detect the edge point of wrapped phase, the average phase is calculated. Experimental results verify the feasibility of the proposed method and it can measure complex objects without phase unwrapping.

show abstract

Section: Optical Engineeringmentioning

confidence: 93%

“…10 Because oneshot technologies only need one frame to get the wrapped phase, they have the potential to be used in high-speed measurement. It mainly contains color coding, 11 FTP, 12 and composite pattern; 13 however, these methods still have shortcomings. Color coding is encoded with different colors.…”

Section: Introductionmentioning

confidence: 99%

High-speed three-dimensional shape measurement using phase measurement profilometry without phase unwrapping

Yang

2018

Opt. Eng.

View full text Add to dashboard Cite

show abstract

“…We compared the ICFTP method proposed in this study with other different composite methods. They are Yue et al.’s π phase shift composite method (denoted as CFTP1), 18 Wu et al.’s dual-frequency pattern composite method (denoted as CFTP2), 14 – 16 and Zhai et al.’s background light intensity and sinusoidal pattern composite method (denoted as CFTP3) 19 . The ICFTP was used to measurement the object, and the three carrier frequencies were f1p=1/10 pixels,f2p=2/10 pixels, and f3p=3/10 pixels, and the frequencies of three sinusoidal fringes wereF1p=34/500 pixels, F2p=30/500 pixels, and F3p=27/500 pixels, respectively.…”

Section: Simulation and Analysismentioning

confidence: 99%

“…17 Yue et al 18 combined two sinusoidal fringes patterns with π phase shifting and eliminated the DC component by two demodulated deformed fringe patterns to improve measurement accuracy. Zhai et al 19 combined a uniform flat image and two fringe patterns with phase shift, which effectively removed the DC component. All of the methods mentioned above use the spatial unwrapping method to calculate the phase.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional profilometry method with single-frame multifrequency composite projection fringe

Yang

Zhang

et al. 2022

Opt. Eng.

View full text Add to dashboard Cite

.An improved composite Fourier transform profilometry is proposed in this study to quickly measure the three-dimensional (3D) contour of an object. Three groups of fringe patterns with different frequencies are combined in this method. Compared with the other composite profilometry, it solves the problem of phase error propagation in phase unwrapping. The absolute phase of the object is accurately calculated and the measuring accuracy is improved greatly by filtering out the background direct current noise. Both simulation and experiment results show that the 3D contour of the measured object can be reconstructed quickly and accurately by this method. It has great application potential in the field of real-time 3D measurement.

show abstract

“…The commonly used 3D surface measuring methods based on structured light illumination [ 7 , 8 ] include Fourier transform profilometry (FTP) [ 9 , 10 ] and phase measurement profilometry (PMP) [ 11 , 12 ]. FTP requires only one frame of phase shift diagram, it is capable of retaining the fringe frequency in the frequency domain, removing high-frequency noise and carrier waves, recovering the fringe pattern from the frequency domain to the spatial domain via the inverse Fourier transform, reproducing the fringe field distribution, and lastly calculating the phase value of the fringe field [ 13 , 14 ]. PMP usually uses three or more frames of phase shift diagrams to retrieve the phase information of the measured object.…”

Section: Introductionmentioning

confidence: 99%

Real-time profilometry by bicolor grating video projection

Zhang

Cao

et al. 2021

PLoS ONE

View full text Add to dashboard Cite

A novel real-time 2+1 three-dimensional(3D) measuring method based on bicolor grating video projection is proposed. Firstly, only two frames of bicolor gratings, in which the red channels are two sinusoidal fringes with a shifting phase of π/2 and the blue channels are the same background light equivalent to the DC component of the two sinusoidal fringes are encoded and arranged alternatively to synthesize into a repetitive bicolor grating video, While this video is projected onto the measured object, the real-time bicolor deformed pattern video can be recorded by using a color CMOS camera, and the bicolor deformed pattern sequence at different moments can be extracted by computer processing, so that the 2+1 algorithm can be used to accomplish real-time 3D measurement of moving object. Before measuring, we used the same method to design two sinusoidal fringes with a difference of π in their red channels, respectively, to calibrate the sensitivity ratio between the red and blue channels of the CMOS camera, which can effectively eliminate the chromaticity imbalance between R and B channels and reduce the color crosstalk. Experimental results and analysis confirm the feasibility and effectiveness of the proposed method. Because the proposed method needs a repetitive bicolor grating video synthesized with only two-frame bicolor gratings to be projected, the 3D measurement acquisition speed and real-time accuracy will be improved compared with the traditional 2+1 3D measuring method.

show abstract

A novel composite-structure-light 3D measurement method for improving accuracy based on two plus one phase shifting algorithm

Cited by 4 publications

References 12 publications

High-speed three-dimensional shape measurement using phase measurement profilometry without phase unwrapping

High-speed three-dimensional shape measurement using phase measurement profilometry without phase unwrapping

Three-dimensional profilometry method with single-frame multifrequency composite projection fringe

Real-time profilometry by bicolor grating video projection

Contact Info

Product

Resources

About