Single frame profilometry with rapid phase demodulation on colour-coded fringes

Yee, Cong Kai; Yen, Kuo‐Yang

doi:10.1016/j.optcom.2017.03.064

Cited by 15 publications

(9 citation statements)

References 48 publications

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“…Then through the use of phase-shifting, Fourier transform, edge detection, or color identification analysis the phase map of a surface can be retrieved. Some of the techniques that explore the use of the De Bruijn sequence are described next [31,[44][45][46][47][48][49][50][51][52]. As it was previously described, Chen et al [31] combine a phase-shifting pattern and color fringes, using the De Bruijn sequence to improve assessment of the absolute phase.…”

Section: D Color-coded Indexed Fringesmentioning

confidence: 99%

“…Yee et al [44] propose a single-shot technique, using a color sinusoidal fringes pattern encoded with the De Bruijn sequence. According to the sequence, three consecutive fringes form a unique three character code that is not repeated throughout the pattern, Fig.…”

Section: D Color-coded Indexed Fringesmentioning

confidence: 99%

“…Color-coded fringes patterns frequently explore the use of color classification either to identify a sequence of fringes and retrieve its sequence [44][45][46], or to find the codeword associated to an element or a window of elements [60][61][62][63][64].…”

Section: F Color Identificationmentioning

confidence: 99%

See 2 more Smart Citations

Color profilometry techniques: A review

Tornero-Martínez¹,

Trujillo-Schiaffino²,

Anguiano-Morales³

et al. 2018

Opt. Pura Apl.

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Structured light is widely researched in tridimensional profilometry, due to its capability to acquire surface data from a series of images in a fast and reliable way. Hence a wide range of techniques are being used for such purpose, among which are the use of color to encode patterns. The use of colorcoding provides the ability to obtain additional data from a single image, to achieve faster 3D reconstructions with higher resolution. In this paper, a new classification of color-coded structured light patterns is proposed, and a review of the techniques is presented.

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Section: D Color-coded Indexed Fringesmentioning

confidence: 99%

Section: D Color-coded Indexed Fringesmentioning

confidence: 99%

See 1 more Smart Citation

Color profilometry techniques: A review

Tornero-Martínez¹,

Trujillo-Schiaffino²,

Anguiano-Morales³

et al. 2018

Opt. Pura Apl.

View full text Add to dashboard Cite

show abstract

“…The benefits of the method include the availability in the ambient illumination and the part with the reflective characteristic. Yee et al 19 outline a profilometry method with the color-sinusoidal-structured-light to simplify the fringe analysis. The direct arccosine function and De Bruijn sequence are adopted to demodulate the fringe images.…”

Section: Introductionmentioning

confidence: 99%

Precision analysis model and experimentation of vision reconstruction with two cameras and 3D orientation reference

Chen

et al. 2021

Sci Rep

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Active vision reconstruction is widely used in industrial manufacturing and three-dimensional inspection. The reconstruction accuracy is an important problem to be investigated for the inspection process. The paper conducts an analysis study of the reconstruction error for the vision reconstruction with a planar laser, two cameras and a 3D orientation board. The variation principles of the spatial coordinates caused by the variations of the extrinsic parameters of the cameras, intrinsic parameters of the internal camera, and image coordinate points of the internal camera, are modeled and analyzed in this paper. The analysis is also proved by the verification experiments, which provides the application potential for other active-vision-based reconstructions.

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“…Nevertheless, all the aforementioned methods require three or more extra patterns, which will limit the speed of measurement. To reduce the number of patterns, some researchers have utilized color patterns for 3D measurement [18][19][20]. However, these methods have always failed for colorful objects.…”

Section: Introductionmentioning

confidence: 99%

Absolute Phase Retrieval Using One Coded Pattern and Geometric Constraints of Fringe Projection System

et al. 2018

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Fringe projection technologies have been widely used for three-dimensional (3D) shape measurement. One of the critical issues is absolute phase recovery, especially for measuring multiple isolated objects. This paper proposes a method for absolute phase retrieval using only one coded pattern. A total of four patterns including one coded pattern and three phase-shift patterns are projected, captured, and processed. The wrapped phase, as well as average intensity and intensity modulation, are calculated from three phase-shift patterns. A code word encrypted into the coded pattern can be calculated using the average intensity and intensity modulation. Based on geometric constraints of fringe projection system, the minimum fringe order map can be created, upon which the fringe order can be calculated from the code word. Compared with the conventional method, the measurement depth range is significantly improved. Finally, the wrapped phase can be unwrapped for absolute phase map. Since only four patterns are required, the proposed method is suitable for real-time measurement. Simulations and experiments have been conducted, and their results have verified the proposed method.

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Single frame profilometry with rapid phase demodulation on colour-coded fringes

Cited by 15 publications

References 48 publications

Color profilometry techniques: A review

Color profilometry techniques: A review

Precision analysis model and experimentation of vision reconstruction with two cameras and 3D orientation reference

Absolute Phase Retrieval Using One Coded Pattern and Geometric Constraints of Fringe Projection System

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