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Refractive laser triangulation and photometric stereo in underwater environment

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Refractive laser triangulation and photometric stereo in underwater environment. / Fan, Hao; Qi, Lin; Ju, Yakun; Dong, Junyu; Yu, Hui.

In: Optical Engineering, Vol. 56, No. 11, 06.11.2017.

Research output: Contribution to journalArticle

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Fan, Hao ; Qi, Lin ; Ju, Yakun ; Dong, Junyu ; Yu, Hui. / Refractive laser triangulation and photometric stereo in underwater environment. In: Optical Engineering. 2017 ; Vol. 56, No. 11.

Bibtex

@article{318132f2cd2d465fa085f7a066297bf7,
title = "Refractive laser triangulation and photometric stereo in underwater environment",
abstract = "Laser triangulation and photometric stereo are popular optical 3D reconstruction methods but bear limitations in underwater environment because of the refraction phenomenon. Refraction bends the usually straight rays of light to another directions in the interface of a flat underwater housing. It causes the camera to capture the virtual object points instead of the real ones, so that the commonly used pinhole camera model is invalid. Therefore, in this paper, we introduce a flat refractive model for describing the geometric relation accurately between the virtual object points and the real ones, which can correct the distortions in underwater 3D reconstruction methods. The parameters of model can be estimated in a calibration step with a standard chessboard. Then the proposed geometric relation is used for rebuilding underwater three-dimensional relationship in laser triangulation and photometric stereo. The experimental results indicate the effectiveness of our methods in underwater 3D reconstruction.",
keywords = "refractive model, laser triangulation, photometric stereo",
author = "Hao Fan and Lin Qi and Yakun Ju and Junyu Dong and Hui Yu",
year = "2017",
month = nov
day = "6",
doi = "10.1117/1.OE.56.11.113101",
language = "English",
volume = "56",
journal = "Optical Engineering",
issn = "0091-3286",
publisher = "Society of Photographic Instrumentation Engineers",
number = "11",

}

RIS

TY - JOUR

T1 - Refractive laser triangulation and photometric stereo in underwater environment

AU - Fan, Hao

AU - Qi, Lin

AU - Ju, Yakun

AU - Dong, Junyu

AU - Yu, Hui

PY - 2017/11/6

Y1 - 2017/11/6

N2 - Laser triangulation and photometric stereo are popular optical 3D reconstruction methods but bear limitations in underwater environment because of the refraction phenomenon. Refraction bends the usually straight rays of light to another directions in the interface of a flat underwater housing. It causes the camera to capture the virtual object points instead of the real ones, so that the commonly used pinhole camera model is invalid. Therefore, in this paper, we introduce a flat refractive model for describing the geometric relation accurately between the virtual object points and the real ones, which can correct the distortions in underwater 3D reconstruction methods. The parameters of model can be estimated in a calibration step with a standard chessboard. Then the proposed geometric relation is used for rebuilding underwater three-dimensional relationship in laser triangulation and photometric stereo. The experimental results indicate the effectiveness of our methods in underwater 3D reconstruction.

AB - Laser triangulation and photometric stereo are popular optical 3D reconstruction methods but bear limitations in underwater environment because of the refraction phenomenon. Refraction bends the usually straight rays of light to another directions in the interface of a flat underwater housing. It causes the camera to capture the virtual object points instead of the real ones, so that the commonly used pinhole camera model is invalid. Therefore, in this paper, we introduce a flat refractive model for describing the geometric relation accurately between the virtual object points and the real ones, which can correct the distortions in underwater 3D reconstruction methods. The parameters of model can be estimated in a calibration step with a standard chessboard. Then the proposed geometric relation is used for rebuilding underwater three-dimensional relationship in laser triangulation and photometric stereo. The experimental results indicate the effectiveness of our methods in underwater 3D reconstruction.

KW - refractive model

KW - laser triangulation

KW - photometric stereo

U2 - 10.1117/1.OE.56.11.113101

DO - 10.1117/1.OE.56.11.113101

M3 - Article

VL - 56

JO - Optical Engineering

JF - Optical Engineering

SN - 0091-3286

IS - 11

ER -

ID: 7993647