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Article
Chemistry, Multidisciplinary
Chaoxin Chen et al.
Summary: To quickly and conveniently measure the crack information of concrete planar structures, a non-contact measurement method based on binocular vision is proposed. The method involves an improved DeeplabV3+ semantic segmentation model, construction of the plane space coordinate equation, and calculation of crack width. Experimental results demonstrate the high precision and stable accuracy of the proposed method in different measurement angles. It effectively solves the problem of measuring crack width in outdoor environments.
APPLIED SCIENCES-BASEL
(2023)
Article
Automation & Control Systems
Liang Wei et al.
Summary: In this paper, a circle location method based on the invariance of collinear points and pole-polar constraint is proposed to address the eccentric error of circular marks in camera calibration. The extraction of ellipse centers and the establishment of the true concentric circle center projection equation are achieved by exploiting the cross ratio invariance of the collinear points. The proposed method performs better in locating and calibrating circular marks by achieving the actual center projection of the marks.
JOURNAL OF SYSTEMS ENGINEERING AND ELECTRONICS
(2023)
Article
Optics
Haidong Zhang et al.
Summary: Vision measurement is crucial in construction scenarios, and the accuracy of binocular camera calibration directly affects its precision. This study presents a flexible binocular camera calibration method using state transformation to address the challenge of conveniently calibrating a large-range binocular vision system in harsh construction environments. The proposed method achieves mapping between pixel coordinates and world coordinates and divides the calibration process into two stages. Simulation and experiments show that the method has low reprojection error and relative measurement error, demonstrating good robustness for complex engineering sites.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Optics
Zhuoyi Yin et al.
Summary: This paper proposes a new method for camera calibration, which collects two consecutive frames and corrects the calibration data, reducing the re-projection error, improving calibration accuracy, and reducing dependence on the number of images.
Article
Optics
Yulong Yin et al.
Summary: This paper proposes a high-precision and robust binocular camera calibration method based on a coding target. The method improves the stability and robustness of calibration results by designing a coding target with simple patterns and using a rapid, robust, and accurate decoding algorithm. Additionally, the introduction of zenith and azimuth angles enhances the robustness of the calibration. Furthermore, a multi-constraint optimization method is proposed to refine the parameters of the binocular camera and improve the accuracy of calibration. Experimental results confirm the effectiveness of the proposed method.
Article
Computer Science, Information Systems
Xinhua Liu et al.
Summary: This paper proposes a multi-camera stereo calibration method based on circular calibration plate, focusing on the extraction of pattern features during the calibration process. Experimental results show that this method has better calibration effect and accuracy compared to traditional calibration methods, with an average reduction of over 0.006 pixels in the multi-camera reprojection error.
Article
Engineering, Marine
Meiyan Zhang et al.
Summary: This paper discusses a binocular-vision-based underwater obstacle avoidance mechanism and verifies it with a self-made Underwater Quadrocopter Vehicle. The proposed UQV has the ability to move freely underwater and offers advantages over existing AUVs. The binocular vision method accurately locates underwater obstacles, and the UQV can effectively avoid multiple obstacles.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Review
Engineering, Mechanical
Y. N. Hao et al.
Summary: This paper reviews the key technologies used for 3D modeling of warehouse systems and discusses the methods for reconstructing 3D views of warehouses in warehouse management systems.
JOURNAL OF MECHANICAL ENGINEERING AND SCIENCES
(2022)
Article
Chemistry, Analytical
Lijun Zhong et al.
Summary: In this paper, a new method called PtD is proposed for 3D line reconstruction, which achieves higher accuracy in both the direction and the position of the 3D line compared to DtP.
Article
Computer Science, Artificial Intelligence
Ben Zhang et al.
Summary: The paper proposes an improved stereo camera calibration method that increases calibration accuracy by optimizing captured corners. The method is multi-staged, utilizing a Harris corner detector, linear optimization, and nonlinear optimization for intrinsic and extrinsic parameter calibration of the binocular vision setup. The technique is validated through analysis of factors influencing calibration accuracy and experimental conditions, demonstrating a more appealing mean error compared to existing literature.
INTERNATIONAL JOURNAL OF PATTERN RECOGNITION AND ARTIFICIAL INTELLIGENCE
(2021)
Article
Chemistry, Analytical
Hesheng Yin et al.
Article
Optics
Sixin Liang et al.
Article
Chemistry, Analytical
Jon Muhovic et al.
Article
Computer Science, Artificial Intelligence
Guoliang Hu et al.
IET IMAGE PROCESSING
(2020)
Article
Chemistry, Analytical
Xiaojun Yu et al.
Article
Optics
Zhilong Su et al.
OPTICS AND LASERS IN ENGINEERING
(2019)
Article
Chemistry, Analytical
Yue Wang et al.
Article
Engineering, Electrical & Electronic
Pathum Rathnayaka et al.
JOURNAL OF SENSORS
(2017)
Article
Computer Science, Artificial Intelligence
ZY Zhang
IEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE
(2000)
