Underwater High-Precision 3D Reconstruction System Based on Rotating Scanning

Xue, Qingsheng; Sun, Qian; Wang, Fupeng; Bai, Haoxuan; Bai, Yang; Li, Qian

doi:10.3390/s21041402

Cited by 15 publications

(7 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In 2021, Xue and collaborators from the Ocean University of China introduced a rotating scanning-based underwater laser three-dimensional scanning system [69] . This system combines a line laser, underwater camera, and turntable to achieve vertical scanning within a 50° range and horizontal scanning in a 360° range.…”

Section: Figure 18 Prototype Photon-counting Lidar Systemmentioning

confidence: 99%

The current state of development in underwater lidar detection

Yu,

Wang

et al. 2024

Sixth Conference on Frontiers in Optical Imaging and Technology: Novel Technologies in Optical Systems

View full text Add to dashboard Cite

Oceans cover approximately 71% of the Earth’s surface and contain 97% of the planet’s total water resources. However, over 80% of the ocean remains unexplored and unmapped. Thus, the research of underwater detection technology and the development of underwater detection equipment are crucial to marine scientific research and development. Underwater Lidar detection technology has the advantages of high ranging accuracy, high spatial resolution and strong anti-interference ability compared with traditional sonar and other technologies. It is an important underwater information acquisition method and has been widely concerned by researchers. This technology is used in submarine topographic mapping, marine rights and interests maintenance, marine resources development and other fields. In this article, firstly, the detection principles of various underwater detection Lidar systems are described, including the time-of-flight detection principle based on the linear detection regime and the photon counting detection regime, and the laser line scanning detection principle, as well as the laser line scanning detection principle. Additionally, the development history of various underwater detection Lidar systems is summarized and sorted out, including Spaceborne Lidar, Airborne Lidar and Underwater Vehicle Mounted Lidar. In addition, the technical characteristics, advantages and disadvantages of the Lidar underwater detection systems under different mounted platforms are compared and analyzed. Generally speaking, Lidar underwater detection system has been fully developed and tends to be mature, and has been widely used in many fields of underwater detection, making up for the gaps in many fields of marine information detection, and gradually forming commercialized products and entering into operational observation. With the continuous progress of laser technology, detection technology, information processing technology and the development of artificial intelligence, deep learning and other high-end fields, the development of Lidar underwater detection system also tends to be intelligent, automated and miniaturized.

show abstract

Section: Figure 18 Prototype Photon-counting Lidar Systemmentioning

confidence: 99%

The current state of development in underwater lidar detection

Yu,

Wang

et al. 2024

Sixth Conference on Frontiers in Optical Imaging and Technology: Novel Technologies in Optical Systems

View full text Add to dashboard Cite

show abstract

“…. According to Equations (3), ( 4) and ( 8), the starting and the ending points and bubble vertices can be obtained, and the slope relationship between them can be calculated by Equation (9). The mask is H in length, and the mask is convoluted with all pixel points within the range of H at the bubble vertex in the order of up to down, which is equivalent to weighting and summing the part of pixel points.…”

Section: Single Bubble Defectmentioning

confidence: 99%

“…Using curvelet transform and the Canny edge detection method, studies [1][2][3] have accurately detected foreign bodies and bubbles inside the tire by studying the texture characteristics of defects. In the aspect of tire bubble detection, the line laser is rarely used, but it is still widely used in three-dimensional scanning [4][5][6][7][8][9][10][11], obtaining distance…”

Section: Introductionmentioning

confidence: 99%

Detection of Bubble Defects on Tire Surface Based on Line Laser and Machine Vision

et al. 2022

View full text Add to dashboard Cite

In order to eliminate driving dangers caused by tire surface bubbles, the detection method of bubble defects on tire surfaces based on line lasers and machine vision is studied. Since it is difficult to recognize tire surfaces directly through images, line laser scanning is used to obtain tire images. The filtering method and morphology method are combined to preprocess these images. The gray centroid method is adopted to extract the center of the laser stripe, and then the algorithm to determine the positions of bubble defects on tire surfaces is proposed. According to the geometric characteristics of tire bubbles, the coordinates of starting points, ending points, and rough positions of vertices are determined. Then, the ordinates of the laser center with sub-pixel accuracy near bubble vertices are discretely magnified. The mask made of Gaussian function is convoluted with the magnified region, and the maximum value is obtained. Furthermore, the position of bubble vertices can be accurately extracted. The denoising effects of different methods for images are compared through experiments, and different positions of bubbles are detected. Experimental results show that the detection accuracy of this method is up to 93%, which is much higher than other methods. Experiments verify that the proposed method is effective for detecting tire surface bubbles.

show abstract

“…The application of this technology facilitates improved observation of the refraction error phenomenon. Nevertheless, the analysis procedure is deficient in specificity and fails to comprehensively consider the mechanical parameters of the imaging system [ 18 ]. Furthermore, someone can expand upon the concept of stable refraction by undertaking an exhaustive examination of the two refraction processes through the utilization of three distinct media.…”

Section: Introductionmentioning

confidence: 99%

A Study on Refraction Error Compensation Method for Underwater Spinning Laser Scanning Three-Dimensional Imaging

Zhang,

Wang,

Zhang

et al. 2024

Sensors

View full text Add to dashboard Cite

Laser scanning 3D imaging technology, because it can obtain accurate three-dimensional surface data, has been widely used in the search for wrecks and rescue operations, underwater resource development, and other fields. At present, the conventional underwater spinning laser scanning imaging system maintains a relatively fixed light window. However, in low-light situations underwater, the rotation of the scanning device causes some degree of water fluctuation, which warps the light strip data that the system sensor receives about the object’s surface. To solve this problem, this research studies an underwater 3D scanning and imaging system that makes use of a fixed light window and a spinning laser (FWLS). A refraction error compensation algorithm is investigated that is based on the fundamentals of linear laser scanning imaging, and a dynamic refraction mathematical model is established based on the motion of the imaging device. The results of the experiment on error analysis in an optimal underwater environment indicate that the error in reconstructing the radius is decreased by 60% (from 2.5 mm to around 1 mm) when compensating for the measurement data of a standard sphere with a radius of 20 mm. Moreover, the compensated point cloud data exhibit a higher degree of correspondence with the model of the standard spherical point cloud. Furthermore, we examine the impact of physical noise, measurement distance, and partial occlusion of the object on the imaging system inside an authentic underwater setting. This study is a good starting point for looking at the refractive error of an underwater laser scanning imaging system. It also provides to us some ideas for future research on the refractive error of other scanning imaging methods.

show abstract

Underwater High-Precision 3D Reconstruction System Based on Rotating Scanning

Cited by 15 publications

References 47 publications

The current state of development in underwater lidar detection

The current state of development in underwater lidar detection

Detection of Bubble Defects on Tire Surface Based on Line Laser and Machine Vision

A Study on Refraction Error Compensation Method for Underwater Spinning Laser Scanning Three-Dimensional Imaging

Contact Info

Product

Resources

About