Results 261 to 270 of about 637,784 (341)

Uncertainty Driven Active Learning for Image Segmentation in Underwater Inspection

International Conference on Robotics, Computer Vision and Intelligent Systems
Active learning aims to select the minimum amount of data to train a model that performs similarly to a model trained with the entire dataset. We study the potential of active learning for image segmentation in underwater infrastructure inspection tasks,
Luiza Ribeiro Marnet, Yury Brodskiy, Stella Grasshof, Andrzej Wasowski   +3 more
semanticscholar   +1 more source

Development of a Hybrid Underwater Vehicle for Visual Inspection of Bridge Piers

IEEE International Underwater Technology Symposium, 2023
Bridge piers on a big bay need periodical inspection to maintain structural health for safety, but it is difficult to inspect underwater part frequently due to the turbidity of bay water and strong current of tides.
H. Kondo, Shukichi Kobayashi, Takatsugu Tashiro, Noriaki Saigo, T. Hiraike, Kai Kuroki   +5 more
semanticscholar   +1 more source

Underwater Inspections: Credibility And Technology

Offshore Technology Conference, 1981
Abstract Both the demand for underwater inspections and the number of suppliers of these services have grown dramatically in response to such domestic legislation as the Outer Continental Shelf Lands Act Amendment and the OCS Orders based on this act.
John Mittleman, David B. Wyman
openaire   +1 more source

RGB-D Camera-based Navigation for Autonomous Underwater Inspection using Low-cost Micro AUVs

IEEE/OES Autonomous Underwater Vehicles, 2020
Commercial RGB-D cameras enable even small scale mobile robots with sophisticated and cost-efficient 3D-scanning capabilities. We transfer this sensory concept to the domain of underwater structure inspections.
Daniel A. Duecker, Tim Hansen, E. Kreuzer   +2 more
semanticscholar   +1 more source

Underwater Inspection Risks

Journal of the Construction Division, 1981
A systematic approach for dealing with underwater inspection risks is examined. It consists of developing an underwater inspection program during the design stage and including the program in the p...
openaire   +1 more source

Underwater Inspection Of Naval Structures

Proceedings OCEANS '83, 1983
Nondestructive testing (NDT) performed underwater is one of the major maintenance methods to assure the efficient operation of naval structures such as piers, navigational aids, etc. Methods used for NDT of naval structures include general methods such as visual testing, ultrasonics and radiography.
H. Berger, R. Brackett, J. Mittleman
openaire   +1 more source

A Flexible Alternating Current Field Measurement Magnetic Sensor Array for In Situ Inspection of Cracks in Underwater Structure

IEEE Transactions on Instrumentation and Measurement
Alternating current field measurement (ACFM) technique has been widely used in defect inspection of underwater metal structures. However, due to the high cost of inspection, it is difficult to carry out nondestructive testing (NDT) regularly to obtain ...
Xin’an Yuan, Han Wang, Wei Li, X. Yin, Xihe Zhang, Jianxi Ding, Jianchao Zhao, Qinyu Chen, Jun-wei Wu, Xiao Li, Dong Hu, Yu Gao   +11 more
semanticscholar   +1 more source

An on-line weld inspection method for underwater offshore structure based on an improved deep convolutional network

Nondestructive Testing and Evaluation
The acoustic signal analysing is a crucial evaluation method for welding repair of in-service marine structures. However, the complex underwater environment complicates the quality evaluations.
Ran Chen, Pan Hu, Xu Gui, Liang Hua
semanticscholar   +1 more source

Subsea pipeline leak inspection by autonomous underwater vehicle

, 2021
Faced with the difficulty in finding and locating leakage points of submarine pipelines timely as well as the high cost of pipeline routine inspection, a scheme using autonomous underwater vehicle (AUV) equipped with multibeam echo sounder (MBES) and ...
Hongwei Zhang, Shitong Zhang, Yanhui Wang, Yuhong Liu, Yang Yanan, Tian Zhou, Hongyu Bian   +6 more
semanticscholar   +1 more source

Underwater inspection robot—AIRIS 21®

Nuclear Engineering and Design, 1999
Abstract Highly reliable, cost-effective and extended examination coverage are three big demands for newly developed ISI equipment. AIRIS 21 (Advanced Inspection System for Reactor Pressure Vessel and Internals) which is a state-of-the-art next generation device, has been developed to reply to these demands.
openaire   +1 more source