Results 31 to 40 of about 3,529 (200)
A review on the wavelet methods for sonar image segmentation
International Journal of Advanced Robotic Systems, 2020 The sonar image segmentation is needed such as in underwater object orientation and recognition, in collision prevention and navigation of underwater robots, in underwater investigation and rescue, in seafloor object seeking, in seafloor salvage, and in ...
Yuanyuan Tian, Luyu Lan, Haitao Guo
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An Adaptive Image-stitching Algorithm for an Underwater Monitoring System
International Journal of Advanced Robotic Systems, 2014 Against the narrow range of sonar images for underwater monitoring, an adaptive sonar image-stitching algorithm is proposed in this paper. Compared with conventional sonar image-stitching algorithms, this algorithm can be applied to stitch sonar images ...
Li Hengyu +4 more
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A Side-Scan Sonar Image Synthesis Method Based on a Diffusion Model
Journal of Marine Science and Engineering, 2023 The limited number and under-representation of side-scan sonar samples hinders the training of high-performance underwater object detection models. To address this issue, in this paper, we propose a diffusion model-based method to augment side-scan sonar
Zhiwei Yang +4 more
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Target Detection of Forward-Looking Sonar Image Based on Improved YOLOv5
IEEE Access, 2022 Forward-looking sonar is a commonly used underwater detection device at present, but the detection accuracy is poor due to the complex underwater environment, small target highlight area and fuzzy feature details. Therefore, this paper proposes a forward
Haoting Zhang +4 more
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Journal of Marine Science and EngineeringThere are many challenges in using side-scan sonar (SSS) images to detect objects. The challenge of object detection and recognition in sonar data is greater than in optical images due to the sparsity of detectable targets.
Jier Xi, Xiufen Ye
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Archaeological Prospection, EarlyView.ABSTRACT Medieval and early modern drowned villages in the intertidal zone of the Scheldt estuary (the Netherlands) constitute intriguing yet largely understudied components of north‐western Europe's underwater cultural heritage. Despite their high archaeological potential as time capsules of past settlement landscapes, research has remained limited ...
Jan Trachet +9 more
wiley +1 more source
On the Information Advantage of Sidescan Sonar Three-Frequency Colour over Greyscale Imagery
Journal of Marine Science and Engineering, 2019 A prototype three-frequency (114, 256, and 410 kHz) colour sidescan sonar system, built by Kongsberg Underwater Mapping Ltd. (Great Yarmouth, UK), was previously described, and preliminary results presented, in Tamsett, McIlvenny, and Watts.
Duncan Tamsett +4 more
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Scanning Parametric Sediment Echosounder as Tool for Underwater Archaeological Prospection
Archaeological Prospection, EarlyView.ABSTRACT Underwater cultural heritage 3D prospection techniques, especially for remains that are partly buried in the ground, are only very rarely available and often can only be applied with considerable technical effort. To overcome this limitation, we evaluate a methodological adaption of widely used and available single channel parametric sediment ...
Dennis Wilken +5 more
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Sonar Image Detection Based on Multi-Scale Multi-Column Convolution Neural Networks
IEEE Access, 2019 Automatic detection of underwater objects by sonar images is an important and challenging topic in applications of Autonomous Underwater Vehicle (AUV) under the complex marine environment.
Zhen Wang, Shanwen Zhang
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Artificial Reef Detection Method for Multibeam Sonar Imagery Based on Convolutional Neural Networks
Remote Sensing, 2022 Artificial reef detection in multibeam sonar images is an important measure for the monitoring and assessment of biological resources in marine ranching.
Zhipeng Dong +5 more
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