Results 41 to 50 of about 434 (130)

Visualizing And Processing Side-Scan Sonar Images: a Case of the Lower Reaches of the Enisei River

Российская Арктика, 2020
In this paper, the authors discuss some issues of collecting and processing side-scan sonar (SSS) images collected during a survey of the lower reaches of the Enisei River.
Babiy I. A., Galimzyanov O. A., Goncharov A. E.   +2 more
doaj   +1 more source

Neural Network-Based Underwater Object Detection off the Coast of the Korean Peninsula

Journal of Marine Science and Engineering, 2022
Recently, neural network-based deep learning techniques have been actively applied to detect underwater objects in sonar (sound navigation and ranging) images.
Won-Ki Kim, Ho Seuk Bae, Su-Uk Son, Joung-Soo Park   +3 more
doaj   +1 more source

Examining the Impact of Derelict Pots on Blue Crab (Callinectes sapidus) Catch and Harvest Within a Recreational Fishery

Fisheries Management and Ecology, EarlyView.
ABSTRACT Derelict fishing gear can negatively affect marine ecosystems through mortality in coastal environments. This study explored the impact of derelict and active crab pots on recreational blue crab (Callinectes sapidus) catch rates and landings in a Mid‐Atlantic estuary by deploying experimental pots in four habitat strata within three sections ...
Randy J. Feris Serrano, Jennifer E. Repp, Kaylin M. Regan, Arthur C. Trembanis, Matthew J. Oliver, Edward A. Hale   +5 more
wiley   +1 more source

SODA: Structure-Guided Diffusion and Auto-Labeling for Synthetic Side-Scan Sonar Data Generation

IEEE Access
Robust interpretation of side-scan sonar imagery benefits from object information together with surrounding structural cues, but constructing large-scale annotated datasets remains challenging due to the high cost of expert labeling.
Hyerin Hwang, Seung-Uk Im, Jung-Hee Oh
doaj   +1 more source

Alluvial substrate mapping by automated texture segmentation of recreational-grade side scan sonar imagery. [PDF]

PLoS ONE, 2018
Side scan sonar in low-cost 'fishfinder' systems has become popular in aquatic ecology and sedimentology for imaging submerged riverbed sediment at coverages and resolutions sufficient to relate bed texture to grain-size.
Daniel Hamill, Daniel Buscombe, Joseph M Wheaton   +2 more
doaj   +1 more source

Side-Scan Sonar Applications for Evaluating Coastal Structures [PDF]

, 1988
Applications of side-scan sonar for inspecting coastal structures were evaluated. Results were based on 6 years of structure inspections, including structures on the Atlantic, Pacific, Gulf, and Great Lakes coasts of the United States. Most of the structures inspected were jetties and breakwaters; however, applications for vertical wall structures and ...
Clausner, James E., Pope, Joan
openaire   +2 more sources

Lake sturgeon (Acipenser fulvescens) growth and longevity estimated from adult capture–mark–recapture data

Journal of Fish Biology, EarlyView.
Abstract Effective fishery management policy depends on accurate life‐history data, particularly for harvested species. Longevity is a core life‐history trait that is directly related to annual survival and lifetime reproductive potential, but fish longevity is generally not well documented, particularly for long‐lived species.
Edward A. Baker, Scott F. Colborne, Nancy A. Auer, Kim T. Scribner, Douglas L. Larson, Andrew S. Briggs, Ronald M. Bruch, Margaret H. Stadig, Michael C. Donofrio   +8 more
wiley   +1 more source

DS-SIAUG: A Self-Training Approach Using a Disrupted Student Model for Enhanced Side-Scan Sonar Image Augmentation

Sensors
Side-scan sonar is a principal technique for subsea target detection, where the quantity of sonar images of seabed targets significantly influences the accuracy of intelligent target recognition.
Chengyang Peng, Shaohua Jin, Gang Bian, Yang Cui   +3 more
doaj   +1 more source

Early results and lessons learned from biomanipulation and chemical restoration of a eutrophic shallow lake

Restoration Ecology, EarlyView.
Abstract Introduction Over 44% of European lakes fail to meet ecological quality standards, prompting substantial investment in lake restoration to achieve good ecological status. Unfortunately, effects are often short‐lived due to persistent internal phosphorus (P) loading and strong cyprinid‐driven bottom‐up control, which limits water quality ...
Emma Polauke, Kaj Sand‐Jensen, Christian Skov, Theis Kragh   +3 more
wiley   +1 more source

A Mapping Method Fusing Forward-Looking Sonar and Side-Scan Sonar

Journal of Marine Science and Engineering
In modern ocean exploration, forward-looking sonar (FLS) provides real-time 2D imaging of the seabed ahead, but its detection range is relatively limited.
Hong Liu, Xiufen Ye, Hanwen Zhou, Hanjie Huang   +3 more
doaj   +1 more source