Results 21 to 30 of about 88,236 (205)

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

open access: yesSensors
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   +3 more
doaj   +2 more sources

A Curvelet-Transform-Based Image Fusion Method Incorporating Side-Scan Sonar Image Features

open access: yesJournal of Marine Science and Engineering, 2023
Current methods of fusing side-scan sonar images fail to tackle the issues of shadow removal, preservation of information from adjacent strip images, and maintenance of image clarity and contrast. To address these deficiencies, a novel curvelet-transform-
Xinyang Zhao   +5 more
doaj   +3 more sources

High-Resolution Underwater Mapping Using Side-Scan Sonar. [PDF]

open access: yesPLoS ONE, 2016
The goal of this study is to generate high-resolution sea floor maps using a Side-Scan Sonar(SSS). This is achieved by explicitly taking into account the SSS operation as follows.
Antoni Burguera, Gabriel Oliver
doaj   +2 more sources

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

open access: yesJournal 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   +3 more
doaj   +2 more sources

The Impact of Side-Scan Sonar Resolution and Acoustic Shadow Phenomenon on the Quality of Sonar Imagery and Data Interpretation Capabilities

open access: yesRemote Sensing, 2023
Side-scan sonar is designed and used for a variety of survey work, in both military and civilian fields. These systems provide acoustic imageries that play a significant role in a variety of marine and inland applications.
Artur GrzÄ…dziel
doaj   +2 more sources

A New Radiometric Correction Method for Side-Scan Sonar Images in Consideration of Seabed Sediment Variation

open access: yesRemote Sensing, 2017
Affected by the residual of time varying gain, beam patterns, angular responses, and sonar altitude variations, radiometric distortion degrades the quality of side-scan sonar images and seriously affects the application of these images. However, existing
Jianhu Zhao   +3 more
doaj   +3 more sources

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

open access: yesPLoS 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   +2 more
doaj   +2 more sources

Head and Whisker Behaviours Observed During Foraging in Northern Elephant Seals (<i>Mirounga angustirostris</i>). [PDF]

open access: yesEcol Evol
We observed a range of behaviours during foraging, including forward swimming, vertical diving, swooping, dabbing, sweeping and rotations. Head dabbing was also sometimes accompanied by the seal producing infrasounds, the bouts of which coincided with rhythmic whisker protractions. ABSTRACT Pinnipeds use their whiskers to detect and follow hydrodynamic
Chapman M   +3 more
europepmc   +2 more sources

MSF-DETR: A small target detection algorithm for sonar images based on spatial-frequency domain collaborative feature fusion. [PDF]

open access: yesPLoS ONE
Side-scan sonar imaging is essential for underwater target detection in marine exploration and engineering applications, yet small target detection faces significant challenges including limited frequency domain feature utilization, insufficient multi ...
Heng Zhao   +5 more
doaj   +2 more sources

MAL-YOLO: a lightweight algorithm for target detection in side-scan sonar images based on multi-scale feature fusion and attention mechanism

open access: yesInternational Journal of Digital Earth
Side-scan sonar image target detection is of great significance in seabed resource exploration and other fields. However, affected by the complex underwater environment, side-scan sonar images have the problems of few target samples and large differences
Yu Cao   +5 more
doaj   +2 more sources

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