Results 21 to 30 of about 1,248 (169)

DP-ViT: A Dual-Path Vision Transformer for Real-Time Sonar Target Detection

Remote Sensing, 2022
Sonar image is the main way for underwater vehicles to obtain environmental information. The task of target detection in sonar images can distinguish multi-class targets in real time and accurately locate them, providing perception information for the ...
Yushan Sun, Haotian Zheng, Guocheng Zhang, Jingfei Ren, Hao Xu, Chao Xu   +5 more
doaj   +1 more source

DSA-SOLO: Double Split Attention SOLO for Side-Scan Sonar Target Segmentation

Applied Sciences, 2022
Side-scan sonar systems play an important role in tasks such as marine terrain exploration and underwater target identification. Target segmentation of side-scan sonar images is an effective method of underwater target detection.
Honghe Huang, Zhen Zuo, Bei Sun, Peng Wu, Jiaju Zhang   +4 more
doaj   +1 more source

Seabed Detection Using Application Of Image Side Scan Sonar Instrument (Acoustic Signal)

JGEET: Journal of Geoscience, Engineering, Environment and Technology, 2017
The importance of knowing the method for seabed detection using side-scan sonar images with sonar instrument is a much-needed requirement right now. This kind of threat also requires frequent sonar surveys in such areas.
Muhammad Zainuddin Lubis, Husnul Kausarian, Wenang Anurogo   +2 more
doaj   +1 more source

Bottom Detection from Backscatter Data of Conventional Side Scan Sonars through 1D-UNet

Remote Sensing, 2021
As widely applicated in many underwater research fields, conventional side-scan sonars require the sonar height to be at the seabed for geocoding seabed images.
Jun Yan, Junxia Meng, Jianhu Zhao
doaj   +1 more source

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

Ecol 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, Frouin-Mouy H, De Leo FC, Grant RA.   +3 more
europepmc   +2 more sources

HULU SUNGAI PERAK BED SEDIMENT MAPPING USING UNDERWATER ACOUSTIC SONAR [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
Development in acoustic survey techniques in particular side scan sonar have revolutionized the way we are able to image, map and understand the riverbed environment.
N. Arriafdi, O. Zainon, U. Din, A. W. Rasid, Z. Mat Amin, R. Othman, A. S. Mardi, R. Mahmud, N. Sulaiman   +8 more
doaj   +1 more source

Marine geophysical surveys and interpretations on the ancient Eunostos harbor Area, Mediterranean Coast, Egypt

Egyptian Journal of Petroleum, 2023
A marine geophysical survey was carried out over the ruins of the ancient Eunostos harbor, in front of the recent western harbor of Alexandria. The survey works aimed to study the seafloor and the subsurface layers over the survey area using side-scan ...
Amr Z. Hamouda, Nader H. El-Gendy, Suzan El-Gharabawy, Mahmoud Salah, Moataz Kh. Barakat   +4 more
doaj   +1 more source

STUDI APLIKASI MULTIBEAM ECHOSOUNDER DAN SIDE SCAN SONAR UNTUK MENDETEKSI FREE SPAN PADA SALURAN PIPA BAWAH LAUT

Geoid, 2015
Saluran pipa bawah laut sebagai salah satu sistem distribusi dalam industri minyak dan gas harus selalu diperhatikan kondisinya agar terhindar dari risiko kerugian material maupun dampak terhadap lingkungan.
I Made Dwifa Satya Nugraha, Yuwono Yuwono   +1 more
doaj   +1 more source

Using Side-Scan Sonar instrument to Characterize and map of seabed identification target in punggur sea of the Riau Islands, Indonesia.

JGEET: Journal of Geoscience, Engineering, Environment and Technology, 2017
Punggur sea has many habitats, object, and structured of seabed with hight tide and wave. Side scan sonar is an underwater acoustic instrument for identification of seabed.
Muhammad Zainuddin Lubis, Wenang Anurogo, Hanah Khoirunnisa, Sudra Irawan, Oktavianto Gustin, Arif Roziqin   +5 more
doaj   +1 more source

A Texture Feature Removal Network for Sonar Image Classification and Detection

Remote Sensing, 2023
Deep neural network (DNN) was applied in sonar image target recognition tasks, but it is very difficult to obtain enough sonar images that contain a target; as a result, the direct use of a small amount of data to train a DNN will cause overfitting and ...
Chuanlong Li, Xiufen Ye, Jier Xi, Yunpeng Jia   +3 more
doaj   +1 more source