Results 11 to 20 of about 60,436 (303)

Detection Algorithm of Ship Wake in SAR Images

open access: yesShanghai Jiaotong Daxue xuebao, 2020
In order to solve the problem of ship wake detection in synthetic aperture radar (SAR) image, a coherent speckle noise suppression algorithm based on analytic dictionary and a wake detection algorithm based on Radon transform are proposed.
ZHAO Ting   +4 more
doaj   +2 more sources

Study on Ship Kelvin Wake Detection in Numerically Simulated SAR Images

open access: yesRemote Sensing, 2023
To improve ship safety and increase ship concealment, we introduce a nonconvex regularization with a Cauchy-based penalty for discussing the influence of ship parameters and speckle noise in numerically simulated SAR images.
Jingjing Wang   +3 more
doaj   +2 more sources

Ship Wake Detection Based on One-Dimensional Convolutional Neural Network

open access: yes水下无人系统学报, 2023
In order to improve the detection accuracy of ship wake, this paper proposed a ship wake detection method based on a one-dimensional convolutional neural network (1DCNN).
Changsheng YANG, Wenbo GOU, Hong LIANG
doaj   +2 more sources

Adaptive CFAR Method for SAR Ship Detection Using Intensity and Texture Feature Fusion Attention Contrast Mechanism [PDF]

open access: yesSensors, 2022
Due to the complexity of sea surface environments, such as speckles and side lobes of ships, ship wake, etc., the detection of ship targets in synthetic aperture radar (SAR) images is still confronted with enormous challenges, especially for small ship ...
Nana Li   +5 more
doaj   +2 more sources

OptWake-YOLO: a lightweight and efficient ship wake detection model based on optical remote sensing images

open access: yesFrontiers in Marine Science
IntroductionShip wakes exhibit more distinctive characteristics than vessels themselves, making wake detection more feasible than direct ship detection.
Runxi Qiu, Nan Bi, Chaoyue Yin
doaj   +2 more sources

Using Conventional Cameras as Sensors for Estimating Confidence Intervals for the Speed of Vessels from Single Images [PDF]

open access: yesSensors, 2022
In this paper, we describe an image-based approach for estimating the speed of a moving vessel using the wakes that remain on the surface of water after the vessel has passed.
Jose L. Huillca, Leandro A. F. Fernandes
doaj   +2 more sources

Research on Laser Dual-Mode Fusion Detection Method of Ship Wake Bubbles

open access: yesApplied Sciences
Addressing the issues of weak echo signals and strong background interference in the laser detection of ships’ wakes, an analysis of the laser backscatter detection characteristics of ships’ wakes has been conducted.
Siguang Zong   +4 more
doaj   +2 more sources

A Systematic Review of Ship Wake Detection Methods in Satellite Imagery

open access: yesRemote Sensing
The field of maritime surveillance is one of great strategical importance from the point of view of both civil and military applications. The growing availability of spaceborne imagery makes it a great tool for ship detection, especially when paired with
Andrea Mazzeo   +2 more
doaj   +2 more sources

Discrete Edge Feature Guided Rotation Detection Method for Remote Sensing Ship Wake

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Ship wake rotation detection technology based on remote sensing images has a wide range of application value in ship supervision, trajectory prediction, and maritime rescue.
Junfei Chen   +6 more
doaj   +2 more sources

Method of Ship Wake Detection Based on Time-Frequency Analysis and Transfer Learning

open access: yes水下无人系统学报, 2022
Ship wake detection is an effective method for undersea vehicles to detect and track surface ships. However, traditional wake detection methods based on time-domain features are limited by subjective experience and complex varying marine environments ...
Gang LIU   +3 more
doaj   +1 more source

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