Results 41 to 50 of about 1,866,820 (291)

Bayesian three-dimensional reconstruction of toothed whale trajectories: Passive acoustics assisted with visual and tagging measurements [PDF]

open access: yes, 2012
The author describes and evaluates a Bayesian method to reconstruct three-dimensional toothed whale trajectories from a series of echolocation signals.
Laplanche, Christophe
core   +4 more sources

Adaptive polarimetric image representation for contrast optimization of a polarized beacon through fog [PDF]

open access: yes, 2015
We present a contrast-maximizing optimal linear representation of polarimetric images obtained from a snapshot polarimetric camera for enhanced vision of a polarized light source in obscured weather conditions (fog, haze, cloud) over long distances ...
Alouini, Mehdi   +2 more
core   +3 more sources

Development and testing of a dual accelerometer vector sensor for AUV acoustic surveys [PDF]

open access: yes, 2017
This paper presents the design, manufacturing and testing of a Dual Accelerometer Vector Sensor (DAVS). The device was built within the activities of theWiMUST project, supported under the Horizon 2020 Framework Programme, which aims to improve the ...
Agni Mantouka   +10 more
core   +1 more source

A Benchmark dataset for both underwater image enhancement and underwater object detection

open access: yes, 2020
Underwater image enhancement is such an important vision task due to its significance in marine engineering and aquatic robot. It is usually work as a pre-processing step to improve the performance of high level vision tasks such as underwater object detection.
Chen, Long   +7 more
openaire   +2 more sources

Underwater Fish Detection with Weak Multi-Domain Supervision

open access: yes, 2019
Given a sufficiently large training dataset, it is relatively easy to train a modern convolution neural network (CNN) as a required image classifier. However, for the task of fish classification and/or fish detection, if a CNN was trained to detect or ...
Bradley, Michael   +5 more
core   +1 more source

Understanding the Influence of Image Enhancement on Underwater Object Detection: A Quantitative and Qualitative Study

open access: yesRemote Sensing
Underwater image enhancement is often perceived as a disadvantageous process to object detection. We propose a novel analysis of the interactions between enhancement and detection, elaborating on the potential of enhancement to improve detection.
Ashraf Saleem   +5 more
doaj   +1 more source

An Underwater SLAM System using Sonar, Visual, Inertial, and Depth Sensor

open access: yes, 2019
This paper presents a novel tightly-coupled keyframe-based Simultaneous Localization and Mapping (SLAM) system with loop-closing and relocalization capabilities targeted for the underwater domain.
Li, Alberto Quattrini   +2 more
core   +1 more source

Underwater Multi-Robot Convoying using Visual Tracking by Detection

open access: yes, 2017
We present a robust multi-robot convoying approach that relies on visual detection of the leading agent, thus enabling target following in unstructured 3-D environments.
Chang, Wei-Di   +9 more
core   +1 more source

Delving into Underwater Image Utility: Benchmark Dataset and Prediction Model

open access: yesRemote Sensing
High-quality underwater images are essential for both human visual perception and machine analysis in marine vision applications. Although significant progress has been achieved in Underwater Image Quality Assessment (UIQA), almost all existing UIQA ...
Jiapeng Liu, Yi Liu, Qiuping Jiang
doaj   +1 more source

Detection and Pose Estimation for Short-Range Vision-Based Underwater Docking

open access: yesIEEE Access, 2019
The potential of using autonomous underwater vehicles (AUVs) for underwater exploration is confined by its limited on-board battery energy and data storage capacity.
Shuang Liu   +5 more
doaj   +1 more source

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