Results 61 to 70 of about 163,397 (237)

An Adaptive Image-stitching Algorithm for an Underwater Monitoring System

open access: yesInternational Journal of Advanced Robotic Systems, 2014
Against the narrow range of sonar images for underwater monitoring, an adaptive sonar image-stitching algorithm is proposed in this paper. Compared with conventional sonar image-stitching algorithms, this algorithm can be applied to stitch sonar images ...
Li Hengyu   +4 more
doaj   +1 more source

ARTMAP-FTR: A Neural Network for Object Recognition Through Sonar on a Mobile Robot [PDF]

open access: yes, 1998
ART (Adaptive Resonance Theory) neural networks for fast, stable learning and prediction have been applied in a variety of areas. Applications include automatic mapping from satellite remote sensing data, machine tool monitoring, medical prediction ...
Carpenter, Gail A.   +2 more
core   +1 more source

Comparison of Conventional, Rake, and Sonar‐Based Biophysical Habitat Measurements in a Shallow Ontario River

open access: yesRiver Research and Applications, EarlyView.
ABSTRACT Knowledge of habitat availability is critically important for the management and recovery of freshwater species. Quantifying habitat availability often requires fine‐scale sampling at point‐based locations across a large geographic extent, which can be laboursome.
Karl A. Lamothe   +2 more
wiley   +1 more source

Research and analysis on military strength demand of dipping sonar on-call submarine searching based on submarine evasion [PDF]

open access: yesZhihui kongzhi yu fangzhen
Based on the actual process of dipping sonar in on-call submarine searching, combined with the classic extended spiral search method, a multi machine dipping sonar on-call submarine searching model was established.
ZHANG Feifei, ZHAO Shendong, LI Ruihong, LIU Pengfei
doaj   +1 more source

Mini-sonar---A Miniaturized Sector Scanning Sonar [PDF]

open access: yesOCEANS '80, 1980
Use of small submersibles has increased in recent years. A vehicle that is simply a swimming TV camera can be made quite small, but its utility is limited because of its limited view of its surroundings. The mini-sonar program was started at NOSC to develop a small sector scanning sonar for use on small vehicles without affecting their bulk.
openaire   +1 more source

Incorporating environmental DNA metabarcoding for improved benthic biodiversity and habitat mapping

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
Seafloor imagery is commonly used to collect information about the distribution of benthic organisms in order to generate habitat and biodiversity maps. Recent advances in genomics (e.g., environmental DNA; eDNA) show potential to complement video surveys for habitat mapping, but there have been few examples testing this.
Rylan J. Command   +8 more
wiley   +1 more source

Sonar behaviour in non-terrestrial ocean exploration [PDF]

open access: yes, 2001
A goal for a future Europan payload is to determine the extent of the postulated sea, aspects of acoustic remote sensing are discussed with a view to operating a sonar in such an subsurface ...
Garry, J. R. C., Towner, M. C.
core  

From snapshots to continuous estimates: Augmenting citizen science with computer vision for fish monitoring

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
This study presents an end‐to‐end computer‐vision pipeline for monitoring fish migration using underwater video. We integrate field camera deployment, annotation, model training and automated in‐season counting to generate continuous, high‐resolution data on river herring spawning migration.
Zhongqi Chen   +7 more
wiley   +1 more source

Underwater Sonar Image Classification with Image Disentanglement Reconstruction and Zero-Shot Learning

open access: yesRemote Sensing
Sonar is a valuable tool for ocean exploration since it can obtain a wealth of data. With the development of intelligent technology, deep learning has brought new vitality to underwater sonar image classification.
Ye Peng   +5 more
doaj   +1 more source

Evaluation and Verification of Bottom Acoustic Reverberation Statistics Predicted by the Point Scattering Model [PDF]

open access: yes, 1992
The point scatteringmodel offers a parameterization of the reverberation probability density function (pdf) in terms of the coefficient of excess (kurtosis) and a coherent component represented by a harmonic process with random phase.
Alexandrou, Dimitri   +2 more
core   +2 more sources

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