Results 31 to 40 of about 11,277,587 (243)
A Side-Scan Sonar Image Synthesis Method Based on a Diffusion Model
Journal of Marine Science and Engineering, 2023 The limited number and under-representation of side-scan sonar samples hinders the training of high-performance underwater object detection models. To address this issue, in this paper, we propose a diffusion model-based method to augment side-scan sonar
Zhiwei Yang +4 more
doaj +1 more source
A New Denoising System for SONAR Images
EURASIP Journal on Image and Video Processing, 2009 The SONAR images are perturbed by speckle noise. The use of speckle reduction filters is necessary to optimize the image exploitation procedures. This paper presents a new denoising method in the wavelet domain, which tends to reduce the speckle, preserving the structural features and textural information of the scene. Shift-invariance associated with
Isar, Alexandru +2 more
openaire +4 more sources
A risk function for behavioral disruption of Blainville’s beaked whales (Mesoplodon densirostris) from mid-frequency active sonar [PDF]
, 2014 There is increasing concern about the potential effects of noise pollution on marine life in the world’s oceans. For marine mammals, anthropogenic sounds may cause behavioral disruption, and this can be quantified using a risk function that relates sound
Ashley Dilley +37 more
core +2 more sources
Target Detection of Forward-Looking Sonar Image Based on Improved YOLOv5
IEEE Access, 2022 Forward-looking sonar is a commonly used underwater detection device at present, but the detection accuracy is poor due to the complex underwater environment, small target highlight area and fuzzy feature details. Therefore, this paper proposes a forward
Haoting Zhang +4 more
doaj +1 more source
Multi-beam Sonar Image Sequences
, 2019 The dataset supports the following article: Diamantis K., Yaghoobi M., Davies M. and Hopgood J. 2019, 'A multi-frame resolution enhancement framework for multi-beam sonar systems' submitted for review to the IEEE Transactions of Geoscience and Remote ...
Diamantis, Konstantinos, Hopgood, James
core +2 more sources
A Method for the Interpretation of Sonar Data Recorded during Autonomous Underwater Vehicle Missions
Polish Maritime Research, 2022 Image acquisition from autonomous underwater vehicles (AUVs) is useful for mapping objects on the seabed. However, there are few studies on the interpretation of data collected with side-scan sonar during autonomous underwater vehicle missions.
Zieja Mariusz +3 more
doaj +1 more source
Synthetic aperture sonar imaging using compressive sensing and an ultrasound transducer array [PDF]
, 2013 Includes bibliographical references.Compressive sensing (CS) also known as compressive sampling is a technique used to reconstruct or recover the full-length of a signal with only a few non-adaptive measurements.
Jideani, Josiah Chimnanu
core +1 more source
Dolphin-inspired target detection for sonar and radar [PDF]
, 2014 Gas bubbles in the ocean are produced by breaking waves, rainfall, methane seeps, exsolution, and a range of biological processes including decomposition, photosynthesis, respiration and digestion.
Leighton, T.G. +3 more
core +1 more source
An Adaptive Image-stitching Algorithm for an Underwater Monitoring System
International 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