Results 41 to 50 of about 1,320,226 (145)
Improved YOLOv8n‐seg for Instance Segmentation of the Sonar Images of Marine Debris
IET Image Processing, Volume 20, Issue 1, January/December 2026.An improved YOLOv8n‐seg for instance segmentation of the sonar images of marine debris is proposed. In the improved YOLOv8n‐seg, a new backbone is designed by proposing and introducing the C2PC‐Cone to replace the module C2f in the backbone of YOLOv8n‐seg, and a new neck is designed by replacing the module C2f of YOLOv8n‐seg with the VoV‐GSCSP, and a ...
Yongjie Jiang +3 more
wiley +1 more source
Fusion of Local Statistical Parameters for Buried Underwater Mine Detection in Sonar Imaging
EURASIP Journal on Advances in Signal Processing, 2008 Detection of buried underwater objects, and especially mines, is a current crucial strategic task. Images provided by sonar systems allowing to penetrate in the sea floor, such as the synthetic aperture sonars (SASs), are of great interest for the ...
M. Amate +4 more
doaj +1 more source
Remote Sensing, 2019 In recent decades, imaging sonar has been the most widely employed remote sensing instruments in the field of underwater detection. The multibeam echo sounder (MBES) plays an important role in obtaining high-accuracy seabed topography.
Bo Wei, Haisen Li, Tian Zhou, Siyu Xing
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Dual Frequency Side Scan Sonar Image Fusion for Deep‐Learning Based Underwater Target Detection
IET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.Traditional single‐frequency side‐scan sonar faces trade‐offs between imaging resolution and detection range, along with issues such as speckle noise and target–shadow coupling. To address these, this study proposes D2FNet, a dual‐domain fusion model integrating three key modules, which—tested on a new dataset of over 9000 paired sea‐trial images ...
Jiajun Xian +9 more
wiley +1 more source
The utility of synthetic aperture sonar in seafloor imaging [PDF]
, 2005 Synthetic Aperture Sonar (SAS) is a high-resolution acoustic imaging technique which is an extension of normal sidescan sonar imaging. The cross-range (azimuthal) resolution in real aperture sonar is dependent on distance to the illuminated scene and ...
Szczegielniak, M.
core
An Improved Backprojection Autofocus Method for Synthetic Aperture Sonar
IET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.We propose an improved backprojection (BP) autofocus method for synthetic aperture sonar (SAS), which reduces the computational overhead of existing methods using Anderson acceleration (AA) and the sparsity of high‐intensity pixels in imagery. ABSTRACT Autofocus methods effectively compensate for multi‐source phase errors in synthetic aperture radar ...
Shiping Chen +6 more
wiley +1 more source
Back Projection Algorithm for Multi-Receiver Synthetic Aperture Sonar Based on Two Interpolators
Journal of Marine Science and Engineering, 2022 The back projection (BP) algorithm is characterized by its high performance for multi-receiver synthetic aperture sonar (SAS). For this reason, it is usually used to evaluate the imaging performance of Fourier-domain methods.
Xuebo Zhang, Peixuan Yang
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Side‐Scan Sonar Image‐Based Object Detection With YOLOv8
IET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.This paper discusses a side‐scan sonar detection method based on YOLOv8. ABSTRACT The detection methods of side‐scan sonar images based on YOLOv3 and YOLOv5 suffer from issues such as insufficient feature extraction capability, high miss rate for small targets and limited localisation accuracy.
Dandan Liu +4 more
wiley +1 more source
IET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.The traditional elevation information extraction methods have issues such as limited precision of the elevation extraction and complex processing flow. Thus, an elevation information extraction scheme based on the sub‐aperture correlation using airborne CSAR imaging is proposed.
Hongtu Xie +3 more
wiley +1 more source
IEEE Access, 2022 To improve the imaging quality of conventional imaging algorithms without motion compensation (MOCO) and the efficiency of point-by-point MOCO algorithms for multiple-receiver synthetic aperture sonar (SAS) with azimuth-invariant six-degree of freedom ...
Zhen Tian +3 more
doaj +1 more source