Results 11 to 20 of about 3,335 (199)

Water stress: Opportunities for supply chain research

Production and Operations Management, EarlyView., 2023
Abstract Driven by climate change and overuse, water stress is a worsening sustainability concern that threatens businesses and communities across the globe. Leading global organizations such as the United Nations have expressed an urgent need for sustainable water management strategies across nations and economies.
Dustin Cole, Sriram Narayanan, Elizabeth Connors, Meenu Tewari, Kyle Onda   +4 more
wiley   +1 more source

A Method for Multi-Beam Bathymetric Surveys in Unfamiliar Waters Based on the AUV Constant-Depth Mode

Journal of Marine Science and Engineering, 2023
Given the lack of systematic research on bathymetric surveys with multi-beam sonar carried by autonomous underwater vehicles (AUVs) in unfamiliar waters, this paper proposes a method for multi-beam bathymetric surveys based on the constant-depth mode of ...
Junsen Wang, Yulin Tang, Shaohua Jin, Gang Bian, Xinyang Zhao, Chengyang Peng   +5 more
doaj   +1 more source

SCALING-UP DEEP LEARNING PREDICTIONS OF HYDROGRAPHY FROM IFSAR DATA IN ALASKA [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022
The United States National Hydrography Dataset (NHD) is a database of vector features representing the surface water features for the country. The NHD was originally compiled from hydrographic content on U.S.
L. V. Stanislawski, E. J. Shavers, A. J. Duffy, P. Thiem, N. Jaroenchai, S. Wang, Z. Jiang, B. J. Kronenfeld, B. P. Buttenfield   +8 more
doaj   +1 more source

A Mosaic Method for Side-Scan Sonar Strip Images Based on Curvelet Transform and Resolution Constraints

Sensors, 2021
Due to the complex marine environment, side-scan sonar signals are unstable, resulting in random non-rigid distortion in side-scan sonar strip images. To reduce the influence of resolution difference of common areas on strip image mosaicking, we proposed
Ning Zhang, Shaohua Jin, Gang Bian, Yang Cui, Liang Chi   +4 more
doaj   +1 more source

Evaluation of Class Distribution and Class Combinations on Semantic Segmentation of 3D Point Clouds With PointNet

IEEE Access, 2023
Point clouds are generated by light imaging, detection and ranging (LIDAR) scanners or depth imaging cameras, which capture the geometry from the scanned objects with high accuracy. Unfortunately, these systems are unable to identify the semantics of the
Eike Barnefske, Harald Sternberg
doaj   +1 more source

Method for Augmenting Side-Scan Sonar Seafloor Sediment Image Dataset Based on BCEL1-CBAM-INGAN

Journal of Imaging
In this paper, a method for augmenting samples of side-scan sonar seafloor sediment images based on CBAM-BCEL1-INGAN is proposed, aiming to address the difficulties in acquiring and labeling datasets, as well as the insufficient diversity and quantity of
Haixing Xia, Yang Cui, Shaohua Jin, Gang Bian, Wei Zhang, Chengyang Peng   +5 more
doaj   +1 more source

A Point Cloud Simplification Algorithm Based on Weighted Feature Indexes for 3D Scanning Sensors

Sensors, 2022
Conventional point cloud simplification algorithms have problems including nonuniform simplification, a deficient reflection of point cloud characteristics, unreasonable weight distribution, and high computational complexity.
Zhiyuan Shi, Weiming Xu, Hao Meng
doaj   +1 more source

A Novel Method for Inverting Deep-Sea Sound-Speed Profiles Based on Hybrid Data Fusion Combined with Surface Sound Speed

Journal of Marine Science and Engineering
Sound speed profiles (SSPs) must be detected simultaneously to perform a multibeam depth survey. Accurate real-time sound speed profile (SSP) acquisition remains a critical challenge in deep-sea multibeam bathymetry due to the limitations regarding ...
Qiang Yuan, Weiming Xu, Shaohua Jin, Xiaohan Yu, Xiaodong Ma, Tong Sun   +5 more
doaj   +1 more source

S³DR-Det: A Rotating Target Detection Model for High Aspect Ratio Shipwreck Targets in Side-Scan Sonar Images

Remote Sensing
The characteristics of multi-directional rotation and high aspect ratio of targets such as shipwrecks lead to low detection accuracy and difficulty localizing existing detection models for this target type.
Quanhong Ma, Shaohua Jin, Gang Bian, Yang Cui, Guoqing Liu, Yihan Wang   +5 more
doaj   +1 more source

Technical Design and Data Analysis of Autonomous Underwater Vehicle-Based Side-Scan Sonar Operations

Journal of Marine Science and Engineering, 2023
In response to the absence of standardized work practices, work safety measures, efficient work procedures, and suitable line planning methods for exploring seabed topography using autonomous underwater vehicles (AUVs) equipped with side-scan sonar ...
Xinyang Zhao, Shaohua Jin, Gang Bian, Yang Cui, Junsen Wang, Yulin Tang, Chao Jiang   +6 more
doaj   +1 more source