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PDF(2744 KB)
PDF(2744 KB)
海洋涡旋智能检测研究进展
Recent developments in AI-based oceanic eddy identification
海洋涡旋是一种常见的海洋现象,在全球海洋物质和能量的输运中起着重要作用。随着海洋研究技术手段的不断提升,各类海洋涡旋检测方法应运而生。传统涡旋检测方法应用广泛,但其过度依赖于专家经验设置阈值和持续的人工干预,存在检测误差较大、工作效率低以及全球普适性差等问题,难以适应复杂多变的海洋环境。当前人工智能快速发展,其在海洋涡旋智能检测中能够自动、快速地提取图像深层特征,有效解决海洋现象特征相似度高、几何差异大的问题。该文立足于当前海洋涡旋智能检测的发展现状,从编码器-解码器结构、全卷积神经网络、多尺度上下文方法和注意力机制等方面回顾了不同深度学习方法在海洋涡旋智能检测中的应用,以期为海洋涡旋研究提供一些启示和参考。
Ocean eddies are prevalent oceanic phenomenon that play a crucial role in the global transportation of oceanic materials and energy. Although traditional methods for detecting ocean eddies are widely used, they suffer from significant drawbacks such as excessive reliance on expert-set thresholds, continuous manual intervention, large detection errors, low efficiency, and poor global applicability, making it difficult to adapt to the complex and variable marine environment. Currently, the rapid development of artificial intelligence (AI) presents a promising solution for the intelligent detection of ocean eddies. AI can automatically and rapidly extract deep features from images, effectively address the challenges posed by the high similarity in oceanic phenomenon features and significant geometric variability. This paper provides an overview of AI-based oceanic eddy identification methods based on different deep learning methods, focuses on coder-decoder structure, fully convolutional neural network, multi-scale context method and attention mechanism, and aims to provide valuable insights and references for future ocean eddy research.
海洋涡旋 / 人工智能 / 特征检测 / 深度学习 / 编码器-解码器结构 / 全卷积神经网络 / 多尺度上下文方法 / 注意力机制
oceanic eddy / artificial intelligence / feature detection / deep learning / coder-decoder structure / fully convolutional neural network / multi-scale context method / attention mechanism
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With the continuous development of space and sensor technologies during the last 40 years, ocean remote sensing has entered into the big-data era with typical five-V (volume, variety, value, velocity and veracity) characteristics. Ocean remote-sensing data archives reach several tens of petabytes and massive satellite data are acquired worldwide daily. To precisely, efficiently and intelligently mine the useful information submerged in such ocean remote-sensing data sets is a big challenge. Deep learning-a powerful technology recently emerging in the machine-learning field-has demonstrated its more significant superiority over traditional physical- or statistical-based algorithms for image-information extraction in many industrial-field applications and starts to draw interest in ocean remote-sensing applications. In this review paper, we first systematically reviewed two deep-learning frameworks that carry out ocean remote-sensing-image classifications and then presented eight typical applications in ocean internal-wave/eddy/oil-spill/coastal-inundation/sea-ice/green-algae/ship/coral-reef mapping from different types of ocean remote-sensing imagery to show how effective these deep-learning frameworks are. Researchers can also readily modify these existing frameworks for information mining of other kinds of remote-sensing imagery.© The Author(s) 2020. Published by Oxford University Press on behalf of China Science Publishing & Media Ltd.
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