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Automatic Impervious Surface Area Detection Using Image Texture Analysis and Neural Computing Models with Advanced Optimizers

机译:使用图像纹理分析和具有高级优化器的神经计算模型进行自动不透水表面积检测

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摘要

Up-to-date information regarding impervious surface is valuable for urban planning and management. The objective of this study is to develop neural computing models used for automatic impervious surface area detection at a regional scale. To achieve this task, advanced optimizers of adaptive moment estimation (Adam), a variation of Adam called Adamax, Nesterov-accelerated adaptive moment estimation (Nadam), Adam with decoupled weight decay (AdamW), and a new exponential moving average variant (AMSGrad) are used to train the artificial neural network models employed for impervious surface detection. These advanced optimizers are benchmarked with the conventional gradient descent with momentum (GDM). Remotely sensed images collected from Sentinel-2 satellite for the study area of Da Nang city (Vietnam) are used to construct and verify the proposed approach. Moreover, texture descriptors including statistical measurements of color channels and binary gradient contour are employed to extract useful features for the neural computing model-based pattern recognition. Experimental result supported by statistical test points out that the Nadam optimizer-based neural computing model has achieved the most desired predictive accuracy for the data collected in the studied region with classification accuracy rate of 97.331, precision = 0.961, recall = 0.984, negative predictive value = 0.985, and Fl score = 0.972. Therefore, the model developed in this study can be a helpful tool for decision-makers in the task of urban land-use planning and management.
机译:有关不透水表面的最新信息对于城市规划和管理很有价值。本研究的目的是开发用于区域尺度自动不透水表面积检测的神经计算模型。为了完成这项任务,使用自适应矩估计 (Adam)、Adam 的变体(称为 Adamax)、Nesterov 加速自适应矩估计 (Nadam)、具有解耦权重衰减的 Adam (AdamW) 和新的指数移动平均变量 (AMSGrad) 的高级优化器来训练用于不透水表面检测的人工神经网络模型。这些高级优化器以传统的梯度动量下降 (GDM) 为基准。利用Sentinel-2卫星采集的越南岘港市研究区遥感影像,构建并验证了所提方法。此外,采用纹理描述符(包括颜色通道的统计测量和二元渐变轮廓)来提取有用的特征,用于基于神经计算模型的模式识别。统计检验支持的实验结果表明,基于Nadam优化器的神经计算模型对研究区域采集的数据达到了最理想的预测精度,分类准确率为97.331%,精度=0.961,召回率=0.984,阴性预测值=0.985,Fl评分=0.972。因此,本研究建立的模型可以为决策者在城市土地利用规划和管理任务中提供有用的工具。

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