Kanchana S, Jayakarthik R, Dineshbabu V, Saranya M, Srikanth Mylapalli, Rajesh Kumar T
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引用次数: 0
摘要
为了跟踪地球表面的变化,需要利用图像处理遥感技术获得大量时间序列数据。这项研究的动力来自于计算建模技术的有效性;然而,数据缺失的问题是多方面的。在进行多时分析时,如果缺少大量 a 周期时间戳的数据,问题就会越来越严重。为了简化遥感时间序列分析,本研究采用了权重优化机器学习来重建丢失的数据。考虑到因果关系的限制,该方法利用了前后时间戳的数据。该架构基于众多预测模块的集合,按时间序列顺序建立在观察到的数据上。假数据用于连接预测模块,这些模块之前是由序列的前半部分连接起来的。之后,对虚拟数据进行迭代改进,使其更适合序列的下一部分。在 Landsat-7 TM-5 卫星图像的基础上,这项工作已被证明能准确预报归一化差异植被指数时间序列中的缺失图像。在性能评估中,建议的预测模型被证明是有效的。
Weight Optimization for missing data prediction of Landslide Susceptibility Mapping in Remote sensing Analysis
To keep track of changes to the Earth's surface, extensive time series of data from remote sensing using image processing is required. This research is motivated by the effectiveness of computational modelling techniques; however, the problem of missing data is multifaceted. When data at numerous a-periodic timestamps are absent during multi-temporal analysis, the issue becomes increasingly problematic. To make remote sensing time series analysis easier, weight optimised machine learning is used in this study to rebuild lost data. Keeping the causality restriction in mind, this method makes use of data from previous and subsequent timestamps. The architecture is based on an ensemble of numerous forecasting modules, built on the observed data in the time-series order. Dummy data is used to connect the forecasting modules, which were previously linked by the earlier half of the sequence. After that, iterative improvements are made to the dummy data to make it better fit the next segment of the sequence. On the basis of Landsat-7 TM-5 satellite imagery, the work has been proven to be accurate in forecasting missing images in normalised difference vegetation index time series. In a performance evaluation, the proposed forecasting model was shown to be effective.