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ONLINE GEOPROCESSING USING MULTI-DIMENSIONAL GRIDDED DATA

机译:使用多维网格数据处理在线地理处理

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摘要

Traditional geoprocessing techniques often rely on the use of multiple softwares for data handling and management which consumes almost 80% of the time and requires the user to be well versed with all the intricacies of pre-processing. Therefore, there is a need to reverse the trend on analysis and data management, so as to enable scientists and researchers to focus on the science rather than data handling and pre-processing. The concept of a Data Cube which is a massive multi-dimensional array of raster or gridded data, ‘stacks’ satellite images and addresses the problems faced by traditional remote sensing practices and provides an interactive environment where datasets can be analysed with relative ease as compared to its traditional counterparts. This framework allows multi-format and multi-projection datasets spanning decades to be used in various geoprocessing techniques from simple GIS tasks such as data conversion, time series generation, and to do more complex tasks such as change detection, NDVI generation, unsupervised classification and modelling. LISS III data for the state of Uttarakhand, India was used on an interactive interface called the Jupyter Notebook where scripts written in Python allowed data to be ingested, analysed and visualised. The Data Cube framework hence proved to be a flexible and extensive development environment which can be extended to meet more complex modelling requirements.
机译:传统的空间处理技术往往依赖于使用多个软件进行数据处理和管理消耗的时间近80%,并要求与前处理的所有复杂深谙用户。因此,有必要扭转分析和数据管理的趋势,从而使对科学的科学家和研究人员的重点,而不是数据处理和预处理。即栅格或网格数据的大规模多维阵列的数据立方体的概念,“堆叠”卫星图像和地址,并面临传统遥感做法的问题提供了一种交互式环境中的数据集可以相对容易地分析相比其传统的对应。此框架允许在从简单的GIS的任务,例如数据转换,时间序列生成的各种地理处理技术被用于多格式和多投影数据集跨越几十年来,并进行更复杂的任务,如改变检测,NDVI代,无监督分类和造型。对于北阿坎德邦的状态LISS III数据,印度是一个叫Jupyter笔记本在那里写的Python脚本允许数据被摄入,分析和可视化交互界面上使用。因此,数据立方体框架被证明是一种灵活和广泛的开发环境,可扩展,以满足更复杂的造型要求。

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