大规模地理空间光栅的高效直方图支持基于web的查询

Proceedings of the ACM SIGSPATIAL Second International Workshop on High Performance and Distributed Geographic Information Systems Pub Date : 2011-11-01 DOI:10.1145/2070770.2070779

Simin You, Jianting Zhang

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引用次数: 0

摘要

这篇演示论文报告了我们设计和实现的一个基于web的系统，该系统支持大规模地理空间光栅的有效直方图，该系统使用由用户在客户端交互式绘制的矩形或任意形状的多边形。通过结合两种性能提升技术，即物化直方图和压缩图，使用50个随机兴趣区域(roi)的实验表明，我们的方法比直接扫描与roi相交的所有栅格图快几倍。

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Efficient histogramming of large-scale geospatial rasters in supporting of web-based queries

This demonstration paper reports our design and implementation of a Web-based system that supports efficient histogramming of large-scale geospatial rasters using either rectangular or arbitrarily shaped polygons interactively drawn by users at the client side. By combining two performance boosting techniques, namely materialized histograms and compressed tiles, experiments using 50 random Region of Interests (ROIs) show that our approach is several times faster than straightforwardly scanning all raster tiles that intersect with the ROIs.

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Proceedings of the ACM SIGSPATIAL Second International Workshop on High Performance and Distributed Geographic Information Systems

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