NiagaraCQ: a scalable continuous query system for Internet databases
SIGMOD '00 Proceedings of the 2000 ACM SIGMOD international conference on Management of data
Efficient computation of temporal aggregates with range predicates
PODS '01 Proceedings of the twentieth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
Improving min/max aggregation over spatial objects
Proceedings of the 9th ACM international symposium on Advances in geographic information systems
Models and issues in data stream systems
Proceedings of the twenty-first ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
Efficient aggregation over objects with extent
Proceedings of the twenty-first ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
The K-D-B-tree: a search structure for large multidimensional dynamic indexes
SIGMOD '81 Proceedings of the 1981 ACM SIGMOD international conference on Management of data
Data Cube: A Relational Aggregation Operator Generalizing Group-By, Cross-Tab, and Sub-Totals
Data Mining and Knowledge Discovery
Temporal Aggregation over Data Streams Using Multiple Granularities
EDBT '02 Proceedings of the 8th International Conference on Extending Database Technology: Advances in Database Technology
Aggregate Processing of Planar Points
EDBT '02 Proceedings of the 8th International Conference on Extending Database Technology: Advances in Database Technology
Incremental Computation and Maintenance of Temporal Aggregates
Proceedings of the 17th International Conference on Data Engineering
Efficient OLAP Operations in Spatial Data Warehouses
SSTD '01 Proceedings of the 7th International Symposium on Advances in Spatial and Temporal Databases
Gigascope: a stream database for network applications
Proceedings of the 2003 ACM SIGMOD international conference on Management of data
Indexing Spatio-Temporal Data Warehouses
ICDE '02 Proceedings of the 18th International Conference on Data Engineering
Spatio-Temporal Aggregation Using Sketches
ICDE '04 Proceedings of the 20th International Conference on Data Engineering
Monitoring streams: a new class of data management applications
VLDB '02 Proceedings of the 28th international conference on Very Large Data Bases
Optimization of multiple continuous queries over streaming satellite data
GIS '06 Proceedings of the 14th annual ACM international symposium on Advances in geographic information systems
Proceedings of the 13th International Conference on Extending Database Technology
Spatio-temporal aggregates over streaming geospatial image data
EDBT'06 Proceedings of the 2006 international conference on Current Trends in Database Technology
A data and query model for streaming geospatial image data
EDBT'06 Proceedings of the 2006 international conference on Current Trends in Database Technology
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Spatial, temporal and spatio-temporal aggregates over continuous streams of remotely sensed image data build a fundamental operation in many applications in the environmental sciences. Several approaches to efficiently compute multi-dimensional aggregates have been proposed in the literature. However, none of these approaches is suitable to compute aggregate values over streaming raster image data where the spatial extents and positions of individual images vary over time. In particular, the computation of a single aggregate value becomes less meaningful when the image data contribute only partially to a query region. In this paper, we present an indexing scheme -- based on the Box-Aggregation Tree -- to efficiently compute spatio-temporal aggregates over streams of raster image data that vary in position and size. Using information about the spatial extent of incoming image data, we show how multiple aggregate values are computed for a single spatio-temporal query, thus providing more meaningful query results over spatially varying image data. Using National Oceanic and Atmospheric Administration's (NOAA) Geostationary Operational Environmental Satellite (GOES) data, we show the feasibility and efficiency of the proposed approach.