Pitney Bowes Inc.

Samuel S Roberts

Steve T Mann

An improved method and system are provided for constructing square multi-resolution tiles for use with spatial multi-resolution raster data. This improvement permits more efficient storage, processing and display of raster tiles at different resolutions. A base level cell size is defined for a highest required resolution. Lower resolution cell sizes are defined for lower resolution tiles. The lower resolution cell sizes are integer multiples of the base level cell size. A base level tile size is defined such that the integer multiples, as used in the step of defining lower resolution cell sizes, are all integer factors of a number of cells on a side of the base level tile. Using this technique, the boundaries for the base level tile and the multi-resolution tiles are coextensive.

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Copacabana, Australia

Samuel S Roberts