INCREMENTAL NETWORK GENERATION PROVIDING SEAMLESS NETWORK OF LARGE GEOGRAPHICAL AREAS
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United States of America Patent
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Issued Date -
Feb 13, 2014
app pub date -
Dec 30, 2010
filing date -
Dec 30, 2010
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A system and method for generating a seamless road network of a large geographical area includes a plurality of GPS traces extending across a geographical area. A plurality of threads simultaneously employ entire traces to collectively generate the seamless road network. The method includes dividing the geographical area into tiles, with each trace extending across several tiles. Each thread can employ one of the traces while another thread employs another trace. Each thread employs an entire one of the traces extending across several tiles during a single step. A job scheduler and blocking table prevent threads from simultaneously processing traces having common tiles and disturbing one another. The threads employ an incremental map matching method, wherein the probe traces are compared to existing line segments of the digital map, and new line segments are created using the probe traces not matching the existing line segments.
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