16843 search results - page 3068 / 3369 » On Generalized Authorization Problems |
158
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ICPR
2006
IEEE
16 years 7 months ago
2006
IEEE
In cast-shadow analysis one merely draws a line between each occluder and its associated shadow cast onto a different surface, possibly with wedges indicating precision. In some c...
272
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GIS
2007
ACM
16 years 7 months ago
2007
ACM
We consider the problem of extracting a river network and a watershed hierarchy from a terrain given as a set of irregularly spaced points. We describe TerraStream, a "pipeli...
269
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GIS
2007
ACM
16 years 7 months ago
2007
ACM
Accurate and efficient integration of geospatial data is an important problem with applications in areas such as emergency response and urban planning. Some of the key challenges ...
266
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GIS
2008
ACM
16 years 7 months ago
2008
ACM
Information and specifically Web pages may be organized, indexed, searched, and navigated using various metadata aspects, such as keywords, categories (themes), and also space. Wh...
276
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GIS
2005
ACM
16 years 7 months ago
2005
ACM
Numerous raster maps are available on the Internet, but the geographic coordinates of the maps are often unknown. In order to determine the precise location of a raster map, we ex...