140 search results - page 20 / 28 » Computing the visibility graph of points within a polygon |
SIGGRAPH
1994
ACM
15 years 3 months ago
1994
ACM
The irradiance at a point on a surface due to a polyhedral source of uniform brightness is given by a well-known analytic formula. In this paper we derive the corresponding analyt...
109
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CHI
2011
ACM
14 years 3 months ago
2011
ACM
Despite the tremendous popularity of social network sites both on the web and within enterprises, the relationship information they contain may be often incomplete or outdated. We...
139
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SSD
1993
Springer
15 years 3 months ago
1993
Springer
: Spatial data types or algebras for database systems should (i) be fully general (which means, closed under set operations, hence e.g. a region value can be a set of polygons with...
95
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ICIP
2003
IEEE
16 years 1 months ago
2003
IEEE
This paper describes an approach to retrieve images containing specific objects, scenes or buildings. The image content is captured by a set of local features. More precisely, we ...
ICNS
2009
IEEE
15 years 6 months ago
2009
IEEE
What is the impact of obstacles on the graphs of connections between stations in Mobile Ad hoc Networks? In order to answer, at least partially, this question, the first step is ...