ASUNAM
2009
IEEE
13 years 2 months ago
2009
IEEE
With hundreds of millions of users already today, virtual worlds will become an important factor in tomorrow's media landscape. In a virtual world, users are represented by s...
UIST
1991
ACM
13 years 8 months ago
1991
ACM
The Polhemus Isotrak is often used as an orientation and position tracking device in virtual reality environments. When it is used to dynamically determine the user's viewpoi...
ICDE
2005
IEEE
13 years 10 months ago
2005
IEEE
Recently, highly accurate positioning devices enable us to provide various types of location-based services. On the other hand, because position data obtained by such devices incl...
ACCV
2006
Springer
13 years 10 months ago
2006
Springer
Abstract. This paper describes a novel method for estimating extrinsic camera parameters using both feature points on an image sequence and sparse position data acquired by GPS. Ou...
LOCA
2007
Springer
13 years 10 months ago
2007
Springer
Many context- and location-aware applications request high accuracy and availability of positioning systems. In reality however, knowledge about the current position may be incompl...
SIGIR
2009
ACM
13 years 11 months ago
2009
ACM
Large search engines process thousands of queries per second on billions of pages, making query processing a major factor in their operating costs. This has led to a lot of resear...
ICDE
2007
IEEE
14 years 5 months ago
2007
IEEE
For location-based services it is often essential to efficiently process proximity relations among mobile objects, such as to establish whether a group of friends or family member...