Sciweavers

140 search results - page 12 / 28
» Fast multiresolution image querying
Sort
View
SIGMOD
1999
ACM
181views Database» more  SIGMOD 1999»
14 years 2 months ago
Approximate Computation of Multidimensional Aggregates of Sparse Data Using Wavelets
Computing multidimensional aggregates in high dimensions is a performance bottleneck for many OLAP applications. Obtaining the exact answer to an aggregation query can be prohibit...
Jeffrey Scott Vitter, Min Wang
ISBI
2008
IEEE
14 years 10 months ago
On approximation of orientation distributions by means of spherical ridgelets
Visualization and analysis of the micro-architecture of brain parenchyma by means of magnetic resonance imaging is nowadays believed to be one of the most powerful tools used for ...
Oleg V. Michailovich, Yogesh Rathi
ICIP
1999
IEEE
14 years 2 months ago
Compensation of Unidirectional Geometric Distortion in EPI Using Spline Warping
Due to magnetic field inhomogeneities, EPI images are geometrically distorted, predominantly along the phase-encoding direction. Currently, the distortion is either ignored or com...
Jan Kybic, Philippe Thévenaz, Michael Unser
ICDE
2007
IEEE
200views Database» more  ICDE 2007»
14 years 11 months ago
AttentionAttractor: efficient video stream similarity query processing in real time
In a current project, customers are attracted by a video streaming application. A video camera records people passing by, and a monitor shows an alienated version of the setting a...
Ira Assent, Ralph Krieger, Thomas Seidl
DCC
2008
IEEE
14 years 9 months ago
On Self-Indexing Images - Image Compression with Added Value
Recent advances in compressed data structures have led to the new concept of self-indexing; it is possible to represent a sequence of symbols compressed in a form that enables fas...
Veli Mäkinen, Gonzalo Navarro