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ICPR
2008
IEEE
15 years 11 months ago
Learning motion patterns in crowded scenes using motion flow field
Learning typical motion patterns or activities from videos of crowded scenes is an important visual surveillance problem. To detect typical motion patterns in crowded scenarios, w...
Min Hu, Mubarak Shah, Saad Ali
VIS
2008
IEEE
192views Visualization» more  VIS 2008»
15 years 11 months ago
Smooth Surface Extraction from Unstructured Point-based Volume Data Using PDEs
Abstract--Smooth surface extraction using partial differential equations (PDEs) is a well-known and widely used technique for visualizing volume data. Existing approaches operate o...
Paul Rosenthal, Lars Linsen
CHI
2002
ACM
15 years 10 months ago
Interactive 3D flow visualization using a streamrunner
Flow visualization in 3D is challenging due to perceptual problems such as occlusion, lack of directional cues, lack of depth cues, and visual complexity. In this paper we present...
Robert S. lramee
ALENEX
2003
139views Algorithms» more  ALENEX 2003»
14 years 11 months ago
Interpolation over Light Fields with Applications in Computer Graphics
We present a data structure, called a ray interpolant tree, or RI-tree, which stores a discrete set of directed lines in 3-space, each represented as a point in 4-space. Each dire...
F. Betul Atalay, David M. Mount
SIGGRAPH
1996
ACM
15 years 1 months ago
Technologies for Augmented Reality Systems: Realizing Ultrasound-Guided Needle Biopsies
We present a real-time stereoscopic video-see-through augmented reality (AR) system applied to the medical procedure known as ultrasound-guided needle biopsy of the breast. The AR...
Andrei State, Mark A. Livingston, William F. Garre...