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TOG
2008
102views more  TOG 2008»
13 years 4 months ago
A meshless hierarchical representation for light transport
We introduce a meshless hierarchical representation for solving light transport problems. Precomputed radiance transfer (PRT) and finite elements require a discrete representation...
Jaakko Lehtinen, Matthias Zwicker, Emmanuel Turqui...
MVA
1998
190views Computer Vision» more  MVA 1998»
13 years 5 months ago
A Hierarchical Method of Recognizing Plant Species by Leaf Shapes
In order to recognize plant species from their shapes, shapes of contours of leaves can be used. However, contours of leaves are complicated and have variations. In order to deal ...
Cholhong Im, Hirobumi Nishida, Tosiyasu L. Kunii
AISC
2006
Springer
13 years 8 months ago
Hierarchical Representations with Signatures for Large Expression Management
Abstract. We describe a method for managing large expressions in symbolic computations which combines a hierarchical representation with signature calculations. As a case study, th...
Wenqin Zhou, Jacques Carette, David J. Jeffrey, Mi...
HLK
2003
IEEE
13 years 9 months ago
Interactive 3D Building Modeling Using a Hierarchical Representation
Modeling and visualization of city scenes is important for many applications including entertainment and urban mission planning. Models covering wide areas can be efficiently cons...
Sung Chun Lee, Ramakant Nevatia
3DPVT
2006
IEEE
167views Visualization» more  3DPVT 2006»
13 years 10 months ago
Hierarchical Representation of Virtual Cities for Progressive Transmission over Networks
Interactive network-based navigation over large urban environments raises difficult problems due to the size and complexity of these scenes. In this paper, we present a clientser...
Jérôme Royan, R. Balter, Christian Bo...
EUROGRAPHICS
2010
Eurographics
14 years 1 months ago
Real-time Realistic Ocean Lighting using Seamless Transitions from Geometry to BRDF
Realistic animation and rendering of the ocean is an important aspect for simulators, movies and video games. By nature, the ocean is a difficult problem for Computer Graphics: i...
Eric Bruneton, Fabrice Neyret, Nicolas Holzschuch
SIGMOD
2008
ACM
136views Database» more  SIGMOD 2008»
14 years 4 months ago
Mining relationships among interval-based events for classification
Existing temporal pattern mining assumes that events do not have any duration. However, events in many real world applications have durations, and the relationships among these ev...
Dhaval Patel, Wynne Hsu, Mong-Li Lee
ICCV
2005
IEEE
14 years 6 months ago
Probabilistic Contour Extraction Using Hierarchical Shape Representation
In this paper, we address the issue of extracting contour of the object with a specific shape. A hierarchical graphical model is proposed to represent shape variations. A complex ...
Xin Fan, Chun Qi, Dequn Liang, Hua Huang
CVPR
2007
IEEE
14 years 6 months ago
Hierarchical Learning of Curves Application to Guidewire Localization in Fluoroscopy
In this paper we present a method for learning a curve model for detection and segmentation by closely integrating a hierarchical curve representation using generative and discrim...
Adrian Barbu, Vassilis Athitsos, Bogdan Georgescu,...