Volume 30 (2011): Recent submissions
Now showing items 61-80 of 236
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Extending Backward Polygon Beam Tracing to Glossy Scattering Surfaces
(The Eurographics Association and Blackwell Publishing Ltd., 2011)Backward polygon beam tracing methods, that is beam tracing from the light source (L), are well suited to gather path coherency from specular (S) scattering surfaces. These methods are useful for modelling and efficiently ... -
Diffusion‐Based Snow Cover Generation
(The Eurographics Association and Blackwell Publishing Ltd., 2011)We present a method to generate snow covers on complex scene geometries. Both volumetric snow shapes and photorealistic texturing are computed. We formulate snow accumulation as a diffusive distribution process on a ground ... -
Fast Mean‐Curvature Flow via Finite‐Elements Tracking
(The Eurographics Association and Blackwell Publishing Ltd., 2011)In this paper, we present a novel approach for efficiently evolving meshes using mean‐curvature flow. We use a finite‐elements hierarchy that supports an efficient multigrid solver for performing the semi‐implicit ... -
A Survey of Image Statistics Relevant to Computer Graphics
(The Eurographics Association and Blackwell Publishing Ltd., 2011)The statistics of natural images have attracted the attention of researchers in a variety of fields and have been used as a means to better understand the human visual system and its processes. A number of algorithms in ... -
The State of the Art in Topology‐Based Visualization of Unsteady Flow
(The Eurographics Association and Blackwell Publishing Ltd., 2011)Vector fields are a common concept for the representation of many different kinds of flow phenomena in science and engineering. Methods based on vector field topology are known for their convenience for visualizing and ... -
A Survey on Shape Correspondence
(The Eurographics Association and Blackwell Publishing Ltd., 2011)We review methods designed to compute correspondences between geometric shapes represented by triangle meshes, contours or point sets. This survey is motivated in part by recent developments in space–time registration, ... -
Improved Model‐ and View‐Dependent Pruning of Large Botanical Scenes
(The Eurographics Association and Blackwell Publishing Ltd., 2011)We present an optimized pruning algorithm that allows for considerable geometry reduction in large botanical scenes while maintaining high and coherent rendering quality. We improve upon previous techniques by applying ... -
Visual Analysis of Large Graphs: State-of-the-Art and Future Research Challenges
(The Eurographics Association and Blackwell Publishing Ltd., 2011)The analysis of large graphs plays a prominent role in various fields of research and is relevant in many important application areas. Effective visual analysis of graphs requires appropriate visual presentations in ... -
Efficient Depth‐of‐Field Rendering with Adaptive Sampling and Multiscale Reconstruction
(The Eurographics Association and Blackwell Publishing Ltd., 2011)Depth‐of‐field is one of the most crucial rendering effects for synthesizing photorealistic images. Unfortunately, this effect is also extremely costly. It can take hundreds to thousands of samples to achieve noise‐free ... -
Exploring Non‐Linear Relationship of Blendshape Facial Animation
(The Eurographics Association and Blackwell Publishing Ltd., 2011)Human face is a complex biomechanical system and non‐linearity is a remarkable feature of facial expressions. However, in blendshape animation, facial expression space is linearized by regarding linear relationship between ... -
Implicit Hierarchical Quad‐Dominant Meshes
(The Eurographics Association and Blackwell Publishing Ltd., 2011)We present a method for producing quad‐dominant subdivided meshes, which supports both adaptive refinement and adaptive coarsening. A hierarchical structure is stored implicitly in a standard half‐edge data structure, while ... -
Scale Space Meshing of Raw Data Point Sets
(The Eurographics Association and Blackwell Publishing Ltd., 2011)This paper develops a scale space strategy for orienting and meshing exactly and completely a raw point set. The scale space is based on the intrinsic heat equation, also called mean curvature motion (MCM). A simple iterative ... -
General Spectral Camera Lens Simulation
(The Eurographics Association and Blackwell Publishing Ltd., 2011)We present a camera lens simulation model capable of producing advanced photographic phenomena in a general spectral Monte Carlo image rendering system. Our approach incorporates insights from geometrical diffraction theory, ... -
Adaptive Records for Irradiance Caching
(The Eurographics Association and Blackwell Publishing Ltd., 2011)Irradiance Caching is one of the most widely used algorithms to speed up global illumination. In this paper, we propose an algorithm based on the Irradiance Caching scheme that allows us (1) to adjust the density of cached ... -
An Optimal Transport Approach to Robust Reconstruction and Simplification of 2D Shapes
(The Eurographics Association and Blackwell Publishing Ltd., 2011)We propose a robust 2D shape reconstruction and simplification algorithm which takes as input a defect-laden point set with noise and outliers. We introduce an optimal-transport driven approach where the input point set, ... -
Skeleton Computation of Orthogonal Polyhedra
(The Eurographics Association and Blackwell Publishing Ltd., 2011)Skeletons are powerful geometric abstractions that provide useful representations for a number of geometric operations. The straight skeleton has a lower combinatorial complexity compared with the medial axis. Moreover, ... -
A Multiscale Approach to Optimal Transport
(The Eurographics Association and Blackwell Publishing Ltd., 2011)In this paper, we propose an improvement of an algorithm of Aurenhammer, Hoffmann and Aronov to find a least square matching between a probability density and finite set of sites with mass constraints, in the Euclidean ... -
VASE: Volume-Aware Surface Evolution for Surface Reconstruction from Incomplete Point Clouds
(The Eurographics Association and Blackwell Publishing Ltd., 2011)Objects with many concavities are difficult to acquire using laser scanners. The highly concave areas are hard to access by a scanner due to occlusions by other components of the object. The resulting point scan typically ... -
On the Shape of a Set of Points and Lines in the Plane
(The Eurographics Association and Blackwell Publishing Ltd., 2011)Detailed geometric models of the real world are in increasing demand. LiDAR data is appropriate to reconstruct urban models. In urban scenes, the individual surfaces can be reconstructed and connected to form the scene ... -
As-Killing-As-Possible Vector Fields for Planar Deformation
(The Eurographics Association and Blackwell Publishing Ltd., 2011)Cartoon animation, image warping, and several other tasks in two-dimensional computer graphics reduce to the formulation of a reasonable model for planar deformation. A deformation is a map from a given shape to a new one, ...