Browsing 23-Issue 3 by Title
Now showing items 7-26 of 47
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Coherent Hierarchical Culling: Hardware Occlusion Queries Made Useful
(The Eurographics Association and Blackwell Publishing, Inc, 2004)We present a simple but powerful algorithm for optimizing the usage of hardware occlusion queries in arbitrary complex scenes. Our method minimizes the number of issued queries and reduces the delays due to the latency of ... -
Combined Correlated and Importance Sampling in Direct Light Source Computation and Environment Mapping
(The Eurographics Association and Blackwell Publishing, Inc, 2004)This paper presents a general variance reduction method that is a quasi-optimal combination of correlated and importance sampling. The weights of the combination are selected automatically in order to keep the merits of ... -
Computing Maximal Tiles and Application to Impostor-Based Simplification
(The Eurographics Association and Blackwell Publishing, Inc, 2004)The computation of the largest planar region approximating a 3D object is an important problem with wide applications in modeling and rendering. Given a voxelization of the 3D object, we propose an efficient algorithm to ... -
Crowd of Virtual Humans: a New Approach for Real Time Navigation in Complex and Structured Environments
(The Eurographics Association and Blackwell Publishing, Inc, 2004)The navigation activity is an every day practice for any human being capable of locomotion. Our objective in this work is to reproduce this crucial human activity inside virtual environments. Putting together the high ... -
Deferred Splatting
(The Eurographics Association and Blackwell Publishing, Inc, 2004)In recent years it has been shown that, above a certain complexity, points become the most efficient rendering primitives. Although the programmability of the lastest graphics hardware allows efficient implementation of ... -
The Design of an Inexpensive Very High Resolution Scan Camera System
(The Eurographics Association and Blackwell Publishing, Inc, 2004) -
DiFi: Fast 3D Distance Field Computation Using Graphics Hardware
(The Eurographics Association and Blackwell Publishing, Inc, 2004)We present an algorithm for fast computation of discretized 3D distance fields using graphics hardware. Given a set of primitives and a distance metric, our algorithm computes the distance field for each slice of a uniform ... -
Dupin Cyclide Blends Between Quadric Surfaces for Shape Modeling
(The Eurographics Association and Blackwell Publishing, Inc, 2004)We introduce a novel method to define Dupin cyclide blends between quadric primitives. Dupin cyclides are non-spherical algebraic surfaces discovered by French mathematician Pierre-Charles Dupin at the beginning of the ... -
Dye Advection Without the Blur: A Level-Set Approach for Texture-Based Visualization of Unsteady Flow
(The Eurographics Association and Blackwell Publishing, Inc, 2004)Dye advection is an intuitive and versatile technique to visualize both steady and unsteady flow. Dye can be easily combined with noise-based dense vector field representations and is an important element in user-centric ... -
Exchanging Faces in Images
(The Eurographics Association and Blackwell Publishing, Inc, 2004)Pasting somebody's face into an existing image with traditional photo retouching and digital image processing tools has only been possible if both images show the face from the same viewpoint and with the same illumination. ... -
Fast Surface Modelling Using a 6th Order PDE
(The Eurographics Association and Blackwell Publishing, Inc, 2004)Although the control-point based parametric approach is used most widely in free-form surface modelling, complementary techniques co-exist to meet various specialised requirements. The partial differential equation (PDE) ... -
GPU-Based Nonlinear Ray Tracing
(The Eurographics Association and Blackwell Publishing, Inc, 2004)In this paper, we present a mapping of nonlinear ray tracing to the GPU which avoids any data transfer back to main memory. The rendering process consists of the following parts: ray setup according to the camera parameters, ... -
Hardware-Accelerated Rendering of Photo Hulls
(The Eurographics Association and Blackwell Publishing, Inc, 2004)This paper presents an efficient hardware-accelerated method for novel view synthesis from a set of images or videos. Our method is based on the photo hull representation, which is the maximal photo-consistent shape. We ... -
Hierarchical Retargetting of Fine Facial Motions
(The Eurographics Association and Blackwell Publishing, Inc, 2004)We present a novel technique for retargetting captured facial animation to new facial models. We use dense motion data that can express fine motions such as wrinkles. We use a normal mesh, which is a special multi-resolution ... -
High Quality Hatching
(The Eurographics Association and Blackwell Publishing, Inc, 2004)Hatching lines are often used in line illustrations to convey tone and texture of a surface. In this paper we present methods to generate hatching lines from polygonal meshes and render them in high quality either at ... -
High Resolution Acquisition, Learning and Transfer of Dynamic 3-D Facial Expressions
(The Eurographics Association and Blackwell Publishing, Inc, 2004)Synthesis and re-targeting of facial expressions is central to facial animation and often involves significant manual work in order to achieve realistic expressions, due to the difficulty of capturing high quality dynamic ... -
Image-based Relighting, and Computer Vision
(The Eurographics Association and Blackwell Publishing, Inc, 2004)Image-based techniques have become very popular over the past couple of years. Ranging from modeling to rendering and lighting, the use of images as direct input for graphics algorithms has become as important as processing ... -
Immersive Integration of Physical and Virtual Environments
(The Eurographics Association and Blackwell Publishing, Inc, 2004)We envision future work and play environments in which the user's computing interface is more closely integrated with the physical surroundings than today's conventional computer display screens and keyboards.We are working ... -
Implicit Visualization and Inverse Modeling of Growing Trees
(The Eurographics Association and Blackwell Publishing, Inc, 2004)A method is proposed for photo-realistic modeling and visualization of a growing tree. Recent visualization methods have focused on producing smoothly blending branching structures, however, these methods fail to account ... -
Instant Volumetric Understanding with Order-Independent Volume Rendering
(The Eurographics Association and Blackwell Publishing, Inc, 2004)Rapid, visual understanding of volumetric datasets is a crucial outcome of a good volume rendering application, but few current volume rendering systems deliver this result. Our goal is to reduce the volumetric surfing ...