Browsing by Title
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Nonobtuse Remeshing and Mesh Decimation
(The Eurographics Association, 2006)Quality meshing in 2D and 3D domains is an important problem in geometric modeling and scientific computing. We are concerned with triangle meshes having only nonobtuse angles. Specifically, we propose a solution for ... -
Nonparametric Models for Uncertainty Visualization
(The Eurographics Association and Blackwell Publishing Ltd., 2013)An uncertain (scalar, vector, tensor) field is usually perceived as a discrete random field with a priori unknown probability distributions. To compute derived probabilities, e.g. for the occurrence of certain features, ... -
Nonphotorealistic Rendering by Q-mapping
(Blackwell Publishers Ltd and the Eurographics Association, 1999)We present Q-mapping which is a technique for rendering three-dimensional objects using nonphotorealistic cues, by applying Q-maps. Q-maps are three-dimensional textures that make marks on objects, and thus provide visual ... -
Nonrigid Matching of Undersampled Shapes via Medial Diffusion
(The Eurographics Association and Blackwell Publishing Ltd., 2012)We introduce medial diffusion for the matching of undersampled shapes undergoing a nonrigid deformation. We construct a diffusion process with respect to the medial axis of a shape, and use the quantity of heat diffusion ... -
Nonsmooth Newton Method for Fischer Function Reformulation of Contact Force Problems for Interactive Rigid Body Simulation
(The Eurographics Association, 2009)In interactive physical simulation, contact forces are applied to prevent rigid bodies from penetrating each other. Accurate contact force determination is a computationally hard problem. Thus, in practice one trades ... -
Nonsplitting Macro Patches for Implicit Cubic Spline Surfaces
(Blackwell Science Ltd and the Eurographics Association, 1993)Macro patches are important for generating quadric or cubic implicit spline surfaces from the input of a polyhedron. All existing macro patches split the triangular facets of the polyhedron- this paper presents cubic ... -
Non‐Isometric Shape Matching via Functional Maps on Landmark‐Adapted Bases
(© 2022 Eurographics ‐ The European Association for Computer Graphics and John Wiley & Sons Ltd., 2022)We propose a principled approach for non‐isometric landmark‐preserving non‐rigid shape matching. Our method is based on the functional map framework, but rather than promoting isometries we focus on near‐conformal maps ... -
Non‐Linear Beam Tracing on a GPU
(The Eurographics Association and Blackwell Publishing Ltd., 2011)Beam tracing combines the flexibility of ray tracing and the speed of polygon rasterization. However, beam tracing so far only handles linear transformations; thus, it is only applicable to linear effects such as planar ... -
Non‐Local Image Inpainting Using Low‐Rank Matrix Completion
(Copyright © 2015 The Eurographics Association and John Wiley & Sons Ltd., 2015).In this paper, we propose a highly accurate inpainting algorithm which reconstructs an image from a fraction of its pixels. Our algorithm is inspired by the recent progress of non‐local image processing techniques following ... -
Non‐Local Image Reconstruction for Efficient Computation of Synthetic Bidirectional Texture Functions
(The Eurographics Association and Blackwell Publishing Ltd., 2013)Visual prototyping of materials is relevant for many computer graphics applications. A large amount of modelling flexibility can be obtained by directly rendering micro‐geometry. While this is possible in principle, it is ... -
Non‐Uniform Subdivision Surfaces with Sharp Features
(© 2020 Eurographics ‐ The European Association for Computer Graphics and John Wiley & Sons Ltd, 2020)Sharp features are important characteristics in surface modelling. However, it is still a significantly difficult task to create complex sharp features for Non‐Uniform Rational B‐Splines compatible subdivision surfaces. ... -
NoRM: No-Reference Image Quality Metric for Realistic Image Synthesis
(The Eurographics Association and John Wiley and Sons Ltd., 2012)Synthetically generating images and video frames of complex 3D scenes using some photo-realistic rendering software is often prone to artifacts and requires expert knowledge to tune the parameters. The manual work required ... -
Normal and Friction Stabilization Techniques for Interactive Rigid Body Constraint-based Contact Force Computations
(The Eurographics Association, 2010)We present a novel, yet simple, method for stabilization of normal forces. A normal stabilization term, carefully designed from hypotheses about interactive usability, is added to the contact force problem. Further, we ... -
Normal Computation for Discrete Surfaces in 3D Space
(Blackwell Publishers Ltd and the Eurographics Association, 1997)Associating normal vectors to surfaces is essential for many rendering algorithms. We introduce a new method to compute normals on discrete surfaces in object space. Assuming that the surface separates space locally into ... -
Normal Enhancement for Interactive Non-photorealistic Rendering
(Eurographics Association, 2002)We present a simple technique to improve the perception of shape of an object. Bump mapping is well-known in the computer graphics community for providing the impression of small-scale geometrical features (which actually ... -
Normal Estimation for Point Clouds: A Comparison Study for a Voronoi Based Method
(The Eurographics Association, 2005)Many applications that process a point cloud data benefit from a reliable normal estimation step. Given a point cloud presumably sampled from an unknown surface, the problem is to estimate the normals of the surface at the ... -
Normal Map Bias Reduction for Many-Lights Multi-View Photometric Stereo
(The Eurographics Association, 2019)In this paper, we improve upon an existing many-lights multi-view photometric stereo approach. Firstly, we show how to detect continuous regions for normal integration, which leads to a fully automatic reconstruction ... -
Normal orientation methods for 3D offset curves, sweep surfaces and skinning
(Blackwell Science Ltd and the Eurographics Association, 1992)Computing an offset curve to a 3D curve involves the basic problem of normal orientation in space. The same thing is encountered when interpolating surfaces with 3D sweep or skinning methods. Different methods for normal ... -
A NORMAL-BUFFER VECTORIZED SURFACE SHADING MODEL
(The Eurographics Association, 1985)A surface rendering implementation is described that separates visibility operations from surface shading operations with a Normal-Buffer data structure. This allows for scene complexity independent shading operations at ... -
Normal-Driven Spherical Shape Analogies
(The Eurographics Association and John Wiley & Sons Ltd., 2021)This paper introduces a new method to stylize 3D geometry. The key observation is that the surface normal is an effective instrument to capture different geometric styles. Centered around this observation, we cast stylization ...