Browsing Material Appearance Modeling by Title
Now showing items 11-30 of 70
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The Effects of Digital Cameras Optics and Electronics for Material Acquisition
(The Eurographics Association, 2017)For material acquisition, we use digital cameras and process the pictures. We usually treat the cameras as perfect pinhole cameras, with each pixel providing a point sample of the incoming signal. In this paper, we study ... -
Estimating Homogeneous Data-driven BRDF Parameters from a Reflectance Map under Known Natural Lighting
(The Eurographics Association, 2019)In this paper we demonstrate robust estimation of the model parameters of a fully-linear data-driven BRDF model from a reflectance map under known natural lighting. To regularize the estimation of the model parameters, we ... -
Experimental Analysis of BSDF Models
(The Eurographics Association, 2017)The Bidirectional Scattering Distribution Function (BSDF) describes the appearance of an optically thin, translucent material by its interaction with light at a surface point. Various BSDF models have been proposed to ... -
Exploring Material Recognition for Estimating Reflectance and Illumination From a Single Image
(The Eurographics Association, 2016)In this paper, we propose a novel approach for recovering illumination and reflectance from a single image. Our approach relies on the assumption that the surface geometry has already been reconstructed and a-priori knowledge ... -
Fresnel Equations Considered Harmful
(The Eurographics Association, 2019)Microfacet shading models in film and game production have long used a simple approximation to the Fresnel equations, published by Schlick in 1994. Recently a growing number of film studios have transitioned to using the ... -
From Color to Appearance in the Real World
(The Eurographics Association, 2013)X-Rite's declared ambition is to create a digital ecosystem for appearance; a daunting challenge that has many dimensions and has not been accomplished so far. In this short paper we sketch a path from color to full ... -
Frontmatter: Eurographics 2015 Workshop on Material Appearance Modeling
(The Eurographics Association, 2015) -
Frontmatter: Eurographics 2018 Workshop on Material Appearance Modeling
(The Eurographics Association, 2018) -
Gaze Analysis of BRDF Distortions
(The Eurographics Association, 2016)BRDFs are currently used as a standard representation of material surface reflectance properties either in the from of tabulated measurements or a parametric model. However, the compression of tabulated representations as ... -
A Genetic Algorithm Based Heterogeneous Subsurface Scattering Representation
(The Eurographics Association, 2020)In this paper, we present a novel heterogeneous subsurface scattering (sss) representation, which is based on a combination of Singular Value Decomposition (SVD) and genetic optimization techniques. To find the best ... -
Geometric Accuracy Analysis of Stationary BTF Gonioreflectometers
(The Eurographics Association, 2015)The accurate BTF data representation requires specialized measurement gantries, some of them designed as gonireflectometers. These consist of an illumination source and a camera mounted on two robotic arms, one degree of ... -
Grand Challenges: Material Models in the Automotive Industry
(The Eurographics Association, 2013)Material reflectance definitions are core to high fidelity visual simulation of objects within a compelling 3D scene. In the automotive industry these are used across the entire business process: from conceptualisation of ... -
High-Quality Multi-Spectral Reflectance Acquisition with X-Rite TAC7
(The Eurographics Association, 2017)When relighting digitized objects, strong color deviations can arise depending on the illumination conditions if the object’s reflectance is only captured in RGB. To guarantee color-correct simulations, it is therefore of ... -
ICL Multispectral Light Stage: Building a Versatile LED Sphere with Off-the-shelf Components
(The Eurographics Association, 2018)We describe the design and implementation of a versatile multispectral light stage (LED sphere) consisting of 168 RGB and color temperature controllable white (W+) lamps, respectively. The light stage is powered with two ... -
Identifying Diffraction Effects in Measured Reflectances
(The Eurographics Association, 2015)There are two different physical models connecting the micro-geometry of a surface and its physical reflectance properties (BRDF). The first, Cook-Torrance, assumes geometrical optics: light is reflected and masked by the ... -
Image-based Fitting of Procedural Yarn Models
(The Eurographics Association, 2018)While common in real life, rendering fiber and cloth accurately is challenging. Recent fiber-based, procedural rendering approaches proved to be able to capture a great amount of details of real yarn. However, the current ... -
Image-based Remapping of Material Appearance
(The Eurographics Association, 2017)Digital 3D content creation requires the ability to exchange assets across multiple software applications. For many 3D asset types, standard formats and interchange conventions are available. For material definitions, ... -
Improving Spectral Upsampling with Fluorescence
(The Eurographics Association, 2020)Modern photorealistic rendering simulates spectral behaviour of light. Since many assets are still created in different RGB color spaces, spectral upsampling of the RGB colors to a spectral representation is required to ... -
In Praise of an Alternative BRDF Parametrization
(The Eurographics Association, 2015)In this paper, we extend the work of Neumann et al. [NNSK99] and Stark et al. [SAS05] to a pair of 4D BRDF parameterizations with explicit changes of variables. We detail their mathematical properties and relationships to ... -
Interactive Appearance Design in the Presence of Optically Complex
(The Eurographics Association, 2013)In this position paper, we discuss the usability of different material representations for interactive appearance design in the context of visual prototyping. We emphasize the importance of methods explicitly considering ...