On the Advancement of BTF Measurement on Site (Unknown language)

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We present our progress to the on-site measurement of the spatially varying surface reflectance represented by bidirectional texture function (BTF). This requires a physical realization of a portable instrument that can be brought to the sample, outside the laboratory. We discuss our motivation, the main issues, and challenges for making such an instrument possible. We focus on the design of the mechanical parts that are required for an easy manipulation of the device on site and describe our experiences with the instrument in practice. The design uses a miniaturized rotary light stage. It allows for measurement of HDR images with the acquisition rate of 1000 HDR images per minute, where one HDR image consists of 4 individual exposures.

Table of contents conference proceedings

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ICL Multispectral Light Stage: Building a Versatile LED Sphere with Off-the-shelf Components
Kampouris, Christos / Ghosh, Abhijeet | 2018
On the Advancement of BTF Measurement on Site
Havran, Vlastimil / Hosek, Jan / Nemcova, Sarka / Cap, Jiri | 2018
Iso Photographic Rendering
Porral, Philippe / Lucas, Laurent / Muller, Thomas / Randrianandrasana, Joël | 2018
A Simple Diffuse Fluorescent BBRRDF Model
Jung, Alisa / Hanika, Johannes / Marschner, Steve / Dachsbacher, Carsten | 2018
Image-based Fitting of Procedural Yarn Models
Saalfeld, Alina / Reibold, Florian / Dachsbacher, Carsten | 2018
Towards Practical Rendering of Fiber-Level Cloth Appearance Models
Alejandre, Adrian / Aliaga, Carlos / Marco, Julio / Jarabo, Adrian / Muñoz, Adolfo | 2018
A Method for Fitting Measured Car Paints to a Game Engine's Rendering Model
Kneiphof, Tom / Golla, Tim / Weinmann, Michael / Klein, Reinhard | 2018
Perception of Car Shape Orientation and Anisotropy Alignment
Filip, Jiri / Kolafová, Martina | 2018
Towards Physically Based Material Appearance in the Thermal Infrared Spectrum: A Short Survey
Haraké, Laura / Burkard, Eva | 2018
Deep Dual Loss BRDF Parameter Estimation
Boss, Mark / Groh, Fabian / Herholz, Sebastian / Lensch, Hendrik P. A. | 2018
Towards a Principled Kernel Prediction for Spatially Varying BSSRDFs
Elek, Oskar / Krivánek, Jaroslav | 2018