Passive Reflectometry

Romeiro, Fabiano; Vasilyev, Yuriy; Zickler, Todd

doi:10.1007/978-3-540-88693-8_63

Cited by 77 publications

(86 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The achievable quality of our system is bound by fundamental limitations such as the bandwidth of the reflectance and the frequency content of the illumination [24,25]. We nevertheless achieve good quality results for the datasets presented in this paper.…”

Section: Introductionmentioning

confidence: 72%

“…They then used an inverse rendering approach to create a relightable model of the Pantheon from images with known, distant illumination. Most recently, Romeiro et al [25] introduced a passive reflectometry approach that estimates a bi-variate representation of an isotropic BRDF from a single image of a curved surface captured under known distant illumination. All of these systems require either known or controlled incident illumination and often also a detailed, captured or manually created scene model and are thus unable to reconstruct a scene's reflectance from existing imagery.…”

Section: Reflectance From Known Illuminationmentioning

confidence: 99%

“…The relighting task leads to a set of bilinear equations, which is solved iteratively yielding a reflectance estimate per surface point and an illumination estimate per input image. Provided that the illumination used for image capture and the BRDF contains sufficient high frequencies [24,25], we are able to reconstruct a detailed model of the scene, reflection properties, and illumination.…”

Section: Overview and Assumptionsmentioning

confidence: 99%

See 2 more Smart Citations

Relighting objects from image collections

Seidel

2009

2009 IEEE Conference on Computer Vision and Pattern Recognition

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 72%

Section: Reflectance From Known Illuminationmentioning

confidence: 99%

Section: Overview and Assumptionsmentioning

confidence: 99%

See 1 more Smart Citation

Relighting objects from image collections

Seidel

2009

2009 IEEE Conference on Computer Vision and Pattern Recognition

View full text Add to dashboard Cite

show abstract

“…Kurt et al [KSKK10] The multiple specular lobe model can represent layered or mixed materials. Bagher et al [BSH12] Provides accurate fitting for materials in the MERL database Löw et al [LKYU12] Guarantees accurate fitting to measured data for glossy surfaces; descibes 2 models based on the ABC distribution DATA-DRIVEN Matusik et al [MPBM03a] Provides realistic appearance and meaningful parameterisation Matusik et al [MPBM03b] Reduces number of samples to acquire and represent BRDF ISOTROPIC Romeiro et al [RVZ08] Bivariate representation, allows to capture off-specular and retro-reflections. [Arv95] or with the simpler option of a power series in (n · h) with a suitable sequence of exponents [Lew94].…”

Section: Ershov Et Al [Ekm01]mentioning

confidence: 99%

BRDF Representation and Acquisition

Guarnera

Ghosh

et al. 2016

Computer Graphics Forum

150

View full text Add to dashboard Cite

Photorealistic rendering of real world environments is important in a range of different areas; including Visual Special effects, Interior/Exterior Modelling, Architectural Modelling, Cultural Heritage, Computer Games and Automotive Design. Currently, rendering systems are able to produce photorealistic simulations of the appearance of many real‐world materials. In the real world, viewer perception of objects depends on the lighting and object/material/surface characteristics, the way a surface interacts with the light and on how the light is reflected, scattered, absorbed by the surface and the impact these characteristics have on material appearance. In order to re‐produce this, it is necessary to understand how materials interact with light. Thus the representation and acquisition of material models has become such an active research area. This survey of the state‐of‐the‐art of BRDF Representation and Acquisition presents an overview of BRDF (Bidirectional Reflectance Distribution Function) models used to represent surface/material reflection characteristics, and describes current acquisition methods for the capture and rendering of photorealistic materials.

show abstract

“…In addition, such naive representations are not straight forward to edit and interact with. Using more efficient representations such as the bivariate approximation by Romeiro et al [183] can help to reduce the data sizes. The measured data can also be approximated by using a finite truncation of some suitable analytical basis expansion, for example spherical harmonics [222].…”

Section: Data Driven Modelsmentioning

confidence: 99%

Physically Based Rendering of Synthetic Objects in Real Environments

Kronander¹

2015

View full text Add to dashboard Cite

Description of the cover imageRendering of virtual furniture illuminated with spatially varying real world illumination captured in a physical environment at IKEA Communications AB.The virtual scene was modeled by Sören and Per Larsson. Physically based rendering of synthetic objects in real environmentsCopyright © 2015 Joel Kronander (unless otherwise noted) Division of Media and Information TechnologyDepartment of Science and Technology Campus Norrköping, Printed in Sweden by LiU-Tryck, Linköping, 2015 AbstractThis thesis presents methods for photorealistic rendering of virtual objects so that they can be seamlessly composited into images of the real world. To generate predictable and consistent results, we study physically based methods, which simulate how light propagates in a mathematical model of the augmented scene. This computationally challenging problem demands both efficient and accurate simulation of the light transport in the scene, as well as detailed modeling of the geometries, illumination conditions, and material properties. In this thesis, we discuss and formulate the challenges inherent in these steps and present several methods to make the process more efficient.In particular, the material contained in this thesis addresses four closely related areas: HDR imaging, IBL, reflectance modeling, and efficient rendering. The thesis presents a new, statistically motivated algorithm for HDR reconstruction from raw camera data combining demosaicing, denoising, and HDR fusion in a single processing operation. The thesis also presents practical and robust methods for rendering with spatially and temporally varying illumination conditions captured using omnidirectional HDR video. Furthermore, two new parametric BRDF models are proposed for surfaces exhibiting wide angle gloss. Finally, the thesis also presents a physically based light transport algorithm based on Markov Chain Monte Carlo methods that allows approximations to be used in place of exact quantities, while still converging to the exact result. As illustrated in the thesis, the proposed algorithm enables efficient rendering of scenes with glossy transfer and heterogenous participating media.v Populärvetenskaplig SammanfattningEn av de största utmaningarna inom datorgrafik är att syntetisera, eller rendera, fotorealistiska bilder. Fotorealistisk rendering används idag inom många tillämpningsområden såsom specialeffekter i film, datorspel, produktvisualisering och virtuell verklighet. I många praktiska tillämpningar av fotorealistisk rendering är det viktigt att kunna placera in virtuella objekt i fotografier, så att de virtuella objekten ser verkliga ut. IKEA-katalogen, till exempel, produceras i många olika versioner för att passa olika länder och regioner. Grunden till de flesta bilderna i katalogen är oftast densamma, men symboler och standardmått på möbler varierar ofta för olika versioner av katalogen. Istället för att fotografera varje version separat kan man använda ett grundfotografi och lägga in olika virtuella objekt såsom möbler...

show abstract

Passive Reflectometry

Cited by 77 publications

References 14 publications

Relighting objects from image collections

Relighting objects from image collections

BRDF Representation and Acquisition

Physically Based Rendering of Synthetic Objects in Real Environments

Contact Info

Product

Resources

About