Appearance of interfaced lambertian microfacets, using STD distribution
Pages 1 - 4
Abstract
This paper presents the use of Student's T-Distribution (STD) with interfaced Lambertian (IL) microfacets. The resulting model increases the range of materials while providing a very accurate adjustment of appearance. STD has been recently proposed as a generalized distribution of microfacets which includes Beckmann and GGX widely used in computer graphics; IL corresponds to a physical representation of a Lambertian substrate covered with a flat Fresnel interface. We illustrate the appearance variations that can be observed, and discuss the advantages of using such a combination.
References
[1]
{APS00} Ashikhmin M., Premoze S., Shirley P.: A microfacet-based BRDF generator. In ACM SIGGRAPH (august 2000), pp. 65--74. 1
[2]
{BBS02} Bourlier C., Berginc G., Saillard J.: One and two-dimensional shadowing functions for any height and slope stationary un-correlated surface in the monostatic and bistatic configurations. IEEE Transactions on Antennas and Propagation 50, 3 (march 2002), 312--324. 2
[3]
{BS63} Beckmann P., Spizzichino A.: The Scattering of Electromagnetic Waves from Rough Surfaces. Pergamon Press, 1963. 1, 2
[4]
{BSH12} Bagher M., Soler C., Holzschuch N.: Accurate fitting of measured reflectances using a Shifted Gamma micro-facet distribution. Computer Graphics Forum 31, 4 (june 2012), 1509-1518. 1, 2
[5]
{Bur12} Burley B.: Physically-based shading at disney. In ACM SIGGRAPH Courses (2012). 2, 3
[6]
{CT82} Cook R. L., Torrance K. E.: A reflectance model for computer graphics. ACM Transactions on Graphics 1, 1 (January 1982), 7--24. 1, 2
[7]
{Hei14} Heitz E.: Understanding the masking-shadowing function in microfacet-based brdfs. Journal of Computer Graphics Techniques (JCGT) 3, 2 (june 2014), 32--91. 1, 2
[8]
{HHdD15} Heitz E., Hanika J., d'Eon E., Dachsbacher C.: Multiple-Scattering Microfacet BSDFs with the Smith Model. Tech. rep., INRIA, november 2015. 3
[9]
{Hof16} Hoffman N.: Recent advances in physically based shading. In ACM SIGGRAPH Courses (2016). 1
[10]
{KSK01} Kelemen C., Szirmay-Kalos L.: A microfacet based coupled specular-matte BRDF model with importance sampling. In Eurographics (short presentations) (september 2001), p. 4. 2
[11]
{MBT*17} Meneveaux D., Bringier B., Tauzia E., Ribardière M., Simonot L.: Rendering rough opaque materials with interfaced lambertian microfacets. IEEE Transactions on Visualization and Computer Graphics (2017). 1, 2, 3
[12]
{ON94} Oren M., Nayar S. K.: Generalization of Lambert's reflectance model. In ACM SIGGRAPH (july 1994), pp. 239--246. 1, 2
[13]
{RBMS17} Ribardière M., Bringier B., Meneveaux D., Simonot L.: Std: Student's t-distribution of slopes for microfacet based bsdfs. In Eurographics (2017). 1, 3
[14]
{TR75} Trowbridge T. S., Reitz K. P.: Average irregularity representation of a rough surface for ray reflection. Journal of Opt. Soc. Am. 65, 5 (may 1975), 531--536. 2
[15]
{TS67} Torrance K. E., Sparrow E. M.: Theory for off-specular reflection from roughened surfaces. Journal of Opt. Soc. Am. 57, 9 (1967), 1105--1114. 1, 2
[16]
{WMLT07} Walter B., Marschner S. R., Li H., Torrance K. E.: Microfacet models for refraction through rough surfaces. In Eurographics Symposium on Rendering (june 2007), pp. 195--206. 1, 2, 3
- Appearance of interfaced lambertian microfacets, using STD distribution
Recommendations
Rendering intricately-shaped objects using view-dependent microfacets
When a real object is displayed in a virtual space by using computer graphics, the general approach is to draw the image on the basis of the geometrical information and the texture information about the object. However, when the object has a complex and ...
Simulating non-lambertian phenomena involving linearly-varying luminaires
EGWR'01: Proceedings of the 12th Eurographics conference on RenderingWe present a new technique for exactly computing glossy reflections and transmissions of polygonal Lambertian luminaires with linearly-varying radiant exitance. To derive the underlying closed-form expressions, we introduce a rational generalization of ...
Simulating painted appearance of BTF materials
Bidirectional texture function (BTF) provides a realistic representation for real-world materials; however, the representation does not allow users to append additional rendering effects to the BTF data in a simple and effective way. In this paper, we ...
Comments
Information & Contributors
Information
Published In
Publisher
Eurographics Association
Goslar, Germany
Publication History
Published: 18 June 2017
Qualifiers
- Research-article
Contributors
Other Metrics
Bibliometrics & Citations
Bibliometrics
Article Metrics
- 0Total Citations
- 0Total Downloads
- Downloads (Last 12 months)0
- Downloads (Last 6 weeks)0
Reflects downloads up to 10 Nov 2024
Other Metrics
Citations
View Options
View options
Get Access
Login options
Check if you have access through your login credentials or your institution to get full access on this article.
Sign in