Bidirectional scattering distribution function: Difference between revisions

Revision as of 15:31, 20 August 2013

Revision as of 06:50, 21 August 2013

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| doi = 10.1145/344779.344855

| accessdate = "2013-07-21"}}

</ref> was one of the last key breakthroughs on the way to fully [[virtual cinematography]] with it's ultra-photorealistic [[digital look-alike]]s. The team was the 1st one in the world to isolate the [[subsurface scattering]] component ( a specialized case of BTDF ) using the simplest [[light stage]], consisting on moveable light source, moveable high-res [[digital camera]], 2 [[polarizers]] in a few positions and really simple [[algorithm]]s on a modest [[computer]]. <ref name="Deb2000"/>. The team utilized the [[existing]] [[scientific knowledge]] that [[light]] that is reflected and scattered from the air-to-oil layer retains it's [[Polarization (waves)|polarization]] while light that travels within the [[skin]] loses it's.<ref name="Deb2000"/>. The subsurface scattering component can be [[computer simulation|simulated]] as a steady high-scatter glow of light from within the [[3D model|model]]s, without which the skin does't just look realistic. [[ESC Entertainment]], a company set up by [[Warner Brothers Pictures]] specially to do the visual effects / virtual cinematography system for the [[Matrix Reloaded]] and [[Matrix Revolutions]] isolated the parameters for an approximate analytical BRDF which consisted of [[Lambertian|lambertian]] [[diffuse|diffusion]] component and a modified [[phong reflection model|Phong]] [[specular]] component with a [[Fresnel equations|Fresnel]] type of [[Visual effects|effect]]. <ref name="HaD2004">{{cite web

| last = "Haber"

| first = "Jörg"

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| doi = 10.1145/1103900.1103906

| accessdate = "2013-08-19"}}</ref>

==Overview of the BxDF functions==