05-globillum theory - lumination Algorithms Illumination...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: lumination Algorithms Illumination Algorithms Digital Lighting and Rendering GT 340 CGT 340 Bedrich Benes, bbenes@purdue.edu lobal Illumination Global Illumination The goal of global illumination is to model all possible paths of light the camera to the camera Bedrich Benes, bbenes@purdue.edu he Rendering Equation The Rendering Equation mathematical concept exists that 9 A mathematical concept exists that describes the process of light ansportation transportation 9 Includes BRDF and radiance 9 A bit complicated + = L L ) , ( ) , ( x x + r e s d L f g ' ' cos cos ) ' , ( ) , ' , ( ) ' , ( ) , ( ) , ( x x x x Bedrich Benes, bbenes@purdue.edu A f r || ' || 2 x x lobal Illumination Global Illumination Area light Diffuse-Diffuse Color leeding reflections bleeding Glossy reflection Transparency and refraction Soft shadow Bedrich Benes, bbenes@purdue.edu Caustics R.C.Moreno lobal Illumination Global Illumination ery special cases are articipating media 9 Very special cases are participating media 9 Volumetric effects, fog, fire, etc. 9 Usually not captured by the global illumination 9 Correct calculation is expensive 9 Particle systems can help y p Bedrich Benes, bbenes@purdue.edu austics Caustics aused by a focused light 9 caused by a focused light on a diffuse surface sult of a specular 9 result of a specular reflection and/or ansmission transmission 9 reflective glass, bottom of a swimming pool, reflected metal Bedrich Benes, bbenes@purdue.edu austics Caustics Bedrich Benes, bbenes@purdue.edu ocal Illumination Local Illumination akes into account: Takes into account: lights, viewer, and the surface point o fast o efficient an approximation o is an approximation o suitable for a hardware implementation Bedrich Benes, bbenes@purdue.edu lobal Illumination...
View Full Document

This note was uploaded on 02/19/2012 for the course CGT 101 taught by Professor Mohler,j during the Fall '08 term at Purdue University-West Lafayette.

Page1 / 10

05-globillum theory - lumination Algorithms Illumination...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online