Fotorealistická syntéza obrazu (přednáška 10.4.2006)

Prezentace k přednášce (47 stran v češtině)

Images courtesy of Henrik Wann Jensen, James Arvo, Ivan Neulander, Cliff Lyon, Henry Yang, et al.

Local reflectance models

Metal teapot Diffuse teapot Glass teapot Glossy teapot

Metal surfaces rendered using different light models:
Gold, Phong Gold, Hall Gold, Cook-Torrance Copper, Cook-Torrance

Sample materials from Cornell BRDF database:
Automotive paint Spray paint House paint
Ceramics Human skin  


Images generated by PoV ray tracer:
Manhattan The Lovers Pearl Harbor Warm Up
Marbles Office Kitchen The Classroom

Distributed Ray-tracing

Analytically computed glossy reflection.
h = 10 h = 45 h = 400

Analytically computed glossy transmission.
h = 10 h = 65

Neulander's images:
Original (Ray-tracing) Depth of field
small disk
Depth of field
bigger disk
Motion-blur Reflection jitter  

Global illumination

Photon mapping Photon mapping
Sun is the only light source

Photon mapping Photon mapping

All images have been rendered at 1024x768 with 4 samples per pixel on a Dual P3 800MHz Linux-PC.
Ray tracing
1.5 sec
+ soft shadows
7 sec
+ caustics
12 sec (2+10)
+ global illumination
15 sec (3+12)
caustics photons 50k
global photons 200k
Path tracing reference

Cornell box

Spectral Monte-Carlo
Photon mapping + glass sphere Transcluent box
Fractal walls
1.6mil. elements
caustics: 50k photons
global: 200k photons
14min (2xPII/400)
Fractal wall & spheres
8min (2xPIII/800)
Diffuse box
4 samples/pixel
9min (Pentium/100)
Glossy box
16 samples/pixel
50min (Pentium/100)
Glossy box reference
1000 samples/pixel

JaGrLib images

Adaptive super-sampling
16x16 samples/pixel
Super-sampling graph Area light source Depth-of-field DoF + Area light
Fractal scene
Motion blur
3D noise 3D texture samples Bump textures Flare
(HDRI rendering)

[J. Pelikán's home page]  [CGG server]

Copyright: text, slides, JaGrLib images (C) 2006-2009 J.Pelikán,
Copyright: other images (C) Henrik Wann Jensen, James Arvo, Ivan Neulander, Cliff Lyon, Henry Yang et al.

Last change: $Date: 2012-05-08 17:50:24 +0200 (Tue, 08 May 2012) $
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