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Samuli Helin.  Valon ominaisuudet luonnossa  Valaisumalleja tietokonegrafiikassa  Raytracing eli säteenseuranta  Global illumination  Renderöinti.

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Presentation on theme: "Samuli Helin.  Valon ominaisuudet luonnossa  Valaisumalleja tietokonegrafiikassa  Raytracing eli säteenseuranta  Global illumination  Renderöinti."— Presentation transcript:

1 Samuli Helin

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5  Valon ominaisuudet luonnossa  Valaisumalleja tietokonegrafiikassa  Raytracing eli säteenseuranta  Global illumination  Renderöinti

6  Refraction  Reflection  Emitting  Fluoresence

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11  Phong, Bui Tuong Phong Utah 1973  Blinn, phong-modification  Oren-Nayar, Michael Oren and Shree K. Nayar

12  Interpolating intensity between polygons  Shiny plastic surfaces

13  Approximation of Phong  Faster  Elleptic reflection in small angles

14  Simulates light reflection from rough surfaces

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16  Global lighting model and techniques for generating images  Ray tracing is simulated  Remarkable computing power needed  Can be calculated from camera or from light source

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20  Several techniques and algorithms are being used for realistig lighting  Fairly heavy  Difficult to implement in animations without aliasing and errors if comprehensive computing model is used

21  QMC  Irradiance cache  Radiosity map  Light map

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28  Really many controls!  Start small  Examine the effects  ->Think what is necessary  Animations need very much more quality because of flashing

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31 https://www.youtube.com/watch?v=PccWJ-zxlQw


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