computer graphics lights

Download Computer Graphics Lights

Post on 25-Jan-2015

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компютърна графика модели осветеност реалистични изображения

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  • 1. . .

2. : 3. , 4. ? 5. , 3D 6. : , 7. 8. , : , , , 9. : - , - 10. : I : 11. 12. - 13. - , Ia I :I=Kd.Ia ,Kd 14. Kd 0 1 Kd 1 Kd 0 , - 15. - 16. 17. , - 18. :I=Kd.Ip.cos ,Kd - ,Ip , - 19. N.L=|N|.|L|. cos N=N/|N|, L=L/|L| - cos=L.N, I=Kd.Ip.(L.N) cos 1 0 ( 0 90) cos < 0 20. :I=Kd.Ip.(L.N)/d2 I=Kd.Ip.(L.N)/(d+d0) , d0- , 21. :Id=Kd.Ia+Kd.Ip.(L.N)/(d+d0) 22. Kdr, Kdg, Kdb RGB Kdg = 1, Kdr = Kdb = 0 - Idg=Kdg.Iag+Kdg.Ipg.(L.N)/(d+d0) 23. Q L , N R NL QR 24. V - R V R 25. , :cosns f 0 90, cos 1 0 ns : - 1 26. R 27. ns , 28. : I=Kd.Ia+Ip/(d+d0)[Kd.L.N+W(q).cosn] W(q) - , 29. Q=90 W(q) 0 1, 0 90 W(q) Q s 30. , : I=Kd.Ia+Ip/(d+d0)[(Kd.L.N+KsVR)n] 31. : Kd, Ks, do Ia, Ip (Ks ) 32. , : L.N 33. : : : , ( ) , 34. ( ), 35. : 36. - 37. 14 5 62 3+ -1 4I = I Y -Y4 1 Y Y1 224 21 2I Y YY Y--+ -5 4I = I X -X5 4 X X6 466 56 4I X XX X--Np = (N1+ N2 + N3)3 38. () : 39. 40. :

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