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Adaptieve en progressieve
       RayTracing
       Davy Debacker
Teapot Puntlinchtbron
• Referentieprentje (400 samples per pixel)
DCT
• 2.6M Samples (Eq 10 samples per pixel op 512x512)


  Teapot                       DCT representatie
DCT
• 2.6M Samples (Eq 10 samples per pixel op 512x512)


  Teapot                       Sample dichtheid
DCT
              • Vergelijking met standaard MC
                                  Gemiddelde fout Teapot puntlichtbron
                  1.20E-04



                  1.00E-04



                  8.00E-05
Gemiddelde Fout




                  6.00E-05
                                                                                         Standaard MC
                                                                                         DCT
                  4.00E-05



                  2.00E-05



                  0.00E+00
                             10   20           30                  40          50   60
                                         Equivalent Aantal Samples per Pixel
Wavelet
• 2.6M Samples (Eq 10 samples per pixel op 512x512)


  Teapot                       Wavelet representatie
Wavelet
• 2.6M Samples (Eq 10 samples per pixel op 512x512)


  Teapot                       Sample dichtheid
Wavelet
              • Vergelijking met standaard MC

                                  Gemiddelde fout teapot puntlichtbron
                  1.20E-04



                  1.00E-04



                  8.00E-05
Gemiddelde fout




                  6.00E-05
                                                                                         Wavelets
                                                                                         Standaard MC
                  4.00E-05



                  2.00E-05



                  0.00E+00
                             10   20           30                  40          50   60
                                         Equivalent aantal samples per pixel
Vergelijking
              • Vergelijking met de drie methodes

                                  Gemiddelde fout teapot puntlichtbron
                  1.20E-04



                  1.00E-04



                  8.00E-05
Gemiddelde Fout




                  6.00E-05                                                               Wavelets
                                                                                         Standaard MC
                                                                                         DCT
                  4.00E-05



                  2.00E-05



                  0.00E+00
                             10   20           30                  40          50   60
                                         Equivalent Aantal Samples per Pixel
Teapot Oppervlaktelinchtbron
• Referentieprentje (400 samples per pixel)
DCT
• 2.6M Samples (Eq 10 samples per pixel op 512x512)


  Teapot                       DCT representatie
DCT
• 2.6M Samples (Eq 10 samples per pixel op 512x512)


  Teapot                       DCT representatie
DCT
• 2.6M Samples (Eq 10 samples per pixel op 512x512)


  Teapot                       Sample dichtheid
DCT
              • Vergelijking met standaard MC

                               Gemiddelde fout Teapot oppervlaktelichtbron
                  0.007


                  0.006


                  0.005
Gemiddelde Fout




                  0.004


                                                                                        Standaard MC
                  0.003
                                                                                        DCT

                  0.002


                  0.001


                     0
                          10     20           30                  40          50   60
                                        Equivalent Aantal Samples per Pixel
Wavelet
• 2.6M Samples (Eq 10 samples per pixel op 512x512)


  Teapot                       Wavelet representatie
Wavelet
• 2.6M Samples (Eq 10 samples per pixel op 512x512)


  Teapot                       Sample dichtheid
Wavelet
                  • Vergelijking met standaard MC

                               Gemiddelde fout Teapot oppervlaktelichtbron
                  0.007


                  0.006


                  0.005
Gemiddelde Fout




                  0.004


                                                                                        Wavelets
                  0.003
                                                                                        Standaard MC

                  0.002


                  0.001


                     0
                          10     20           30                  40          50   60
                                        Equivalent Aantal Samples per Pixel
Vergelijking
                  • Vergelijking met de drie methodes

                               Gemiddelde fout Teapot oppervlaktelichtbron
                  0.007


                  0.006


                  0.005
Gemiddelde Fout




                  0.004

                                                                                        Wavelets
                  0.003                                                                 Standaard MC
                                                                                        DCT
                  0.002


                  0.001


                     0
                          10     20           30                  40          50   60
                                        Equivalent Aantal Samples per Pixel
Buddha oppervlaktelichtbron
• Referentieprentje (400 samples per pixel)
DCT
• 2.6M Samples (Eq 10 samples per pixel op 512x512)


  Buddha                       DCT representatie
DCT
• 2.6M Samples (Eq 10 samples per pixel op 512x512)


  Buddha                       Sample dichtheid
Wavelet
• 2.6M Samples (Eq 10 samples per pixel op 512x512)


  Buddha                       Wavelet representatie
Wavelet
• 2.6M Samples (Eq 10 samples per pixel op 512x512)


  Buddha                       Sample dichtheid
Buddha vergelijking
                                   Gemiddelde fout Buddha
                  0.06



                  0.05



                  0.04
Gemiddelde Fout




                  0.03                                                             Wavelets
                                                                                   Standaard MC
                                                                                   DCT
                  0.02



                  0.01



                    0
                         10   20         30                  40          50   60
                                   Equivalent Aantal Samples per Pixel
Buddha vergelijking
                                     Maximale fout Buddha
                  0.7


                  0.6


                  0.5
Gemiddelde Fout




                  0.4

                                                                                  Wavelets
                  0.3                                                             Standaard MC
                                                                                  DCT
                  0.2


                  0.1


                   0
                        10   20         30                  40          50   60
                                  Equivalent Aantal Samples per Pixel
Cornel
• Referentieprentje (400 samples per pixel)
Cornel puntlichtbron
• 26M Samples (Eq 100 samples per pixel op 512x512)
Cornel puntlichtbron
• 26M Samples (Eq 100 samples per pixel op 512x512)
DCT
• 2.6M Samples (Eq 10 samples per pixel op 512x512)


  Cornel                       Sample dichtheid
Wavelet
• 2.6M Samples (Eq 10 samples per pixel op 512x512)


  Cornel                       Sample dichtheid
Cornel vergelijking
                                     Gemiddelde fout cornel
                  0.008


                  0.007


                  0.006


                  0.005
Gemiddelde Fout




                  0.004                                                             Wavelets
                                                                                    Standaard MC
                  0.003
                                                                                    DCT

                  0.002


                  0.001


                     0
                          10   20         30                  40          50   60
                                    Equivalent Aantal Samples per Pixel
Dragon
• Referentieprentje (400 samples per pixel)
DCT
• 2.6M Samples (Eq 10 samples per pixel op 512x512)


  Dragon                       Sample dichtheid
DCT
• 2.6M Samples (Eq 10 samples per pixel op 512x512)


  Dragon                       DCT voorstelling
Wavelet
• 2.6M Samples (Eq 10 samples per pixel op 512x512)


  Dragon                       Sample dichtheid
Wavelet
• 2.6M Samples (Eq 10 samples per pixel op 512x512)


  Dragon                       Wavelet voorstelling
Dragon vergelijking
                                     Gemiddede fout dragon
                  0.035


                   0.03


                  0.025
Gemiddelde Fout




                   0.02

                                                                                    Wavelets
                  0.015                                                             Standaard MC
                                                                                    DCT
                   0.01


                  0.005


                     0
                          10   20         30                  40          50   60
                                    Equivalent Aantal Samples per Pixel
Balls DCT (15M samples)
Balls Wavelets (15M samples)
Dragon DCT (18M samples)
Dragon Wavelets (18M samples)
Mountain DCT (18M samples)
Mountain Wavelets (18M samples)
Plants DCT (18M samples)
Plants Wavelets (18M samples)

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Resultaten DCT en Wavelet gebaseerde Ray Tracer