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Pathtracing technics for Caustics

kinakomoti-321
September 05, 2022

Pathtracing technics for Caustics

This slide is made for a seminar in Raytracing Camp 8.
introducts pathtracing technics for Caustics:
- Manifold Exploration
- Manifold Next Event Estimation
- Specular Manifold Sampling
and instance of Shadow Caustics in Blender.

kinakomoti-321

September 05, 2022
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Transcript

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  3. Causticsとは? Causticsのレンダリング手法と問題点 Manifold Exploration Manifold NEE Specular Manifold Sampling BlenderのCaustics

    Rendering
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  7. https://twitter.com/ykozw88/status/1565215456272990214 より引用

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  9. Specular

  10. Specular

  11. Specular 密 疎

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  16. 100spp Reference 10000spp

  17. Specular Light Diffuse

  18. Specular Diffuse Light

  19. Specular Diffuse Light

  20. Specular Diffuse Light

  21. Specular Diffuse Light

  22. Specular Diffuse Light

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  25. https://twitter.com/yumcyawiz/status/1472510775856340994 より引用

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  45. 𝑆 = 𝑥1 , 𝑥2 , 𝑥3 , 𝑥4 ,

    𝑥5 ∈ 𝑃 𝑥2 𝑥3 + 𝑥3 𝑥4 ∥ 𝑁(𝑥3 )} Specularの条件
  46. 𝑆 = 𝑥1 , 𝑥2 , 𝑥3 , 𝑥4 ,

    𝑥5 ∈ 𝑃 𝑥2 𝑥3 + 𝑥3 𝑥4 ∥ 𝑁(𝑥3 )} Specularの条件
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  48. 法線n ハーフベクトルh 正しくない 法線n ハーフベクトルh 正しい

  49. 法線 n ハーフベクトルh 投影したh 正しくない 法線 n ハーフベクトルh 正しい

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  52. 𝑆 = ҧ 𝑥 𝐶 ҧ 𝑥 = 0}

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  76. Light Diffuse Specular 𝑥𝑑

  77. Light Diffuse Specular 𝑥𝑑 𝑥𝑙

  78. Light Diffuse Specular 𝑥𝑑 𝑥𝑙 𝑥𝑠 SeedPath

  79. Light Diffuse Specular 𝑥𝑑 𝑥𝑙 𝑥𝑠

  80. Light Diffuse Specular 𝑥𝑑 𝑥𝑙 𝑥𝑠 𝐶 ҧ 𝑥 =

    0
  81. Light Diffuse Specular 𝑥𝑑 𝑥𝑙 𝑥𝑠 SeedPath Admissible Path

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  85. Light Diffuse Specular 𝑥𝑑 𝑥𝑙

  86. Light Diffuse Specular 𝑥𝑑 𝑥𝑙 𝑋1 𝑋2 𝑌

  87. Light Diffuse Specular 𝑥𝑑 𝑥𝑙 𝑋1 𝑋2 𝑌

  88. Light Diffuse Specular 𝑥𝑑 𝑥𝑙 𝑋1 𝑋2 𝑌

  89. Light Diffuse Specular 𝑥𝑑 𝑥𝑙 𝑋1 𝑋2 𝑌

  90. Light Diffuse Specular 𝑥𝑑 𝑥𝑙 𝑋1 𝑌

  91. Light Diffuse Specular 𝑥𝑑 𝑥𝑙 𝑋1 𝑌

  92. Light Diffuse Specular 𝑥𝑑 𝑥𝑙 𝑌

  93. Light Diffuse Specular 𝑥𝑑 𝑥𝑙 𝑌

  94. Light Diffuse Specular 𝑥𝑑 𝑥𝑙 𝑌

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  97. Light Diffuse Specular 𝑥𝑑 𝑥𝑙 𝑥𝑠 𝑥𝑠 (𝜉1 , 𝜉2)

    = ([0,1),[0,1)) 𝜉1 , 𝜉2 で移動する
  98. Light Diffuse Specular 𝑥𝑑 𝑥𝑙 𝑋1 𝑋2 𝑌

  99. Light Diffuse Specular 𝑥𝑑 𝑥𝑙 𝑋1 𝑋2 𝑌

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  104. 𝑧3 − 1 = 0のニュートンフラクタル

  105. 𝑧3 − 1 = 0のニュートンフラクタル

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  132. https://youtu.be/Popg7ej4AUU Beautiful Results From 30 Years Of Light Transport Simulation!

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  134. https://www.blender.org/download/releases/3-2/

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