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add lecture notes on Ray Tracing Light Transport in GAMES101
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---
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title: "lecture 14: Ray Tracing Light Transport"
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date: 2025-01-02
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url: https://www.bilibili.com/video/BV1X7411F744?p=15
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tags:
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- computer_graphics
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---
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## Basic radiometry
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- Radiant flux:电磁辐射能量(J)和通量(W 功率, lm 流明)
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- Intensity: 单个立体角上的功率(cd)
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- Irradiance: 单位面积上的功率(lux),要投影到平面方向上,Lambert's Cosine Law正是基于此。
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- Radiance: 单位立体角并且单位面积上,是前两者的结合。
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微分立体角
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Irradiance可以解释因为距离导致的衰减。
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## Light transport
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### The reflection equation
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### The rendering equation
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## Global illumination

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