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Sampling. Ray tracing v. photorealistic rendering LDSE notation caustics. Rendering as integration Irradiance Radiance exitance radiance. Integration estimation by sampling Law of large numbers Expected value Variance & standard deviation Law of diminishing returns
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Ray tracing v. photorealistic rendering LDSE notation caustics Rendering as integration Irradiance Radiance exitance radiance Integration estimation by sampling Law of large numbers Expected value Variance & standard deviation Law of diminishing returns Stratified sampling Importance sampling