本文概述了第8至10章的内容，探讨了从影调映射到反射模型及材质的一系列图像处理和渲染技术。介绍了影调映射的各种方法，包括对比度增强技术和Bloom效果；深入解析了光的反射、透射与扩散的物理原理，并讨论了几种微表面模型；最后综述了不同材质模型及其在图像渲染中的应用。
This note is for Chapter 8 to 10. Things are getting more interesting in these chapters.
Chapter 8 ‘Film & the Imaging Pipeline’ actually elaborates some image processing issues mainly on tone mapping. Tone mapping is not as simple as I thought before(of course). Only linear mapping (plus Gammar correction maybe) sometimes doesn’t meet the requirements. Contrast-based techniques are then brought up, and together with the adaptive contrast-based fixing. Also an attracting technique called Bloom is introduced too. It is not tricky but can retouch your image a lot.
Chapter 9 ‘Reflection Models’ introduces the physically aspect of light reflection & transmission & diffusion in detail. Several microfacet models are also introduced, using distribution functions instead of concrete geometrical based methods.
Chapter 10 ‘Materials’ is kinda of a summary of Chapter 9. Materials are a collection of reflection models in chapter 9. Not a big deal. But the well-known ‘Bump-mapping’ technique is stated too – subtle…
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