PBRT reading notes 3

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…