Objectives

• Get to know more about tone mapping
• Get to know more about color spaces

Getting Started

• Chapter 8 of text
• Read tonemaps/nonlinear.cpp
• Read the paper by Reinhard et al. 2002. Actually, you need to only read Section 3.1 of the paper.
• Read the papers by Ferwerda et al.1996, and Ferwerda et al. 1997. Obtain them from the ACM Digital Library. Both papers are in SIGGRAPH proceedings.

Tasks

• The code tonemaps/nonlinear.cpp is provided in pbrt distribution. Implement in standalone mode and not as a plugin. Pbrt is not required.
• Call your program erik and it should take as input HDR files and output a RGB format.
• Get the datasets from this site. The datasets are in the RGBe format. A description of this format is here and here
• Convert from RGB to YIQ

  

• For Erik et al's paper, implement the NonlinearOp tone mapping as described in pp. 400-401.
• Convert back to RGB.
• Other tonemapping operators can also be applied now. Implement the paper by Ferwerda et al. 1996 (or available from ACM Digital Library).
• Call your program ferdi and it should take as input HDR files and output a RGB format.
• Complete Problem 8.7 of text.
• More comparisons are welcome. Make sure you try several different illumination conditions.

What To Submit?

• Include ferdi.cpp and erik.cpp.
• Include links to anyHDR files that you used. Include the links in a README file.
• Submit all accessory files to compile.
• Send a web page with comparisions with other tonemapping operators.