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High Dynamic Range Imaging, 2nd Edition by Karol Myszkowski, Greg Ward, Sumanta Pattanaik, Paul Debevec, Wolfgang Heidrich, Erik Reinhard

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Tone-Reproduction Operators

08

While the previous chapter presented a tutorial on various aspects of tone reproduction, and showed that a large class of operators are at the high level equivalent, at the implementation level there still exist significant differences which ought to be taken into account when implementing specific tone-reproduction operators. Without aiming for completeness, in this chapter, we discuss the most prevalent tone-reproduction operators, ranging from sigmoidal compression to image appearance models to a collection of perception-and engineering-based methods.

8.1 SIGMOIDAL TONE-REPRODUCTION OPERATORS

As discussed in this chapter, a relatively well-populated class of operators uses an S-shaped curve (usually when plotted ...

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