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Chapter 5: HDR Image Processing

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This chapter is not about tonemapping. Or better said, it’s about all the things you can do without tonemapping. We will have a closer look at image editing in floating-point space.

See, all these tonemapping tools are pretty selfish. They can do their magic only because the underlying HDR data has this incredibly fine color resolution. So fine that it’s almost analog again. But a tonemapper would use it all up and leave you with plain old 256 steps in each color channel. Maybe more when you’re saving 16-bit files ...

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