This filter can be used to adapt an image, which may have a high dynamic range (HDR), for presentation using a low dynamic range. This operation constrains contrasts across multiple spatial frequencies, producing luminance within the range 0.0-1.0.
This tonemapping approach was originally presented by Rafał Mantiuk, Karol Myszkowski, Hans-Peter Seidel. “A Perceptual Framework for Contrast Processing of High Dynamic Range Images (revised and extended version)”. In: ACM Transactions on Applied Perception 3, 3 (2006), pp. 286-308.
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This filter is slow on larger images. For finding the best settings for your image you could make a small relevant selection first and save that as a preset before using that for the whole image. |
“Presets” are a common feature for several Colors commands. You can find its description in Section 8.1.1, “Colors Common Features”.
The amount of contrast compression.
Global color saturation factor.
Level of emphasis on image gradient details.
These are common features described in Section 8.1.1, “Colors Common Features”.