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 reduces the magnitudes of local image gradients, producing luminance within the range 0.0-1.0.
This tonemapping approach was originally presented by Raanan Fattal, in the 2002 SIGGRAPH paper: Gradient Domain High Dynamic Range Compression.
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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 第 8.1.1 节 “Colors Common Features”.
Gradient threshold for detail enhancement.
Strength of local detail enhancement.
Global color saturation factor.
Gradient threshold for lowering detail enhancement.
These are common features described in 第 8.1.1 节 “Colors Common Features”.