Tonemapping
Mantiuk 2006 Tone Mapping
Adapt an image, which may have a high dynamic range, for presentation using a low dynamic range. This operator constrains contrasts across multiple spatial frequencies, producing luminance within the range 0.0-1.0.
Operation pads
This operation exposes the following data pads, defining how it receives, processes, and emits image data:
Input
Output
Operation properties
Contrast
gdouble
The amount of contrast compression.
Default
Value range
Default
0.10Value range
0.00 • • 1.00.Saturation
gdouble
Global color saturation factor.
Default
Value range
Default
0.80Value range
0.00 • • 2.00.Detail
gdouble
Level of emphasis on image gradient details.
Default
Value range
Default
1.00Value range
1.00 • • 99.00.Fattal et al. 2002 Tone Mapping
Adapt an image, which may have a high dynamic range, for presentation using a low dynamic range. This operator attenuates 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.
Reinhard 2005 Tone Mapping
Adapt an image, which may have a high dynamic range, for presentation using a low dynamic range. This is an efficient global operator derived from simple physiological observations, producing luminance within the range 0.0-1.0.