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.
Alpha
Gradient threshold for detail enhancement
name: alpha type: double default: 1.00 minimum: 0.00 maximum: 2.00 ui-minimum: 0.00 ui-maximum: 2.00 ui-gamma: 1.00 ui-step-small: 0.00 ui-step-big: 0.10 ui-digits: 3
Beta
Strength of local detail enhancement
name: beta type: double default: 0.90 minimum: 0.10 maximum: 2.00 ui-minimum: 0.10 ui-maximum: 2.00 ui-gamma: 1.00 ui-step-small: 0.00 ui-step-big: 0.10 ui-digits: 3
Saturation
Global color saturation factor
name: saturation type: double default: 0.80 minimum: 0.00 maximum: 1.00 ui-minimum: 0.00 ui-maximum: 1.00 ui-gamma: 1.00 ui-step-small: 0.00 ui-step-big: 0.10 ui-digits: 3
Noise
Gradient threshold for lowering detail enhancement
name: noise type: double default: 0.00 minimum: 0.00 maximum: 1.00 ui-minimum: 0.00 ui-maximum: 1.00 ui-gamma: 1.00 ui-step-small: 0.00 ui-step-big: 0.10 ui-digits: 3
name: gegl:fattal02
pads: input output
parent-class: GeglOperationFilter
categories: tonemapping enhance
source: operations/common/fattal02.c
reference-hashB: a78d262e8a45e961d3b05bcead9e582e
GEGL This page is part of the online GEGL Documentation, GEGL is a data flow based image processing library/framework, made to fuel GIMPs high-bit depth non-destructive editing future.