8.44. Fattal et al. 2002

8.44.1. Overview

図16.230 Fattal et al. 2002 tone mapping example

「Fattal et al. 2002」 tone mapping example

Original image

「Fattal et al. 2002」 tone mapping example

Filter applied with default settings, after changing image precision in GIMP to 32-bit floating point linear light.

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.

[注記] 注記

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.

8.44.2. Activating the filter

This filter is found in the image window menu under ColorsTone MappingFattal et al. 2002.

8.44.3. Options

図16.231 The Fattal et al. 2002 filter Dialog

The 「Fattal et al. 2002」 filter Dialog


Presets are a common feature for several Colors commands. You can find its description in 「Colors Common Features」.


Gradient threshold for detail enhancement.


Strength of local detail enhancement.


Global color saturation factor.


Gradient threshold for lowering detail enhancement.

Input Type, Clipping, Blending Options, Preview and Split view

These are common features described in 「Colors Common Features」.