Tone mapping: Difference between revisions

Revision as of 20:33, 9 September 2005

Revision as of 16:24, 2 November 2005

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range of luminance values.

Various tone mapping operators have been developed in the recent years {{ref|devlin}}. A simple example of tone

(see STAR report in references section for a complete survey). A simple example of tone

mapping filter is <math>L=Y/(Y+1)</math>. This function will map scene

radiance values <math>Y</math> in the ___domain <math>[0, infinity]\infty)</math> to a

displayable output range of <math>[0, 1)</math>.

A more sophisticated group of tone mapping algorithms is based on contrast or

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small contrast details, however this is often done at the cost of

flattening an overall image contrast. An examples of such tone mapping

methods include: Gradient Domain High Dynamic Range Compression{{ref|fattal}}

"and A Perceptual Framework for Contrast Processing of High Dynamic Range Images"{{ref|mantiuk}} (a tone mapping is one of the applications of this framework).

[http://www.cs.huji.ac.il/~danix/hdr/ Gradient Domain High Dynamic Range Compression]

and

[http://www.mpi-sb.mpg.de/~mantiuk/contrast_domain/ A Perceptual Framework for Contrast Processing of High Dynamic Range Images]

(a tone mapping is one of the applications of this framework).

An interesting approach to tone mapping of high dynamic range (HDR)

images is inspired by the Anchoring Theory of Lightness Perception{{ref|gilchrist}}.

[http://psychology.rutgers.edu/~alan/theory3/ Anchoring Theory of Lightness Perception].

This theory comprehensively explains many characteristics

of the human visual system such as lightness constancy and its spectacular

failures, which are important in the perception of images. The key

concept of this tone mapping method (Lightness Perception in Tone Reproduction{{ref|krawczyk}})

([http://www.mpi-sb.mpg.de/~krawczyk/p_eg05.html Lightness Perception in Tone Reproduction])

is a decomposition of an HDR image into areas

(frameworks) of consistent illumination and the local calculation of

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luminance.

==References==

#{{note|devlin}} Kate Devlin, Alan Chalmers, Alexander Wilkie, Werner Purgathofer. "STAR Report on Tone Reproduction and Physically Based Spectral Rendering" in [[Eurographics]] 2002. [[Digital object identifier|DOI]]: [http://doi.acm.org/10.1145/1073204.1073242 10.1145/1073204.1073242]

==Reference papers==

#{{note|fattal}} Raanan Fattal, Dani Lischinski, Michael Werman. [http://www.cs.huji.ac.il/~danix/hdr/ "Gradient Domain High Dynamic Range Compression"]

#{{note|mantiuk}} Rafal Mantiuk, Karol Myszkowski, Hans-Peter Seidel. [http://www.mpi-sb.mpg.de/~mantiuk/contrast_domain/ "A Perceptual Framework for Contrast Processing of High Dynamic Range Images"]

* Kate Devlin, Alan Chalmers, Alexander Wilkie, Werner Purgathofer.

#{{note|gilchrist}} Alan Gilchrist. [http://psychology.rutgers.edu/~alan/theory3/ "An Anchoring Theory of Lightness Perception"].

"STAR Report on Tone Reproduction and Physically Based Spectral Rendering"

(#{{note|krawczyk}} Grzegorz Krawczyk, Karol Myszkowski, Hans-Peter Seidel. [http://www.mpi-sb.mpg.de/~krawczyk/p_eg05.html "Lightness Perception in Tone Reproduction for High Dynamic Range Images"])

* Frédo Durand and Julie Dorsey.

"Fast Bilateral Filtering for the Display of High-Dynamic-Range Images"

* Raanan Fattal, Dani Lischinski, Michael Werman.

"Gradient Domain High Dynamic Range Compression"

* Grzegorz Krawczyk, Karol Myszkowski, Hans-Peter Seidel.

"Lightness Perception in Tone Reproduction for High Dynamic Range Images"

* Rafal Mantiuk, Karol Myszkowski, Hans-Peter Seidel.

"A Perceptual Framework for Contrast Processing of High Dynamic Range Images"

* Erik Reinhard, Mike Stark, Peter Shirley, and James Ferwerda.

"Photographic Tone Reproduction for Digital Images"

==External links==

* [http://www.mpii.mpg.de/resources/tmo/ Implementationpfstmo: ofimplemenation state-of-the-art tone mapping operators]

===Tone mapping algorithms===

[http://www.cs.utah.edu/~reinhard/cdrom/ Photographic Tone Reproduction for Digital Images]

"* [http://www.cs.utah.edu/~reinhard/cdrom/ Photographic Tone Reproduction for Digital Images"]

* [http://www.mpi-inf.mpg.de/~krawczyk/p_eg05.html Lightness Perception in Tone Reproduction for High Dynamic Range Images].

* [http://www.mpi-sbinf.mpg.de/~mantiuk/contrast_domain/ A Perceptual Framework for Contrast Processing of High Dynamic Range Images].

* [http://wwwpeople.mpi-infcsail.mpgmit.deedu/~mantiukfredo/contrast_domainPUBLI/Siggraph2002/ ContrastFast ProcessingBilateral Filtering for the Display of High -Dynamic -Range Images].

* [http://www.cs.huji.ac.il/~danix/hdr/ Gradient Domain High Dynamic Range Compression]

* [http://www.mpii.mpg.de/resources/tmo/ Implementation of state-of-the-art tone mapping operators]

[http://people.csail.mit.edu/fredo/PUBLI/Siggraph2002/ Fast Bilateral Filtering for the Display of High-Dynamic-Range Images]

[http://www.cs.huji.ac.il/~danix/hdr/ Gradient Domain High Dynamic Range Compression]

[http://www.mpii.mpg.de/resources/tmo/ Implementation of state-of-the-art tone mapping operators]

[[Category:Computer graphics]]