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Merge pull request #65 from RawTherapee/cieca
Change image CIECAM02
2 parents acc162e + 6d261c0 commit cba61c9

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content/CIECAM02/catatauto1.jpg

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content/CIECAM02/catatwb1.jpg

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content/CIECAM02/ciecam_ligh1.jpg

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content/CIECAM02/index.md

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[1](https://drive.google.com/file/d/1ctjOWX2lVmgcAzJtBwt69FGpxZOq-LyP/view?usp=sharing)
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<figure>
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<img src="/images/ciecam_light_prepa.jpg" title="ciecam_light_prepa.jpg"
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<img src="ciecam_light_prepa1.jpg" title="ciecam_light_prepa1.jpg"
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width="600" />
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<figcaption>ciecam_light_prepa.jpg</figcaption>
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<figcaption>ciecam_light_prepa1.jpg</figcaption>
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</figure>
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##### Lighten the image
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Go to the Advanced tab and select Color Appearance & Lighting
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(CIECAM02/16). Under Scene Conditions set the Surround-Scene Lighting
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combobox to Dark. That's it!
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<img src="/images/ciecam_ligh.jpg" title="ciecam_ligh.jpg" width="600"
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alt="ciecam_ligh.jpg" />
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<img src="ciecam_ligh1.jpg" title="ciecam_ligh1.jpg" width="600"
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alt="ciecam_ligh1.jpg" />
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You can refine the adjustment using the Image Adjustments settings.
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correlation".
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<figure>
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<img src="/images/catATwb.jpg" title="catATwb.jpg" width="600" />
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<figcaption>catATwb.jpg</figcaption>
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<img src="catatwb1.jpg" title="catatwb1.jpg" width="600" />
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<figcaption>catatwb1.jpg</figcaption>
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</figure>
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Examine the result:
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That's it!
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<figure>
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<img src="/images/catATauto.jpg" title="catATauto.jpg" width="600" />
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<figcaption>catATauto.jpg</figcaption>
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<img src="catatauto1.jpg" title="catatauto1.jpg" width="600" />
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<figcaption>catatauto1.jpg</figcaption>
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</figure>
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Look at the image, the sky is blue and the skin tones of the passers-by
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- Surround = Dim: the TV is set against a dark wall.
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<figure>
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<img src="/images/voyagejpg.jpg" title="voyagejpg.jpg" width="600" />
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<figcaption>voyagejpg.jpg</figcaption>
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<img src="voyagejpg1.jpg" title="voyagejpg1.jpg" width="600" />
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<figcaption>voyagejpg1.jpg</figcaption>
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</figure>
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Important note: The same image viewed on your PC will not look good
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Of course, we are so keen to impress our guests that we have cheated a
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little by adding some extra contrast and chroma.
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<img src="/images/voyage_plus.jpg" title="voyage_plus.jpg" width="600"
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alt="voyage_plus.jpg" />
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<img src="voyage_plus1.jpg" title="voyage_plus1.jpg" width="600"
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alt="voyage_plus1.jpg" />
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## Local Adjustments - Color Appearance (Cam16 & JzCzHz Experimental)
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colors...
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(Creative Common Attribution-share Alike 4.0)
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<img src="/images/Simult-contr1.jpg" title="Simult-contr1.jpg" width="600"
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alt="Simult-contr1.jpg" />
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<img src="/images/Simult-contr3.jpg" title="Simult-contr3.jpg" width="600"
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alt="Simult-contr3.jpg" />
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<img src="simult-contr1-1.jpg" title="simult-contr1-1.jpg" width="600"
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alt="simult-contr1-1.jpg" />
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<img src="simult-contr3-1.jpg" title="simult-contr3-1.jpg" width="600"
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alt="simult-contr3-1.jpg" />
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#### the Hunt's effect
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Increased seen coloration (colorfulness) with luminance. An object
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appears more vivid and contrasty in full light than in shade. (Creative
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Common Attribution-share Alike 4.0)
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<img src="/images/Huntseffect1.jpg" title="Huntseffect1.jpg" width="600"
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alt="Huntseffect1.jpg" />
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<img src="/images/Huntseffect-2.jpg" title="Huntseffect-2.jpg" width="600"
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alt="Huntseffect-2.jpg" />
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<img src="huntseffect1-1.jpg" title="huntseffect1-1.jpg" width="600"
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alt="huntseffect1-1.jpg" />
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<img src="huntseffect-2-1.jpg" title="huntseffect-2-1.jpg" width="600"
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alt="huntseffect-2.jpg" />
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#### Stevens's effect
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Augmentation of the perceived contrast with the luminance. When the
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luminance increases, the dark colors looks like even darker and the
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luminous colors appears even more luminous. (Creative Common
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Attribution-share Alike 4.0)
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<img src="/images/Simult-contr2.jpg" title="Simult-contr2.jpg" width="600"
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alt="Simult-contr2.jpg" />
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<img src="simult-contr2-1.jpg" title="simult-contr2-1.jpg" width="600"
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alt="simult-contr2-1.jpg" />
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#### Helmholtz-Kohlrausch's effect
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Dependence of the brightness in relation to the luminance and
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chromaticity. Colored objects appear lighter than the achromatic objects
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with the same luminance. The most saturated colors appear brighter.
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(Creative Common Attribution-share Alike 4.0)
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<img src="/images/Helmholtz-effect.jpg" title="Helmholtz-effect.jpg" width="600"
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alt="Helmholtz-effect.jpg" />
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<img src="helmholtz-effect1.jpg" title="helmholtz-effect1.jpg" width="600"
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alt="helmholtz-effect1.jpg" />
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#### Chromatic adaptation
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