Color Management - Revision history

Jdc: /* Several improvements have been made - March 2024 */

2024-03-05T12:24:40Z

Several improvements have been made - March 2024

← Older revision		Revision as of 12:24, 5 March 2024
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	You can find the description of these features in "Local Adjustments" - "Color Appearance (Cam16 & JzCzHz)		You can find the description of these features in "Local Adjustments" - "Color Appearance (Cam16 & JzCzHz)

	[[Local_Adjustments~~/fr~~#~~Cam16_-_avec_prétraitement_HDR_branch_lacam16n~~ \| Local Adjustments - Cam16 ~~avec prétraitement~~ HDR]]		[[Local_Adjustments#Cam16_tutorial_with_an_HDR_image \| Local Adjustments - Cam16 with HDR]]

	== Output Profile ==		== Output Profile ==

Jdc: /* Possible example of use to modify/improve the behavior of the Input profile */

2024-03-05T12:21:30Z

Possible example of use to modify/improve the behavior of the Input profile

← Older revision		Revision as of 12:21, 5 March 2024
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	Note: the values can of course be adjusted empirically as in ART and Lightroom. For small deviations from the original primaries, the results are fairly predictable. On the other hand, if we make big changes, the results will be less so.		Note: the values can of course be adjusted empirically as in ART and Lightroom. For small deviations from the original primaries, the results are fairly predictable. On the other hand, if we make big changes, the results will be less so.


			===Several improvements have been made - March 2024===
			These improvements concern:
			* GUI interface;
			* the number of primaries and illuminants;
			* the possibility of acting on the dominant color from the CIExy diagram
			[[File:cie-abstract_graph4.jpg\|600px\|thumb\|center\|Abstract profiles]]

			You can find the description of these features in "Local Adjustments" - "Color Appearance (Cam16 & JzCzHz)

			[[Local_Adjustments/fr#Cam16_-_avec_prétraitement_HDR_branch_lacam16n \| Local Adjustments - Cam16 avec prétraitement HDR]]

	== Output Profile ==		== Output Profile ==

Jdc at 17:04, 21 June 2023

2023-06-21T17:04:18Z

← Older revision		Revision as of 17:04, 21 June 2023
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	* Switch to Neutral.		* Switch to Neutral.
	* Load the image of the chart that was used to create the Input profile, with corresponding white balance settings.		* Load the image of the chart that was used to create the Input profile, with corresponding white balance settings.
	* Choose the profile (Bundled profiles...) that you usually use (default : Auto match Curve - ISO Low), with no ~~others~~ settings.		* Choose the profile (Bundled profiles...) that you usually use (default : Auto match Curve - ISO Low), with no other settings.
	* Choose Abstract Profile > Custom. By default the selected profile will be the same as the Working profile (as will the Illuminant). Do not change these values.		* Choose Abstract Profile > Custom. By default the selected profile will be the same as the Working profile (as will the Illuminant). Do not change these values.
	* Select Custom in "Destination primaries”.		* Select Custom in "Destination primaries”.

Jdc: /* Some Primary values */

2023-06-06T11:38:46Z

Some Primary values

← Older revision		Revision as of 11:38, 6 June 2023
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	* ProPhoto - Red x=0.7347 y=0.2653 - Green x=0.1596 y=0.8404 - Blue x=0.0366 y=0.0001		* ProPhoto - Red x=0.7347 y=0.2653 - Green x=0.1596 y=0.8404 - Blue x=0.0366 y=0.0001
	* ACESp0 - Red x=0.7347 y=0.2653 - Green x=0 y=1.0 - Blue x=0.0001 y=-0.077		* ACESp0 - Red x=0.7347 y=0.2653 - Green x=0 y=1.0 - Blue x=0.0001 y=-0.077
			* JDCmax - Red x=0.7347 y=0.2653 - Green x=0.0219 y=0.903 - Blue x=0.1206 y=0.0016

	When one of the primaries is outside the limits of human vision we speak of imaginary colors.		When one of the primaries is outside the limits of human vision we speak of imaginary colors.

Jdc: /* Possible example of use to modify/improve the behavior of the Input profile */

2023-06-01T11:44:04Z

Possible example of use to modify/improve the behavior of the Input profile

← Older revision		Revision as of 11:44, 1 June 2023
Line 391:		Line 391:
	* Switch to Neutral.		* Switch to Neutral.
	* Load the image of the chart that was used to create the Input profile, with corresponding white balance settings.		* Load the image of the chart that was used to create the Input profile, with corresponding white balance settings.
	* Choose the profile (Bundled profiles...) that you usually use.		* Choose the profile (Bundled profiles...) that you usually use (default : Auto match Curve - ISO Low), with no others settings.
	* Choose Abstract Profile > Custom. By default the selected profile will be the same as the Working profile (as will the Illuminant). Do not change these values.		* Choose Abstract Profile > Custom. By default the selected profile will be the same as the Working profile (as will the Illuminant). Do not change these values.
	* Select Custom in "Destination primaries”.		* Select Custom in "Destination primaries”.

Jdc: /* Possible example of use to modify/improve the behavior of the Input profile */

2023-06-01T11:18:13Z

Possible example of use to modify/improve the behavior of the Input profile

← Older revision		Revision as of 11:18, 1 June 2023
Line 390:		Line 390:

	* Switch to Neutral.		* Switch to Neutral.
	* Load the image of the chart that was used to create the Input profile.		* Load the image of the chart that was used to create the Input profile, with corresponding white balance settings.
	* Choose the profile (Bundled profiles...) that you usually use.		* Choose the profile (Bundled profiles...) that you usually use.
	* Choose Abstract Profile > Custom. By default the selected profile will be the same as the Working profile (as will the Illuminant). Do not change these values.		* Choose Abstract Profile > Custom. By default the selected profile will be the same as the Working profile (as will the Illuminant). Do not change these values.

Jdc: /* Possible example of use to modify/improve the behavior of the Input profile */

2023-06-01T11:12:01Z

Possible example of use to modify/improve the behavior of the Input profile

← Older revision		Revision as of 11:12, 1 June 2023
Line 391:		Line 391:
	* Switch to Neutral.		* Switch to Neutral.
	* Load the image of the chart that was used to create the Input profile.		* Load the image of the chart that was used to create the Input profile.
			* Choose the profile (Bundled profiles...) that you usually use.
	* Choose Abstract Profile > Custom. By default the selected profile will be the same as the Working profile (as will the Illuminant). Do not change these values.		* Choose Abstract Profile > Custom. By default the selected profile will be the same as the Working profile (as will the Illuminant). Do not change these values.
	* Select Custom in "Destination primaries”.		* Select Custom in "Destination primaries”.

Jdc: /* Abstract Profiles */

2023-01-19T16:13:52Z

Abstract Profiles

← Older revision		Revision as of 16:13, 19 January 2023
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	* TRC: adjust gamma and slope to: a) modify the image rendering, which by default is g=2.4 s=12.92; b) raise the shadows and modify the lighter tones while preserving the colorimetry and the gamut.		* TRC: adjust gamma and slope to: a) modify the image rendering, which by default is g=2.4 s=12.92; b) raise the shadows and modify the lighter tones while preserving the colorimetry and the gamut.
	* Illuminant (white point): a) adjust the gamut of the Working profile to adapt it to the shooting conditions taking into account the colorimetry. If an image is taken at 4000K, in sRGB (which is D65), the gamut may not be suitable. The joint action of the Illuminant and CIECAM (symmetrical mode) allows you to ensure good chromatic adaptation; b) used in conjunction with the modification of the Primaries below.		* Illuminant (white point): a) adjust the gamut of the Working profile to adapt it to the shooting conditions taking into account the colorimetry. If an image is taken at 4000K, in sRGB (which is D65), the gamut may not be suitable. The joint action of the Illuminant and CIECAM (symmetrical mode) allows you to ensure good chromatic adaptation; b) used in conjunction with the modification of the Primaries below.
	* Primaries: this is where the notion of Abstract profiles comes into its own. ~~Several possibilities are available: a) Use~~ this module as a Channel Mixer ~~in order~~ to create special effects similar to Color Toning, with or without CIECAM~~; b) More simply~~ restore ~~colors~~ (saturation) ~~to an image,~~ in ~~most cases maintaining~~ the ~~balance~~ of ~~colors; c) Use it~~ to modify or refine the result of the Input profile to improve the colorimetry (calibration).		* Primaries: this is where the notion of Abstract profiles comes into its own. You can use this module:
			** as a Channel Mixer to create special effects similar to Color Toning, with or without CIECAM.
			** to restore image color (saturation). Color balance will be maintained in the majority of cases.
			** to modify or refine the result of the Input profile to improve the colorimetry (calibration).


	===Where is it located in the toolchain pipeline?===		===Where is it located in the toolchain pipeline?===

Jdc: /* Three main uses (with or without CIECAM) */

2023-01-15T06:48:44Z

Three main uses (with or without CIECAM)

← Older revision		Revision as of 06:48, 15 January 2023
Line 240:		Line 240:
	* TRC: adjust gamma and slope to: a) modify the image rendering, which by default is g=2.4 s=12.92; b) raise the shadows and modify the lighter tones while preserving the colorimetry and the gamut.		* TRC: adjust gamma and slope to: a) modify the image rendering, which by default is g=2.4 s=12.92; b) raise the shadows and modify the lighter tones while preserving the colorimetry and the gamut.
	* Illuminant (white point): a) adjust the gamut of the Working profile to adapt it to the shooting conditions taking into account the colorimetry. If an image is taken at 4000K, in sRGB (which is D65), the gamut may not be suitable. The joint action of the Illuminant and CIECAM (symmetrical mode) allows you to ensure good chromatic adaptation; b) used in conjunction with the modification of the Primaries below.		* Illuminant (white point): a) adjust the gamut of the Working profile to adapt it to the shooting conditions taking into account the colorimetry. If an image is taken at 4000K, in sRGB (which is D65), the gamut may not be suitable. The joint action of the Illuminant and CIECAM (symmetrical mode) allows you to ensure good chromatic adaptation; b) used in conjunction with the modification of the Primaries below.
	* Primaries: this is where the notion of Abstract profiles comes into its own. Several possibilities are available: a) Use this module as a Channel Mixer in order to create special effects similar to Color Toning, with or without CIECAM; b) ~~more~~ simply restore colors (saturation) to an image, in most cases maintaining the balance of colors; c) Use it to modify or refine the result of the Input profile to improve the colorimetry (calibration).		* Primaries: this is where the notion of Abstract profiles comes into its own. Several possibilities are available: a) Use this module as a Channel Mixer in order to create special effects similar to Color Toning, with or without CIECAM; b) More simply restore colors (saturation) to an image, in most cases maintaining the balance of colors; c) Use it to modify or refine the result of the Input profile to improve the colorimetry (calibration).

	===Where is it located in the toolchain pipeline?===		===Where is it located in the toolchain pipeline?===

Jdc: /* Three main uses (with or without CIECAM) */

2023-01-15T06:47:39Z

Three main uses (with or without CIECAM)

← Older revision		Revision as of 06:47, 15 January 2023
Line 240:		Line 240:
	* TRC: adjust gamma and slope to: a) modify the image rendering, which by default is g=2.4 s=12.92; b) raise the shadows and modify the lighter tones while preserving the colorimetry and the gamut.		* TRC: adjust gamma and slope to: a) modify the image rendering, which by default is g=2.4 s=12.92; b) raise the shadows and modify the lighter tones while preserving the colorimetry and the gamut.
	* Illuminant (white point): a) adjust the gamut of the Working profile to adapt it to the shooting conditions taking into account the colorimetry. If an image is taken at 4000K, in sRGB (which is D65), the gamut may not be suitable. The joint action of the Illuminant and CIECAM (symmetrical mode) allows you to ensure good chromatic adaptation; b) used in conjunction with the modification of the Primaries below.		* Illuminant (white point): a) adjust the gamut of the Working profile to adapt it to the shooting conditions taking into account the colorimetry. If an image is taken at 4000K, in sRGB (which is D65), the gamut may not be suitable. The joint action of the Illuminant and CIECAM (symmetrical mode) allows you to ensure good chromatic adaptation; b) used in conjunction with the modification of the Primaries below.
	* Primaries: this is where the notion of Abstract profiles comes into its own. Several possibilities are available: a) Use this module as a Channel Mixer in order to create special effects similar to Color Toning, with or without CIECAM; b) Use it to modify or refine the result of the Input profile to improve the colorimetry (calibration).		* Primaries: this is where the notion of Abstract profiles comes into its own. Several possibilities are available: a) Use this module as a Channel Mixer in order to create special effects similar to Color Toning, with or without CIECAM; b) more simply restore colors (saturation) to an image, in most cases maintaining the balance of colors; c) Use it to modify or refine the result of the Input profile to improve the colorimetry (calibration).

	===Where is it located in the toolchain pipeline?===		===Where is it located in the toolchain pipeline?===