ISO/TS 18621-11:2019
Image quality evaluation methods for printed matter — Part 11: Colour gamut analysis
This document defines procedures to measure and compare the colour gamuts of RGB and CMYK printing processes.
It is not applicable to other printing processes.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Describing a colour gamut
4.1 General
4.2 Requirements of a gamut boundary description
4.3 Device gamut and usable gamut
4.4 Procedures for describing a colour gamut
4.4.1 General
4.4.2 Procedure for describing the colour gamut of a reproduction system based on its ICC profile
4.4.3 Procedure for describing the device gamut of a reproduction system based on its characterization model
4.4.4 Procedure for describing the device gamut of a reproduction system based on measurement of a printed gamut target
4.4.5 Procedure for describing the device gamut of a reproduction system based on characterization data
5 Computing the volume of a colour reproduction gamut
5.1 General
5.2 Volume of a single gamut
5.2.1 Volume calculation
5.2.2 Verifying the volume calculation
5.3 Volume of the intersection of two gamuts
5.3.1 General
5.3.2 Determining if a coordinate is inside or outside a gamut
6 Comparing colour gamuts
6.1 General
6.2 GCI
6.3 Gamut coverage
6.4 Out-of-gamut
7 Encoding and communicating a colour gamut description
Annex A (informative) Images for use in determining the gamut boundary of RGB and CMYK printing processes
Annex B (informative) Gamut volumes for a set of reference profiles
Annex C (informative) Errors in triangulation
Annex D (normative) Media-relative colour gamuts
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Describing a colour gamut
4.1 General
4.2 Requirements of a gamut boundary description
4.3 Device gamut and usable gamut
4.4 Procedures for describing a colour gamut
4.4.1 General
4.4.2 Procedure for describing the colour gamut of a reproduction system based on its ICC profile
4.4.3 Procedure for describing the device gamut of a reproduction system based on its characterization model
4.4.4 Procedure for describing the device gamut of a reproduction system based on measurement of a printed gamut target
4.4.5 Procedure for describing the device gamut of a reproduction system based on characterization data
5 Computing the volume of a colour reproduction gamut
5.1 General
5.2 Volume of a single gamut
5.2.1 Volume calculation
5.2.2 Verifying the volume calculation
5.3 Volume of the intersection of two gamuts
5.3.1 General
5.3.2 Determining if a coordinate is inside or outside a gamut
6 Comparing colour gamuts
6.1 General
6.2 GCI
6.3 Gamut coverage
6.4 Out-of-gamut
7 Encoding and communicating a colour gamut description
Annex A (informative) Images for use in determining the gamut boundary of RGB and CMYK printing processes
Annex B (informative) Gamut volumes for a set of reference profiles
Annex C (informative) Errors in triangulation
Annex D (normative) Media-relative colour gamuts
Bibliography