Principles of Colour Appearance and Measurement: Visual Measurement of Colour, Colour Comparison and Management


Principles of Colour Appearance and Measurement Volume 2: Visual Measurement of Colour, Colour Comparison and Management
by Asim Kumar Roy Choudhury

Principles of Colour and Appearance Measurement

Table of Contents
Contributor contact details
Woodhead Publishing Series in Textiles
1: Visual measures of colour
1.1 Introduction
1.2 Means of colour communication
1.3 Colour order systems
1.4 Colourant mixture systems
1.5 Colour mixture systems
1.6 Colour appearance systems
1.7 Advantages and limitations of colour order systems
1.8 Conclusion
2: Popular colour order systems
2.1 Introduction
2.2 Munsell system
2.3 Natural Colour System (NCS)
2.4 Ostwald system
2.5 OSA-UCS system
2.6 Coloroid system
2.7 Comparison and interrelation of various systems
2.8 Accuracy of colour order systems
2.9 Computer-based colour systems
2.10 Future trends
2.11 Conclusion
3: Colour-difference assessment
3.1 Introduction
3.2 Parameters affecting visual evaluation
3.3 Perceptibility and acceptability
3.4 Visual methods of assessment
3.5 Colour tolerance
3.6 Colour discrimination data
3.7 Ellipses and ellipsoids of colour discrimination
3.8 Derivation of colour-difference formulae
3.9 Existing colour-difference formulae
3.10 Colour tolerance in various systems
3.11 Evaluation of the colour-difference formulae
3.12 Future trends
3.13 Conclusion
4: Instrumental colourant formulation
4.1 Introduction
4.2 Defining colour matching
4.3 Laws of mixing
4.4 Kubelka and Munk (K-M) theory
4.5 Limitations of K-M theory
4.6 Additive functions
4.7 Single-constant theory
4.8 Two-constant theory
4.9 Beyond K-M theory
4.10 Instrumental colourant formulation
4.11 Algorithm for single-constant theory
4.12 Algorithm for two-constant theory
4.13 Reformulation program
4.14 Computer programming
4.15 Spectral colour matching
4.16 Colour matching of blends
4.17 Principal component analysis (PCA)
4.18 Advantages and limitations of instrumental colourant formulation
4.19 Causes of low accuracy in textile dyeing
4.20 Causes of low accuracy in paints and plastics
4.21 Match prediction using fluorescent colourants
4.22 Conclusion
5: Metamerism and shade sorting
5.1 Introduction
5.2 Defining metamerism
5.3 Types of metamerism
5.4 Numerical methods of generating metamers
5.5 Metamerism and object-colour solid
5.6 Wavelengths of intersections
5.7 Control of metamerism
5.8 Visual measurement of metamerism
5.9 Metamerism indices
5.10 Illuminant metamerism potentiality (IMP)
5.11 Spectral decomposition by Matrix R
5.12 Colour constancy and metamerism
5.13 Performance of metameric indices
5.14 Instrumental shade sorting
5.15 Conclusion
6: Chromatic adaptation and colour constancy
6.1 Introduction
6.2 Adaptation
6.3 Physiological basis of chromatic adaptation
6.4 Measurement methods
6.5 Chromatic adaptation theory
6.6 Non-linear models
6.7 Nayatani’s model
6.8 Hunt’s models for chromatic adaptation
6.9 CIECAM97s model
6.10 CIECAM02 model
6.11 Evaluation of the models
6.12 Effect of changing illuminant on colour appearance
6.13 Colour constancy
6.14 Visual assessment of colour constancy
6.15 Colour constancy models
6.16 Conclusion and future trends
7: Digital colour reproduction
7.1 Introduction
7.2 Digital imaging fundamentals
7.3 Colour reproduction
7.4 Additive and subtractive processes
7.5 Colour changes in reproduction processes and colour correction systems
7.6 Image-capturing devices
7.7 Colour monitors
7.8 Colour management
7.9 Managing workflow for consistent colour quality
7.10 Measurement and management of special colours
7.11 Conclusion

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