Intro; 2018 9th China Academic Conference on Printing and Packaging and Conference of Scientific Research Innovation; Conference Executive Committee; Conference Academic Committee; Preface; Contents; Testing Performance of Whiteness Formulas; Abstract; 1 1 Introduction; 2 2 Experiment Setup; 3 3 Analysis and Discussion; 3.1 Testing Different Whiteness Formulas; 3.2 W_{CIE, CAT02} with Optimized Adaptation Degree; 4 4 Conclusions; References; Spectral Power Distributions with High Gamut-based Metric Values; Abstract; 1 1 Introduction; 2 2 Classical Gamut-based Measures; 2.1 Gamut Area Index

2.2 Qg2.3 Rg; 2.4 Gamut Volume Index; 3 3 SPD Dataset; 4 4 Results and Discussion; 5 5 Conclusions; Acknowledgement; References; Effect of Backgrounds with Different Lightness on the Color Appearance of Printed Samples; Abstract; 1 1 Introduction; 2 2 Experimental; 2.1 Samples and Illumination; 2.2 Experimental Procedure; 3 3 Results and Discussions; 3.1 Observer Variability; 3.2 Visual Color Difference; 3.3 Performance of CAM16 and CAM16-UCS; 4 4 Conclusions; Acknowledgements; References; Reviews on Observer Metamerism and Individual Color Vision Variability; Abstract; 1 1 Introduction

2 2 Physiological Attributions2.1 Lens and Variable Factors; 2.2 Macular and Variable Factors; 2.3 Photopigment and Variable Factors; 3 3 Quantification of Observer Metamerism; 3.1 Standard Observer; 3.2 Individual Observer; 3.3 Categorical Observer; 4 4 Conclusions; Acknowledgments; References; Study on the Constancy of Color Vision; Abstract; 1 1 Introduction; 2 2 Color Visual Constancy Experiment; 2.1 Same Color Constancy Experiment in Different Light Sources; 2.2 Constancy Experiment of Different Colors Under Different Illuminants; 2.3 Instances of Color Constancy in Daily Life

3 3 Analysis of Experiment Results4 4 Conclusions; Acknowledgements; References; Research on Digital Printing Color Prediction Model Based on PSO-BP Neural Network; Abstract; 1 1 Introduction; 2 2 PSO-BP Neural Network Principle; 2.1 BP Neural Network; 2.2 PSO Algorithm; 2.3 PSO Optimization BP Neural Network; 3 3 The Construction and Realization of Prediction Model; 3.1 PSO-BP Model Establishment; 3.2 Layers Partitioning Based on Lightness; 3.3 Experimental Design; 3.4 Prediction Results and Analysis; 4 4 Conclusion; Acknowledgements; References

Research on the Atmosphere and Emotionality of Apparel Stores Under LED Lighting EnvironmentAbstract; 1 1 Introduction; 2 2 Psychophysics Experiment; 2.1 Observer Selection; 2.2 Experimental Environment and Method; 3 3 Results and Analysis of This Experiment; 3.1 Observer Reliability; 3.2 Principal Component Analysis; 3.3 The Relationship Between Brightness, Warmth and Cosiness; 4 4 Conclusions; Acknowledgements; References; Research on the Antagonism Mechanism of Human Color Vision; Abstract; 1 1 Introduction; 2 2 Antagonism Mechanism Simulation Algorithms