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ICC DevCon 2020: Program

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Introduction to ICC DevCon 2020

William Li
Kodak

Color Management in the 21st Century

Danny Rich
Sun Chemical (a division of Dainippon Ink and Printing)

Abstract
The success of the ICC system of color management has prompted the entire world of colored goods manufacturing to rethink their approach to managing the color of their products. This talk will examine the technologies that must be adapted by the ICC to provide the same level of success that it has provided to graphic reproduction.

Older industries, such as textiles and coatings were based on different kinds of instruments that were better suited to materials with inherently more surface variability and larger test areas. Why did graphic reproduction choose to depart from the trends of the already fully engaged measurement and control systems in textile manufacturing and the production of decorative coatings? Why did the ICC choose a non-standard phase of daylight and the standard observer function which has been known to be defective since the 1940s? What new technologies have been developed in the past few decades that is changing the way color technologies is or should be practiced? Finally, the talk will look at the latest developments in documentary standards from the CIE and the ISO that are prompting changes to the way that commercial colorimetry will be practiced in the next few decades.

Bio
Dr. Rich obtained his Bachelors degree in Physics from the University of Idaho in 1973. He received a Masters degree in Physics in 1977 from Virginia Polytechnic Institue and State University in Blacksburg, Virginia. His research there involved laser optics and its application to light scattering experiments. In 1980, he completed his PhD dissertation entitled, "The Perception of Moderate Color Differences in Surface-Color Space".

In 1998 Dr. Rich joined the Sun Chemical Corporation. His current responsibilities include visual and instrumental tolerancing, corporation wide instrument reproducibility and color management strategies and the technology behind color management for packaging printing, optical calibration and lighting engineering for Sun Chemical world-wide. He holds 14 US patents, 11 World patents and 21 applications.

Has been awarded the Nickerson Service award from the Inter-Society Color Council in 1999, the National Printing Ink Manufacturers award for Technical Achievement in 2008, a Thomas Alva Edison award for innovation by the Research Council of New Jersey in 2008, the Robert F Reed Medal from the Printing Industries of America in 2013, the Mattiello Memorial award from the American Coatings Association in 2015, the Godlove Award from the Inter-Society Color Council in 2019 and the Presidents Award from the Flexographic Technical Association in 2019 .

Dr. Rich has published on all aspects of Color Science and Engineering, including visual perception, instrumentation, and mathematical modelling.

Spectral reproduction

Tanzima Habib
NTNU

Colour reproduction based on trichromacy causes loss of spectral information and leads to metameric matches that may fail to match under varying illumination or observer colour matching functions. Such colour reproduction systems pose a limitation to colour critical work eg. brand colour.Therefore, it is essential to include spectral reproduction workflows to address such limitations. In this talk some spectral reproduction use cases and workflows will be explored with an aim to incorporate them into colour management.

Bio
Tanzima Habib is a PhD student at NTNU, currently working on appearance reproduction workflow for spectral and 2.5D printing.She has a diverse background in software engineering and geoinformatics, and her interest lies primarily in the domain of colour management and image processing.

A new colour management paradigm

William Li
Kodak

Colour appearance

Ming Ronnier Luo
Hangzhou University

Abstract
This talk updates some new developments in colour appearance modelling. The basic theory of colour appearance model will be first introduced. The new developments will cover the uniform colour space and colour appearance for HDR applications, the degree of incomplete chromatic adaptation, the extension to consider colour appearance changes due to different coloured background, and the development of 2-dimensional colour appearance scales.

Bio
Ming Ronnier Luo is a Chair Professor at the College of Optical Science and Engineering, Zhejiang University (China). He is also a Visiting Professor of Colour Science and Imaging at University of Leeds (UK). He has published over 650 peer reviewed papers (Inc. 220 Journal and 430 conference papers). He is a Fellow of the Society for Imaging Science and Technology (IS&T), and the Society of Dyers and Colourists (SDC). He was an Ex-Vice-President and Ex-Director of Division 1 (Colour and Vision) of International Commission on Illumination (CIE). He has been an active member of CIE as Technical Chair and members in various Technical Committees. He has received numerous awards, including the Judd Award in 2017 from AIC, and of the Newton Award in 2020 from the Colour Group of Great Britain for his contribution in colour science.

3D printing spatially varying color and translucency

Philipp Urban
Frauenhofer Institute

Abstract
I present an efficient and scalable pipeline for fabricating full-colored objects with spatially-varying translucency from practical and accessible input data via multi-material 3D printing. Observing that the costs associated with BSSRDF measurement and processing are high, the range of 3D printable BSSRDFs are severely limited, and that the human visual system relies only on simple high-level cues to perceive translucency, a method based on reproducing perceptual translucency cues is proposed. The input to the pipeline is an RGBA signal defined on the surface of an object, making the approach accessible and practical for designers. I describe a framework for extending standard color management and profiling to combined color and translucency management using a gamut correspondence strategy we call opaque relative processing. Furthermore, I describe an efficient streaming method to compute voxel-level material arrangements, achieving both realistic reproduction of measured translucent materials and artistic effects involving multiple fully or partially transparent geometries.

Bio
Philipp Urban received his MS in mathematics from the University of Hamburg, Germany (1999), and PhD from Hamburg University of Technology, Germany (2005). From 2006 to 2008, he was a visiting scientist at Munsell Color Science Laboratory, Center for Imaging Science, Rochester Institute of Technology, USA, after which he headed the Color Research Group at the Institute of Printing Science and Technology, Technische Universitšt Darmstadt, Germany. Since 2013, Urban has been the head of the Competence Center 3D Printing Technology at the Fraunhofer Institute for Computer Graphics Research IGD in Darmstadt and works with his team on the graphical 3D printer driver ?Cuttlefish?. He is an adjunct professor in the Norwegian Colour and Visual Computing Laboratory, Norwegian University of Science and Technology (NTNU) in Norway. His research interests include 3D printing, spectral imaging, image quality, and material appearance reproduction.

Encoding BRDF in an ICC profile

Tanzima Habib
NTNU

Abstract
Until now colour management is based on colorimetry alone without considering rendering of appearance. For a given image now it is possible to have a colorimetric output at another illumination and viewing geometry by encoding BRDF models into an ICC profile. In this talk we introduce how an appearance rendering workflow can be achieved using iccMAX.

Total appearance capture and reproduction

James Vogh
X-Rite

Colour on the web and broadcast

Chris Lilley
W3C

Printing beyond 4-colour process: requirements for n-colour reproduction

William Li
Kodak

N-colour implementation using iccMAX at Onyx Graphics

Max Derhak
Onyx Graphics

Workshop

Features of iccMAX

Max Derhak
Onyx Graphics

Profile connection and PCS operations

Max Derhak
Onyx Graphics

iccMAX implementation at Barbieri Electronic

Michele Conni
Barbieri Electronic

Working with RefIccMAX

Max Derhak
Onyx Graphics

Using iccXML to create and get information about profiles

Max Derhak
Onyx Graphics

Calculator Element programming

Tanzima Habib
NTNU

Interoperability conformance specifications

Phil Green
NTNU

Using ICS workflow profiles to better understand iccMAX

Max Derhak
Onyx Graphics