Renzo Shamey
Bio
Prof. Shamey served as the President of Inter-Society Color Council (USA, 2018-2022). He received the Fellowship of the Society of Dyers and Colourists and a Chartered Colourist (CCol) in the UK in 2010. He was selected a University Faculty Scholar at NCSU in 2014. He is an honorary professor at Tianjin Polytechnic University (China). Prof. Shamey is the co-author of several books and book chapters, most notably, “Modeling, Simulation and Control of the Dyeing Process”, and “Pioneers of Color Science” and is the editor of the 2nd edition of the “Encyclopedia of Color Science and Technology”. During his graduate studies Renzo Shamey was elected the Academic Secretary of the United Kingdom National Postgraduate Committee (NPC) as well as the President of the Postgraduate Representative Council (PGRC) of Leeds University between 1995-1998. He was a state champion in freestyle wrestling for several years in his school years. He enjoys playing badminton, traveling, and learning new languages. Fifteen PhD and five Masters projects have been completed in these areas. Three PhD projects are currently underway on perception & modelling of texture, and characterization of color of complex patterns using digital cameras. Other projects involve assessment of color difference formulae and development of visual datasets. Several PhD projects have been completed in this field. The current work focuses on the development of deep learning approaches and comprehensive AI systems to troubleshoot dyeing/printing problems. Other areas involve the examination of the effect of various parameters in real time on individual dyes in a dye admixture. Several PhD projects have been completed in these fields. Works of interest include exploring novel techniques to dye polyolefins, as well as the study of photodegradation of fibers as a result of inclusion of dyes in fiber. Postdocs, and Visiting Scholars Undergraduate Research ProjectsResearch
Research Interests
Organizations
Teaching
Additional Information
Current PhD Students
2023, PhD, Chair:Shamey
Modelling Texture
2023, PhD, Chair, Shamey
Effect of Background on Color Difference of Multicolored Objects
2023, PhD, Chairs, Shamey, Seyam
An image-based diagnosing system for textile coloration defects -Textile Vision
Omni Vision, 2023, PhD, Chair: Shamey
Quality Control of Multicolored Objects Using Imaging Systems
Data Analytics, TransUnion, 2020, PhD, Chairs, Chapman- Shamey
Inkjet Printing of Textiles
Organic Dyes and Pigments, 2020, PhD, Chair, Shamey
Development of a diagnostic expert system for the coloration of blend fibers
202x, PhD, Chair, Shamey
Development of a diagnostic expert system for the coloration of polyamide and acrylic fibers
Director of Textile Research & Testing, 2017, PhD, Chairs: Hauser-Shamey
Colorimetric characteristics of cationized cotton dyed with anionic colorants
Subject matter expert, color, Apple, 2017, PhD, Chair, Shamey
Assessment of Texture
2018, MS, Chair, Shamey
Dermatological Application of Colorants
2018, MS, Chair, Shamey
Assessing the role of glare in colorimetric use of cameras
Camera Algorithm Engineer, Apple, USA, 2015, Chair: Shamey
Development of an instrumental technique for quality control of complex colored patterns.
Johnston Printing, Thailand, 2014, Chair: Shamey
Development of a diagnostic expert system for coloration of protein fibers.
Reiko, USA, 2013, PhD, Chair: Shamey
Factors Affecting the Perception and Measurement of Optically Brightened White Textiles.
Lecturer, Istanbul Technical University, 2012, PhD, Chairs: Shamey- Dayioglu
Development of a diagnostic expert system for inkjet printing of cotton substrates.
Qualcom, USA, 2012, PhD, Co-Chairs: Shamey-Hinks
Development of Instrumental Techniques for Color Assessment of Camouflage Patterns.
2011, PhD, Co-Chairs: Shamey-Hinks
Perception of Blackness and the Formulation of a Blackness Index
Research Associate, Cornell University, 2011, PhD at Istanbul Technical University, Co-Chairs: Shamey-Dayioglu
Optimization & Study of Exhaustion Profiles in the Dyeing of Cotton.
Professor & Dean, Jiangnan University, Wuxi, China, 2009, PhD, Co-Chairs: Hinks-Shamey
The Chemistry and Perception of Fluorescent White Textile Materials
Research scientist, Korea, 2009, PhD, Co-Chairs: Shamey-Joines Development of a Diagnostic Expert System for the Dyeing of Polyester Substrates
Assistant Professor, Chile, 2009, PhD, Co-Chairs: Shamey-Hinks,
Evaluation of Variability in Visual Assessment of Small Color Differences
Textile Research & Innovation Center, Pakistan, 2008, MS, Chair: Shamey
Development of a visual dataset around a CIE high chroma blue color center.
Associate Professor, Korea, 2007, MS, Co-Chairs: Shamey-Jasper
Assessment of Metrics in Color Spaces
Postdoctoral Research Fellow, UK, 2007, PhD, Co-Chairs: Christie-Shamey
The Molecular Design, Synthesis and Application of Photochromic Dyes on Protein Substrates
Assistant Director, defense research labs, India, 2006, PhD, Co-Chairs: Shamey-Christie
An Investigation of the Photodegradation of a Nylon Support Net used in Exhibition of Historic Textiles
Sales manager, Canada, 2005, MPhil, Co-Chairs: Wardman-Shamey
An Investigation on the Characteristics and Role of Surface Deposits Formed on the Wool Fiber During the Dyeing Process with Metal-Complex Dyes and Minimising Their Formation.
Process Engineer, UK, 2005, PhD, Co-Chairs: Shamey-Mather
Coloration of Polypropylene: Prospects and Challenges
Professor, Tianjin Polytechnic University, China, 2004, PhD, Co-chairs: Shamey-Wardman
Modelling of the Mass Transfer and Fluid Flow in Package Dyeing Machines
Rector, National Textile University, Pakistan, 2004, PhD, Co-Chairs: Shamey-Wardman
A Knowledge Based Expert System for the Dyeing of Cotton.
2023, The effect of water hardness on dye build-up
2023, The effect of water hardness on dyeing polyester
2022, Calibration dyeing of polyester with Terasil dyes
2017, The effect of LEDs on light fastness of conventional and cationic cotton dyed with reactive dyes
2017, Assessment of the degree of blackness of commercial colorants
2017, The effect of fabric color on perceived facial attractiveness of Caucasian and Chinese
2014, Threshold determination of “simultaneous contrast” and “spreading”
2013, Development of a perceptually geometric gray scale on polyester woven substrate
2013, Effect of certain chemical and mechanical treatments on colorimetric attributes of polyester substrate dyed with disperse dyes
2011, Brunescence and Its Influence on Assessment of Small Color Differences.
2011, Development of a Sample Set around a CIE High Chroma Blue Color Center
2011, Development of a ‘gray’ hue circle.
2010, Development of a fabric based gray scale for assessment of color change
2007, Determination of unique hue based on Munsell chips
2007, Establishing a translucency index for textiles using translucent compression garments
2006, Determining the Effect of Relative Humidity, Fabric Structure, and Finishing on Colorimetric Properties of Direct Dyed Cotton Fabrics
2005, Assessment of large color differences using DigiEye and Datacolor spectrophotometers
Area(s) of Expertise
Color Science
Dyeing and Finishing
Polymer Science
Polymer/Fiber/Textile Processing
Publications
- Cross-ethnic comparison of the effect of garment color on male perception of female attractiveness , COLOR RESEARCH AND APPLICATION (2023)
- A novel image retrieval strategy based on transfer learning and hand-crafted features for wool fabric , EXPERT SYSTEMS WITH APPLICATIONS (2022)
- Azurite blue in the Qing dynasty , COLOR RESEARCH AND APPLICATION (2021)
- The effect of luminance on the perception of small color differences , COLOR RESEARCH AND APPLICATION (2021)
- X-ray photoelectron spectroscopy study on the photodegradation of copolyester model compounds , JOURNAL OF APPLIED POLYMER SCIENCE (2021)
- Accurate colorimetric images using LEDs , JOURNAL OF ELECTRONIC IMAGING (2020)
- Influence of UV stabilizers on the weathering of PETG and PCTT films , JOURNAL OF APPLIED POLYMER SCIENCE (2019)
- Photodegradation of copolyester films: A mechanistic study , Journal of Applied Polymer Science (2019)
- Pretreatment effects on pigment-based textile inkjet printing - colour gamut and crockfastness properties , COLORATION TECHNOLOGY (2019)
- Unique hue stimulus selection using Munsell color chips under different chroma levels and illumination conditions , JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION (2019)
Grants
The goal of the proposed project is to employ the fundamental principles of color science and coloration technology to characterize the measured color of specific Nike products, made from polyesters substrates, with respect to the quality of water used in the process. The main objective is to provide a repeatable approach to matching reference target colors within a production setting and among different sites and understanding the role of water hardness on the outcome of the process. This work is expected to improve the understanding of process parameters and in turn enhance the agreement between predicted and measured colors of products as a function of processing parameters. It will also improve the agreement among results reported by various suppliers.
Booth use - Color Science Laboratory
The present proposal has the objective to develop, validate and implement an imaging system for the color quality control and assessment of Operation Enduring Freedom (OCP) camouflage substrates. This work comprises the following main components: 1) Obtaining a statistically valid set of pass and fail responses for a large set of camouflage substrates from a group of expert color assessors that repeat their judgments on multiple trials which will be used to train the system. 2) Developing a numerical algorithm based on an imaging technique that utilizes the above visual criteria to establish instrumental acceptability boundaries. 3) Comparison of the performance of the numerical models used in the imaging techniques against visual judgments for a new set of test samples. 4) Prediction of P/F judgments for a variety of substrates. In order to improve the effectiveness of the proposed technique, different types of material (woven, knitted, nonwoven, & different blends) that are commonly utilized in the production of camouflage material in different sectors, should be made available to be visually rated and to train the system.
The thrust of this 1-year project is to examine processes and mechanisms leading to improvements in the wet and dry crock fastness on cotton, while maintaining the color gamut. In this regard, fundamental studies in ink/substrate interactions will be undertaken using instruments in the NCSU Surface Science Laboratory. These studies will involve the 1) comparison of Lubrizol (LZ) Gen 1/Gen2 and rotary screen pigment inks on cotton and 2) evaluation of LZ binder design, ink formulation and pretreatment using SPECS XPS, TOF-SIMS, and FIB-SEM methods.
The objectives of this proposal are two-fold. The first is to determine a commercially feasible way to prevent excess cationic sites on cationized cotton. The second objective is to develop a mathematical model that will allow the optimal cationization level to be calculated for a specific dye formula.
The objective of this investigation is to characterize the Sponsor's pre-treatment process by 1) performing an assessment and comparative analysis of the interaction between the pre-treatment and various commercially available inks on textiles and 2)characterizing the color shift that sometimes occurs with dark colored textiles following pre-treatment application.
The proposal is aimed at developing and deploying a rapid, accurate, and repeatable digital color assessment technology and image processing solutions to analyze color attributes and control quality of universal camouflage print patterns. Phase I of this project, funded by the US Army Soldier Equipment Division, aims to develop a working protocol for the instrumental assessment of Military Textiles that improves the consistency of quality control measures as well as communication throughout the supply chain and supports industrial applications and decision making process. This Phase II proposal aims to extend the work initiated during Phase I activity and deliver a reproducible instrumental methodology, verified through multiple site assessments and combine the technology with statistically valid perceptual assessments of the camouflage fabrics.
The US Army Solider Equipment division requires a rapid, accurate, repeatable and reproducible instrumental assessment protocol for the Universal camouflage print fabric. This proposal aims to deliver an instrumental methodology that can be implemented into the camouflage fabric supply chain rapidly and at reasonable cost.
The primary goal of the proposed research is to develop an accurate and precise integrated color control system that can be easily implemented throughout the US textile industrial manufacturing complex, from product designer through to merchandiser, dyer, retailer and consumer. Fundamental research in the following areas must be addressed to achieve this goal: 1) Develop illuminant data that correlate with the color rendering of lighting used in standard light booths (especially daylight simulators) and lighting used in retail stores, 2) Develop an accurate color inconstancy model and integrate it into color formulation software, 3) Establish the minimum possible error in color difference assessment via a well-controlled, statistically valid color difference experiment that is replicated by at least 3 independent observe panels from different regions of the world (U.S., Asia and Europe).
The current grant application is submitted by North Carolina State University and Oak Ridge National Laboratory. The proposal is aimed at developing and deploying an extensible optical reader technology and image processing solutions to identifying and analyze textile tags for the US Textile and Apparel Industry as well as US Customs through integration of a robust reader system into a design that supports commercial and industrial applications.