Date of Award

1-2011

Degree Name

Doctor of Philosophy

Department

Paper Engineering, Chemical Engineering and Imaging

First Advisor

Dr. Paul D. Fleming III

Abstract

With the advent of the modern digital technology, users can now capture an image and reproduce it between different media, such as display it on LCD monitor or tablet computer, print it on desktop printer or send it to a printing press. The challenge has been then to maintain the accuracy of image colors during this reproduction, which has led to the development of Color Management Systems. Using these systems, the color reproduction across-media will be accomplished using device ICC profiles that describe each device’s color characterization data in a standardized format based on International Color Consortium (ICC) specifications.

ICC profiles use a multidimensional Lookup Table (LUT) to map the device independent space to the device colorant space. This LUT is constructed based on an estimated characterization device model (using data fitting functions and a set of measurement data) to speed the transformation performance. The attempts of this research are to study all the factors that affect the accuracy of different device characterization models and to reveal some important fundamentals that influence the accuracy of constructing an equivalent device profile. Different digital devices were employed: a scanner, two different LCD monitors and an RGB printer. A plausible model for each device was provided, which also was used to smooth the measurement noise. An equivalent LUT was constructed based on that model and stored inside an equivalent ICC profile for each device using a customized C++ program and an open source library. Different evaluation tests were employed and some promising results were achieved.

Access Setting

Dissertation-Open Access

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