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Observer variability experiment using a four-primary display and its relationship with physiological factors

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There exist individual differences in color matching functions and the use of a single standard observer as a representative of a whole population often limits the accuracy of color reproduction, especially for narrowband stimuli. We conducted a paired comparison experiment for 58 color-normal people involving color difference judgments using four nearly metameric spectra pairs. The performance of observer functions: CIEPO06, Sarkar's observers, and the extended CIEPO06 incorporating peak-shift in L and M cones were investigated. Large observer variability was found in the obtained results, which ismuch larger than what CIEPO06 predicts. At least two different groups were found in the experimental results, which could be explained by eye-lens and macular pigment optical density variations. We estimated the individual cone fundamentals from another experiment where observers performed five color matching, and used them to predict the paired comparison results. They gave better, or at least comparable prediction to those of CIE 1964 observer and CIEPO06.
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Document Type: Research Article

Publication date: January 1, 2013

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  • CIC is the premier annual technical gathering for scientists, technologists, and engineers working in the areas of color science and systems, and their application to color imaging. Participants represent disciplines ranging from psychophysics, optical physics, image processing, color science to graphic arts, systems engineering, and hardware and software development. While a broad mix of professional interests is the hallmark of these conferences, the focus is color. CICs traditionally offer two days of short courses followed by three days of technical sessions that include three keynotes, an evening lecture, a vibrant interactive (poster) papers session, and workshops. An endearing symbol of the meeting is the Cactus Award, given each year to the author(s) of the best interactive paper; there are also Best Paper and Best Student Paper awards.

    Please note: for Purposes of its Digital Library content, IS&T defines Open Access as papers that will be downloadable in their entirety for free in perpetuity. Copyright restrictions on papers vary; see individual paper for details.

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