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Why Do Measured Values Taken with Different Color Instruments Usually Differ? An Anthology of Color Measurement Errors

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A paper presented by the NPIRI Color Measurement Task Force at the 1993 annual TAGA meeting reports that colorimetric measurements made with spectrophotometers manufactured by the same company and with the same geometry can differ by 0.7 to 1.7 CLab ΔE and that values from instruments made by different manufacturers with the same geometry can differ by 1.5 to 3.0 ΔE. The author of this poster has published extensively on the physical mechanisms that can cause such measurement differences. This poster paper illustrates the nature of these mechanisms along with other error producing phenomena such as wavelength error, thermal and light exposure color effects, fluorescence, and transient color effects produced by flash sources.
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Document Type: Research Article

Publication date: January 1, 1994

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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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