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A rational methodology for estimating the luminous flux based upon color primaries from digital projection displays

Published

Author(s)

Edward F. Kelley, Karl Lang, Louis D. Silverstein, Michael H. Brill

Abstract

A standard methodology exists for estimating the flux from front projection displays by sampling the projected illuminance of a white source signal. With the advent and use of white projection primaries, a dramatic increase in flux can be achieved over the red, green, and blue primaries alone. However, saturated-color areas in an image are constrained to low flux levels relative to the display maximum, and hence bright colors cannot be rendered accurately. Because the display of color-accurate imagery does not generally use the white primary, there is a need for providing an equivalent flux measurement that will better describe a projectors color performance when rendering full color imagery. Background research and a method utilizing the source-signal color primaries is described.
Citation
NIST Interagency/Internal Report (NISTIR) - 6657
Report Number
6657

Keywords

color accuracy, color output, color perception, color rendering, display measurement, display metrology, ICDM Display Measurements Standard, IEC 61947-1, ISO 21118, light output, front projector, flux measurement, projection display, sampled luminous flux measurement, white primary, white subpixel

Citation

Kelley, E. , Lang, K. , Silverstein, L. and Brill, M. (2009), A rational methodology for estimating the luminous flux based upon color primaries from digital projection displays, NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=901354 (Accessed August 18, 2022)
Created January 1, 2009, Updated February 19, 2017