Luminance Requirements and Color Appearances of Colored Displays in Turbid Water. I. Dark Ambient Viewing Environments.
Abstract
Dark-adapted observers viewed six narrow-band wavelength displays and a white display through two artificially turbid media whose physical and optical properties simulated natural ocean and harbor waters. The source display was a 3-digit fiber optic display optically modified in wavelength by appropriate filters and in size by a reduction lens. The luminance of the display was a continuous variable under the control of the observer. Display luminance was gradually increased by the rotation of a calibrated neutral density wedge. Ten observers made legibility and color appearance judgments in response to the experimental variations in display size and wavelength, and water turbidity. Observers made judgments about the legibility of the display based on operationally defined changes in the clarity of the fiber optic display, and judgments about color appearance of the display using a forced-choice, color-naming technique and a restricted set of color names: Blue, Green, Yellow, Red and White. Conclusions about display luminance requirements and color appearances apply to the case of dark-adapted observers in dark, turbid waters.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1978
- Accession Number
- ADA068399
Entities
People
- Jerome Williams
- Robert A. Glass
- W. S. Vaughan Jr.