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Comparative Study
. 1999 May;12(2):50-9.
doi: 10.1007/BF03168843.

Image quality degradation by light scattering in display devices

M J Flynn  1 , A Badano
Affiliations
Comparative Study

Image quality degradation by light scattering in display devices

M J Flynn et al. J Digit Imaging. 1999 May.

Abstract

Veiling glare and ambient light reflection can significantly degrade the quality of an image on a display device. Veiling glare is primarily associated with the diffuse spread of image signal caused by multiple light scattering in the emissive structure of the device. The glare ratio associated with a test image with a 1-cm-diameter black spot is reported as 555 for film, 89 for a monochrome monitor, and 25 for a color monitor. Diffuse light reflection results from ambient light entering the display surface and returning at random emission angles. The diffuse reflection coefficient (luminance/illuminance, 1/sr) is reported as 0.026 for film, 0.058 for a monochrome monitor, and 0.025 for a color monitor with an antireflective surface coating. Both processes increase the luminance in black regions and cause contrast reduction. Specular reflections interfere with detail in the displayed scene. The specular reflection coefficient (luminance/luminance) is reported as 0.011 for film, 0.041 for a monochrome monitor, and 0.021 for a color monitor with an antireflective coating.

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References

    1. Zeman HD, Hughes EB, Otis JN, et al. Veiling glare of a linear multichannel Si(li) detector. Proc SPIE. 1985;535:214–221.
    1. Swank RK. Calculation of modulation transfer functions of x-ray fluorescent screens. Appl Optic. 1973;12:1865–1870. doi: 10.1364/AO.12.001865. - DOI - PubMed
    1. Caruthers E. Monte Carlo studies of image spread by x-ray image intensifiers. Proc SPIE. 1985;535:140–147.
    1. Matsuda S, Nitoh T. Hare as applied to photographic lenses. Appl Optic. 1972;11:1850–1856. doi: 10.1364/AO.11.001850. - DOI - PubMed
    1. Beckman C, Nilsson O, Paulsson L-E. Intraocular light scattering in vision, artistic painting, and photography. Appl Optic. 1994;33:4749–4753. doi: 10.1364/AO.33.004749. - DOI - PubMed

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