| Autor: |
Kinkade, Robert G., Snyder, Harry L., Greening, Charles P. |
| Zdroj: |
Human Factors: The Journal of the Human Factors and Ergonomics Society; June 1963, Vol. 5 Issue: 3 p335-337, 3p |
| Abstrakt: |
Twelve observers were asked to estimate the realism of projected star fields. The results clearly indicate that maximum realism is obtained from a star field which has the following characteristics: (1) sky (background) luminance is quite low, preferably as in the outer space sky of 10-5candelas per square meter; (2) individual stars are small (1 minute of visual angle), appearing as point sources; and, (3) simulated stars are relatively bright, casting an illumination of about 10-8ft-candles upon the eye of the observer (approximately first to third magnitude, average). One important overall characteristic of these conditions is that of virtually infinite contrast between a point source and its background, a true star characteristic as pointed out by Middleton. Any departures from these conditions will affect the apparent realism of the display, as shown by the experimental results. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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