| Title |
A Study on Visual Acuity and Contrast Perception under Simulated Fog Conditions with Liquid Crystal Window |
| Authors |
Seok-Jun Yang ; Eun-Jung Choi |
| DOI |
http://dx.doi.org/10.5207/JIEIE.2016.30.5.010 |
| Keywords |
Contrast Perception ; Fog ; Liquid Crystal Window ; Transmittance ; Visual Acuity |
| Abstract |
We have investigated the changes of visual acuity and contrast perception under various fog conditions simulated with the liquid crystal window. The optical property of the liquid crystal window mainly depended on the light scattering along with fog, but the behavior of the spectral transmittance was somewhat different from that of fog. As the transmittance of simulated for conditions with the liquid crystal window decreases, the values of visual acuity decreased linearly, while the values of minimum contrast needed to perceive objects increased rapidly. We deduced the empirical fitting curves to be able to represent the relationship between visual acuity and the transmittance of simulated fog, and the one between contrast perception and the transmittance of simulated fog, respectively. These results may be used as an useful information on the limits of the visual function in the researches related to visibility in fog. |