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Wider is better but sharper is not: optimizing the image of camera-monitor systems.
- Source :
- Ergonomics; Jul2022, Vol. 65 Issue 7, p899-914, 16p
- Publication Year :
- 2022
-
Abstract
- The replacement of rear-view mirrors with camera-monitor systems introduces new opportunities for design, such as altering the image quality and the rearward field-of-view. We investigated how the image quality and field-of-view might affect the distance and time-to-contact estimation of other vehicles. Eighty-six subjects estimated either their egocentric distance to a stationary vehicle (Experiment I) or the time-to-contact to an approaching vehicle (Experiment II). Throughout the experiments, the pixel density and either the field-of-view or the viewing condition varied. A larger field-of-view increased distance estimation accuracy and confidence. Reduced pixel density led to larger estimates. In contrast, reduced pixel density and simulated dirt shortened time-to-contact estimates. This is compatible with a safety strategy applied under conditions of impaired vision. Moreover, a limited benefit was observed for higher pixel densities. Therefore, camera-monitor systems with large field-of-view and a pixel density of around 300 ppi could ensure accurate TTC and distance estimation. Practitioner summary: A camera's field-of-view and image quality are important parameters for camera-monitor systems. In two experiments, we investigated the effects of these two parameters on rearward distance and time-to-contact estimation. Whereas a larger field-of-view improved distance estimation accuracy, increasing the pixel density had a limited effect in the estimation of time-to-contact. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00140139
- Volume :
- 65
- Issue :
- 7
- Database :
- Complementary Index
- Journal :
- Ergonomics
- Publication Type :
- Academic Journal
- Accession number :
- 157747913
- Full Text :
- https://doi.org/10.1080/00140139.2021.2003871