Measurement of equivalent luminance in mesopic vision
نویسندگان
چکیده
منابع مشابه
Mesopic luminance assessed with minimum motion photometry.
We measured the relative contribution of rods and cones to luminance across a range of photopic, mesopic, and scotopic adaptation levels and at various retinal eccentricities. We isolated the luminance channel by setting motion-based luminance nulls (minimum motion photometry) using annular stimuli. Luminance nulls between differently colored stimuli require equality in a weighted sum of rod an...
متن کاملRod and Cone Contributions to Mesopic Vision
Mesopic light levels span approximately 3-4 log units in the natural viewing environment, including many indoor lighting settings, and most twilight or nighttime outdoor and traffic lighting environments. Traditional studies of the contribution of the different photoreceptor types to mesopic vision have been hampered by an inability to modulate the rod or cone systems independently. Our approac...
متن کاملVision under mesopic and scotopic illumination
Evidence has accumulated that rod activation under mesopic and scotopic light levels alters visual perception and performance. Here we review the most recent developments in the measurement of rod and cone contributions to mesopic color perception and temporal processing, with a focus on data measured using a four-primary photostimulator method that independently controls rod and cone excitatio...
متن کاملA Color Appearance Model Applicable in Mesopic Vision
We propose a color vision model that can be used to predict color appearance in mesopic vision as well as photopic and scotopic vision. It is based on a two-stage model which consists of the cone and opponent stages and it assumes rod intrusion at the opponent stage. The model has the following features to describe the color appearance in mesopic vision. First, it includes a gradual and nonline...
متن کاملColour vision and visual performance in the mesopic range of vision
The aim of this work is to predict mesopic detection contrast thresholds for spectral increments on a fixed uniform mesopic background. A compound contrast-type quantity C including achromatic and chromatic terms is defined. The detection threshold is characterized by C=1. From this criterion, a spectral non-additivity formula (NA) is derived for a mesopic luminance difference type quantity. Ac...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of the Illuminating Engineering Institute of Japan
سال: 1989
ISSN: 0019-2341,1349-838X,2185-1506
DOI: 10.2150/jieij1980.73.appendix_137