[en] Mesopic lighting conditions can be physiologically defined as the light levels where both cones and rods of the retina participate in visual perception. At night, the luminance of artificially lighted outdoor environments falls typically within that range. This calls for a photometric model that describes the mesopic spectral sensitivity of the eye at various adaptation levels. However, mesopic issues are not limited to spectral sensitivity changes. The interactions of signals from cones and rods lead to other variations in the characteristics of vision that a computational model of the retina can describe. We develop such a model in order to analyse mesopic visual scenes and simulate the signals transmitted by the retina to the brain.
