关键词：视觉适应；感知模型；去马赛克；明适应；暗适应
摘 要：In this paper we describe a perceptual model that accounts for the time-varying changes to perceived color and brightness that occur due to time-varying adaptation and the transition between cone- and rod-mediated vision. Given a multispectral, high-dynamic-range image of a scene and the viewer's current adaptive state, this model produces a low-dynamic-range image that, when viewed photopically, creates a perception similar to what would have been experienced by the viewer in the original scene. When applied to a video sequence, our model produces temporally coherent output which models the viewer's adaptation state. A calibrated four-color-channel video camera is used to obtain video-rate data for scenes with moving objects. We describe a new demosaicing algorithm for working with this type of camera, and how the four color channels can be use to estimate independent rod and cone responses.