PDF

Description

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.

Details

Files

Statistics

from
to
Export
Download Full History