Gaze-Dependent Ambient Occlusion

Ambient Occlusion is a method of creating shades on the scene, due to occlusion. It is a good looking approximation of the light radiation, however it is very expensive method. It needs a large number of samples to get fair effects. In this article we propose a speed increase of the AO rendering, by using the eye tracker. Human cannot see high frequency details in parafoveal, and we can render this area with less accuracy. We decrease the number of AO samples with distance from the observer gaze point. The absence of AO shading in parafoveal is being rarely noticed and reducing the samples gives us considerable rendering speed boost.