3DTV: One stream for different screens: Keeping perceived scene proportions by adjusting camera parameters

Stereo and 3D video material is usually optimized during the production phase for a particular display size and viewing distance. When the content is shown on a display of different size and/or from different viewing distance, the perceived proportions of objects, e.g. object's depth relative to object's size, will be distorted compared to the original viewing conditions. This can make the scene look unnatural and even lead to eye strain and fatigue when observing the content. This paper proposes equations for adapting rendering parameters to new viewing conditions so that the perceived proportions of the objects in 3D scene are exactly the same as for the reference viewing conditions.