While there have been numerous studies concerning human perception in stereoscopic environments, rules of
thumb for cinematography in stereoscopy have not yet been well-established. To that aim, we present experiments
and results of subject testing in a stereoscopic environment, similar to that of a theater (i.e. large flat
screen without head-tracking). In particular we wish to empirically identify thresholds at which different types
of backgrounds, referred to in the computer animation industry as matte paintings, can be used while still maintaining
the illusion of seamless perspective and depth for a particular scene and camera shot. In monoscopic
synthetic imagery, any type of matte painting that maintains proper perspective lines, depth cues, and coherent
lighting and textures saves in production costs while still maintaining the illusion of an alternate cinematic reality.
However, in stereoscopic synthetic imagery, a 2D matte painting that worked in monoscopy may fail to provide
the intended illusion of depth because the viewer has added depth information provided by stereopsis. We intend
to observe two stereoscopic perceptual thresholds in this study which will provide practical guidelines indicating
when to use each of three types of matte paintings. We ran subject tests in two virtual testing environments,
each with varying conditions. Data were collected showing how the choices of the users matched the correct
response, and the resulting perceptual threshold patterns are discussed below.