Brightness Contrast in Stereoscopic 3D Perception

Abstract

Abstract This paper discusses the effect of brightness contrast on stereoscopic 3D (S3D) perception from a psychophysical viewpoint. It considers the way in which S3D perception is influenced by different decisions of brightness contrast, and identifies the thresholds of S3D perception in several brightness adjustments, which can provide guidance during colouring decisions for S3D imaging. In particular, different levels of brightness are tested on foreground and background objects to build brightness contrast in computer graphic scenes. Psychophysical trials are utilized to examine the thresholds of observers’ depth perception. A polarised projection system is built for stereoscopic viewing and the image stimuli are rendered from stereoscopic virtual cameras by renowned 3D film making programme during experiments. The data indicates that it was able to provide a significant effect over the brightness adjustments in controlling the perceived depth in stereoscopic perception, and darker object in foreground with brighter object in background result stronger stereoscopic 3D perception.