Quality Control of Stereoscopic 3D Compositing Using Half-Occlusion Geometry

Proper depth perception and visual comfort of stereoscopic 3D (S3D) movies are greatly influenced by the consistency of depth cues. While a formal geometrical definition of stereo consistency can be derived, it is not made available to post-production artists through the commonly used compositing tools. This lack of automation is likely to let inconsistencies slip through quality control. In this paper, we show that many defects that can be introduced through S3D compositing can be detected in a unified manner by studying the geometry of half-occlusion (HO, regions visible in only one of the S3D views). The efficiency of the HO-based detection system is demonstrated on five commonly encountered problems: local and global pseudoscopy, rotoscopy mismatches, layer ordering issues, and window violations.