Head-mountable display system

摘要

A head mountable display (HMD) system displays stereoscopic images with respect to a virtual display screen (VDS) position in response to a depth parameter of a region of interest (ROI) in respect of the stereoscopic image for display. The stereoscopic image is generated for display having image parallax appropriate to the VDS position. Metadata from a stereoscopic video signal define a VDS position in respect of subsets of frames of the signal. A depth parameter may be one of these metadata. A viewer gaze direction may be detected in order to detect an ROI. The VDS may be curved so as to at least partially surround the viewer.