<title>Mapping perceived depth to regions of interest in stereoscopic images</title>

The usable perceived depth range of a stereoscopic 3D display is limited by human factors considerations to a\uddefined range around the screen plane. There is therefore a need in stereoscopic image creation to map depth\udfrom the scene to a target display without exceeding these limits. Recent image capture methods provide precise\udcontrol over this depth mapping but map a single range of scene depth as a whole and are unable to give\udpreferential stereoscopic representation to a particular region of interest in the scene.\udA new approach to stereoscopic image creation is described that allows a defined region of interest in scene\uddepth to have an improved perceived depth representation compared to other regions of the scene. For example\udin a game this may be the region of depth around a game character, or in a scientific visualization the region\udaround a particular feature of interest.\udTo realise this approach we present a novel algorithm for stereoscopic image capture and describe an implementation\udfor the widely used ray-tracing package POV-Ray. Results demonstrate how this approach provides\udcontent creators with improved control over perceived depth representation in stereoscopic images