Transilluminator using fibre ray lighting.

Towards Using Realistic Ray Tracing in Augmented Reality Applications with Natural Lighting

Virtual objects in augmented reality applications often appear flat and thus violate the immersion. To further extend the range of illumination effects and to improve the visual quality of the renderings we combine augmented reality, ray tracing and image based lighting techniques. We explore the resulting possibilities and problems which occur in such a scenario. Beyond that we present a metho...

Screen Space Spherical Harmonic Occlusion

Email: [email protected] [email protected] References Simulating global illumination demands for solving the lighting integral of a surface point. Ambient Occlusion (AO): pro: appealing approximation of local occlusion con: no directional information (static gray shadows) Screen Space Directional Occlusion (SSDO) [Ritschel09]: pro: combination of occlusion sampling a...

To an Isolated Light Emitting Diode (led) Target

Steady-state accommodative responses to a standard white LED light were compared to a high contrast reduced Snellen chart with normal room illumination under binocular and monocular viewing conditions. These responses were also compared to a diffuse transilluminator beam. Targets were presented at 2m, 0.5m, and 0.25m test distances, and the accommodative responses were objectively assessed. Dur...

Complete Title: Three-dimensional Fibre Segment Orientation Distribution Using X-ray Microtomography Brief Title: 3D fibre segment orientation distribution by XMT

Networked Indoor Lighting Controls with Visible Light Communication

Intelligent lighting systems employ dimmable luminaires, photosensors, and occupancy sensors to adapt to daylight and user presence conditions in indoor environments. By providing the illumination required for users and no more, significant energy savings can be made. The state of the art in these lighting systems currently relies on dedicated communication hardware such as radio networking mod...