Despite the fact that there are currently a number of enjoyable digital games in which light plays a key role, we lack a vocabulary with which to discuss simulated illumination in game worlds. An understanding of lighting practices in other media, such as 3d computer-generated animation and film, must be supplemented with an awareness of real-space disciplines such as architectural lighting if ...

In the context of non-photorealistic imaging, such as digital cel animation, lighting is symbolic and stylized to depict the scene’s mood and the geometric or physical features of the objects in the scene. Stylized light and shade should therefore be intentionally animated rather than rigorously simulated. However, it is difficult to achieve smooth animation of light and shade that are stylized...

Video and computer games are among the most complex forms of interactive media. Games simulate many elements of traditional media, such as plot, characters, sound and music, lighting and mise-én-scene. However, games are digital artifacts played through graphic interfaces and controllers. As interactive experiences, games are a host of player challenges ranging from more deliberate decision-mak...

We present a robust implementation of stereo-based head tracking designed for interactive environments with uncontrolled lighting. We integrate fast face detection and drift reduction algorithms with a gradient-based stereo rigid motion tracking technique. Our system can automatically segment and track a user’s head under large rotation and illumination variations. Precision and usability of ou...

One of the main obstacles to the use of global illumination in image synthesis industry is the considerable amount of time needed to compute the lighting for a single image. Until now, this computational cost has prevented its widespread use in interactive design applications as well as in computer animations. Several algorithms have been proposed to address these issues. In this report, we pre...

Scenes lit with high dynamic range environment maps of real-world environments exhibit all the complex nuances of natural illumination. For applications that need lighting adjustments to the rendered images, editing environment maps directly is still cumbersome. First, designers have to determine which region in the environment map is responsible for the specific lighting feature (e.g. diffuse ...

This paper presents a new data structure for light field rendering, which resembles a Star Trek holodeck in form and function. The grid on a holodeck section acts as a fourdimensional rendering target for a ray tracing algorithm, whose goal is to update an interactive display. A holodeck server coordinates separate ray evaluation and display processes, optimizing disk and memory usage. Holodeck...