well-designed lighting decreases accidents and diseases of eyes and can increase productivity and concentration. increase of energy price and a high proportion of electric lighting energy consumption in buildings due to defects in designing and maintenance led to desirable lighting to be reduced. one of our challenges in providing health and quality of lighting is lack of economic justification...

This paper discusses the learning of color transformations for object recognition in various lighting conditions, a function which is needed in systems for object recognition by interaction with the user. The system first constructs a model of the target object under the reference lighting conditions. Since the lighting conditions in actual object recognition differ from those of object model c...

We present a framework for interactive lighting design based on linear re-rendering. The rendering operation is linear with respect to light sources, assuming a xed scene and camera geometry. This linearity means that a scene may be interactively rerendered via linear combination of a set of basis images, each rendered under a particular basis light. We focus on choosing and designing a suitabl...

LED-based lighting systems have introduced radically new possibilities in the area of artificial lighting. Being physically small the LED can be positioned or embedded into luminaires, materials and even the very fabric of a building or environment. Hundreds of LEDs can be used in a single luminaire or space, of which could also have different light output properties. The light switch therefore...

Since grass is very abundant on the Earth’s surface, it is an important element of natural 3D scenes. Real-time realistic rendering of grass has always been difficult due to the huge number of grass blades. Overcoming this geometric complexity usually requires many coarse approximations to provide interactive frame rates. However, the performance comes at the cost of poor lighting quality and l...

This paper presents a technique, based on pre-computed light transport and separable BRDF approximation, for interactive rendering of non-diffuse objects under all-frequency environment illumination. Existing techniques using spherical harmonics to represent environment maps and transport functions are limited to low-frequency light transport effects. Non-linear wavelet lighting approximation i...

Research on interactive drama, or interactive fiction in general, mostly focuses on character and plot development. It is important to investigate the change of plot and character responses due to interaction in interactive stories. However, it is also important to investigate the change of visual designs and setups, including lighting color, position and angle, camera angle, position, and move...

In this work we present an improved rendering algorithm for the planning of stage lighting using photon mapping, since existing software implements algorithms that do not suit the lighting workflow in a theatre adequately. During theatre lighting, positional changes of light sources are occuring rarely compared to intensity and color changes: Once a light is positioned and aimed correctly, many...

We present a framework for interactive lighting design based on linear re-rendering. The rendering operation is linear with respect to light sources, assuming a xed scene and camera geometry. This linearity means that a scene may be interactively rerendered via linear combination of a set of basis images, each rendered under a particular basis light. We focus on choosing and designing a suitabl...