Photorealistic rendering methods produce accurate solutions to the rendering equation but are very computationally expensive and typically noninteractive. Some researchers have used graphics hardware to obtain photorealistic effects but not at interactive frame rates. We propose a technique to achieve near photorealism of simple indoor scenes at interactive rates using both CPUs and graphics ha...

We present an optimization of the height-field water-column based approach for water simulation, providing three-dimensional animation of water flow on natural terrains. Our approach eliminates the storage and management of redundant virtual pipes between columns of water and also removes output dependency for parallel implementation, making it efficient for interactive computer graphics applic...

The main aim of the research project, which is in progress at the UTL, is to develop a virtual interactive model as a tool to support decision-making in the planning of construction maintenance and facilities management. The virtual model gives the capacity to allow the user to transmit, visually and interactively, information related to the components of a building, defined as a function of th...

Current relighting applications often constrain one or several factors of the rendering equation to keep the rendering speed real-time. For example, visibility is often precalculated and animations are not allowed, changes in lighting are limited to simple rotation or the lighting is not very detailed. Other techniques compromise on quality and often coarsely tabulate BRDF functions. In order t...

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x 1. Motivation for a Spatially Augmented Reality Tangible User Interface with a Distributed Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.1 Spatially Augmented Reality . . . . . . . . . . . . . . . . . . . . . . . . 1 1.2 Tangible User Interfaces . . . . . . . . . . . . . . . . . . . . . . ...

Area lights add tremendous realism, but rendering them interactively proves challenging. Integrating visibility is costly, even with current shadowing techniques, and existing methods frequently ignore illumination variations at unoccluded points due to changing radiance over the light’s surface. We extend recent image-space work that reduces costs by gathering illumination in a multiresolution...

Many rendering systems rely on spherical harmonics or wavelets that provide a mean to solve the rendering equation using scalar products. In addition, these basis of functions may represent hemispherical lighting, visibility and reflectance with a small number of coefficients. However, their use requires the projection of each term of the rendering equation, which is computationally intensive a...

In this paper, we present a hybrid software–hardware rendering technique which can compute and visualize global illumination effects in dynamic scenes at interactive rates. Our system uses a hardware splatting technique simular to, but developed independently of, Stüerzlinger et al. The technique involves a progressively refined photon tracing calculation capable of simulating a wide range of B...

. light is an environmental factor, which has profound influences on broilers performance and frequently overlooked management practices. this study was conducted to compare the effects of different lighting programs on growth, carcass parts and economical performance using 320 one day–old broilers (arian 386) in completely randomized design with 4 treatments and 8 replicates per each treatment...

Context aware applications utilize environmental information which is usually collected by different sensors. For example, in smart homes environment’s embedded sensors provide such measurements of physical variables as temperature or lighting. However, the integration, interpretation and dissemination of context and sensor information are complex. This work describes the ontology based home ma...