Interactive virtual relighting of real scenes
نویسندگان
چکیده
منابع مشابه
Interactive Virtual Relighting of Real Scenes
Computer augmented reality (CAR) is a rapidly emerging field which enables users to mix real and virtual worlds. Our goal is to provide interactive tools to perform common illumination, i.e., light interactions between real and virtual objects, including shadows and relighting (real and virtual light source modification). In particular, we concentrate on virtually modifying real light source in...
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In our method, real scene geometry is first approximately reconstructed from photographs. Additional images are taken from a single viewpoint with a real light in different positions to estimate reflectance. A filtering process is used to compensate for inaccuracies, and per image reflectances are averaged to generate an approximate diffuse reflectance image for the given viewpoint, removing sh...
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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...
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Interactive virtual environments used in conjunction with haptic displays are often staticviewpoint scenes that contain a mixture of static and dynamic virtual objects. The immersive realism of these environments is often limited by the graphical rendering system, typically OpenGL or Direct3D. In order to present more realistic scenes for haptic interaction without requiring additional modeling...
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Rendering production-quality cinematic scenes requires high computational and temporal costs. From an artist’s perspective, one must wait for several hours for feedback on even minute changes of light positions and parameters. Previous work approximates scenes so that adjustments on lights may be carried out with interactive feedback, so long as geometry and materials remain constant. We build ...
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ژورنال
عنوان ژورنال: IEEE Transactions on Visualization and Computer Graphics
سال: 2000
ISSN: 1077-2626
DOI: 10.1109/2945.895874