The research of Virtual plants growth (plant growth modeling) is derived from computer science, simulation technology, agriculture and forestry science as an inter-discipline. The main research purpose is: exploring the inherent mechanism of plant growth, which is rebuilt and simulated on computers, then guide the further research of agriculture and forestry related technology (e.g., GIS,
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Many applications require rendering glossy scenes fast and accurately. However, the directional, but non-specular, reflections of glossy materials make such task challenging, especially when computing inter-reflections between glossy materials. In this paper, we propose a new algorithm which is composed of bi-directional path clustering and virtual point lights hierarchy for efficient computing such inter-reflections and
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Ray tracing based rendering technique is an important research domain in Computer Graphics. It plays an essential role in many applied fields such as digital entertainment, scientific visualization, computer generated films and animations, and virtual reality.In this paper, we first make a briefly introduction on the background and state-of-the-art of modern graphics rendering techniques, especially
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In this paper, we made a short introduction of the history of photo-realistic rendering, and compared the PRT (Precomputed Radiance Transfer) technique with traditional rendering techniques. Then we summarized the techniques relative to PRT framework and found that existing method cannot work well in rendering caustics effect and high-frequency shadows of dynamic scenes and in
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Computation of global illumination is an important means in the pursuit of photorealism of computer-generated images. It is of particular importance in scenes with glossy surfaces, since it conditions correct perception of glossy material characteristics. This dissertation focuses on efficient computation of global illumination in presence of glossy surfaces. Computing global illumination on those surfaces
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In recent years, with the rapid development of the computer hardware, especially the great progress of the graphic hardware performance, the computer graphics has a considerable development. The improvement of hardware expands the application demand and rendering realism has become a hot topic of people’s attention. The photon mapping has become a research hotspot, because
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Augmented Reality (AR), also mentioned as Mixed Reality, brings virtual information into real world through computer technology, real environment and virtual object are mixed together in the same space at the same time, thus a new and real-visualized environment is displayed to visitors. On the aspect of displaying, this thesis mainly focus on Spatial Augmented
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Global illumination provides viewers with important cues that enhance understanding of shapes, materials and spatial relationships in a virtual scene and can significantly improve the realism of computer synthesized images. While global illumination is desirable in many interactive applications, the computational expense has been limiting its use to off-line applications. Recently, many researches focus on
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This thesis is about interactive global illumination rendering with dynamic materials. The users can change the materials by interaction if dynamic materials are used. Global illumination rendering with fixed materials can be solved by precomputed radiance transfer(PRT). Researchers turn to global illumination rendering with dynamic materials these years. The algorithms proposed in this thesis allow
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Global illumination algorithms can synthesize realistic images. Both direct lighting and indirect lighting can be calculated with global illumination algorithms. Direct lighting is the direct contribution of light source on objects; indirect lighting is the contribution of light which is reflected or refracted several times. Global illumination algorithms are widely used in areas such as
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