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首页> 外文期刊>Journal of Computers >Foliage Simplification Based on Multi-viewpoints for Efficient Rendering
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Foliage Simplification Based on Multi-viewpoints for Efficient Rendering

机译：基于多视点的植物简化以实现高效渲染

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摘要

Vegetation is an essential component of the outdoor scene in the fields of virtual environment and computer game. The foliage models consisting of a great number of complex structures make real-time visualization impossible. In this paper, a novel viewpoint-driven foliage simplification framework is proposed for efficiently rendering virtual plants in polygonal models. Before the collapsing step, complex leaf models are reshaped as quadrilaterals and then separated into clouds of cells for rapidly finding the best leaf pair. Unlike the geometric foliage simplification approaches, we introduce an information-theoretic tool, mutual information to measure the leaf visibility and the leaf-collapse error from multi-viewpoints. The viewpointdependent foliage simplification algorithm produces foliage level of detail (LoD) models close to the original ones in terms of visual and geometric criteria. Our approach is appropriate for applications which require exact geometry tolerance but also high visual quality.
机译：在虚拟环境和计算机游戏领域，植被是户外场景的重要组成部分。由大量复杂结构组成的树叶模型无法实现实时可视化。在本文中，提出了一种新颖的视点驱动的叶面简化框架，以有效地渲染多边形模型中的虚拟植物。在折叠步骤之前，将复杂的叶子模型重塑为四边形，然后分离为细胞云，以快速找到最佳的叶子对。与几何叶子简化方法不同，我们引入了一种信息理论工具，即互信息来从多个角度测量叶子的可见性和叶子塌陷误差。视点相关的树叶简化算法可在视觉和几何标准上生成接近原始模型的树叶细节级别（LoD）模型。我们的方法适用于需要精确的几何公差和高视觉质量的应用。

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