基于包围盒的快速3D模型切割显示和标注算法  

Bounding-box based fast cutaway and labeling of complex 3D models

作　　者：李冉[1,2] 

机构地区：[1]清华大学计算机科学与技术系,北京100084 [2]可视媒体智能处理与内容安全北京市高等学校工程研究中心,北京100084

出　　处：《中国科技论文》2012年第1期42-48,共7页China Sciencepaper

摘　　要：3D模型的切割显示是一种对具有内部结构的3D模型采用的可视化技术,通过一定技术切割掉部分外部物体,从而使观察者看到处在内部的目标模型。研究对象为具有复杂内部结构3D模型的切割显示技术,在模型具有嵌套遮挡关系的情况下,对外部物体施加层次化和不同类型的切割,使得观察者清楚地看到目标模型和内部物体的空间关系。切割显示流程之后,为达到更好的可视化效果,实现了高效的模型名称左右放射形标注,以便在显示模型本身的同时,提供模型的语义信息,给观察者更完整的印象。为了使切割显示具有更好的用户体验和交互性,提出了基于模型包围盒的剔除技术,使切割算法的效率得到很大提高,对于不很复杂的场景可以达到接近实时的帧率,结合模型的标注,使用户可以在任意角度下观察切割结果。Cutaway illustrations of 3D models is a visualization technology used in iUustmtions of 3D scenes with complex inner structure, the technology try~ to cut part of outside objects in order to give a clear view of the inner objects. We mainly focus on cutaway technology of complex 3D scenes which have nesting occlusion relationships. By giving hierarchical and different types of cutaways, we provide a relative clear view of the inner objective objects and their context. We give a left-right irraditation labeling to the cutaway result, in order to provide semantics information. For better user experience, we propose one accelerating technoly using bounding-box of objects, through this accelerating, cutaway and labeling of relatively complex scenes earl get nearly realtime framerates.

关 键 词：切割显示 模型标注 包围盒 可视化 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]