| 一种刻线浮雕生成算法 |
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| 引用本文： | 刘胜兰,徐小燕,李博,张丽艳.一种刻线浮雕生成算法[J].小型微型计算机系统,2011,32(10). |
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| 作者姓名： | 刘胜兰 徐小燕 李博 张丽艳 |
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| 作者单位： | 南京航空航天大学机电学院,南京,210016 |
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| 基金项目： | 国家自然科学基金项目(50875126)资助 |
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| 摘 要： | 刻线浮雕是一类将特征线条雕刻在基面上的浅浮雕,在产品铭牌、包装品、建筑装饰等领域有广泛应用.以物体的三维几何模型为输入,提出一种刻线浮雕的生成算法.首先提取三维模型在给定视线方向上可见部分和不可见部分交界处的轮廓点；然后计算各点与视线方向相关的曲率值大小,并通过阈值设定对模型上的可用于浮雕效果的凹陷部分的特征点集进行提取；将膨胀和腐蚀这两种形态学操作运用在三角网格上,实现特征点集的优化,并对已有的腐蚀操作结构进行改进,避免孔洞的产生；最后给定特征点集的雕刻深度,就可获得刻线浮雕效果.实例证明,本文算法生成的浮雕具有很好的视觉效果.
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| 关 键 词： | 刻线浮雕 三角网格 曲率 形态操作 |
An Algorithm for Generating Line-engraving Relief |
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| LIU Sheng-lan
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XU Xiao-yan
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LI Bo
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ZHANG Li-yan.An Algorithm for Generating Line-engraving Relief[J].Mini-micro Systems,2011,32(10). |
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| Authors: | LIU Sheng-lan XU Xiao-yan LI Bo ZHANG Li-yan |
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| Affiliation: | LIU Sheng-lan,XU Xiao-yan,LI Bo,ZHANG Li-yan (College of Mechanical & Electrical Engineering,Nanjing University of Aeronautics & Astronautics,Nanjing 210016,China) |
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| Abstract: | Line-engraving relief is a kind of Bas-relief with line contours incised on a background surface.It is widely used in such application areas as sign-making,packaging,and architecture decorating.In this paper,an algorithm for generating line-engraving relief from 3D triangular mesh is proposed.Firstly,the silhouette points are extracted at the border where the surface turns away from the viewer and becomes invisible.Then the radial curvature,which is defined as the normal curvature in the direction of the vi... |
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| Keywords: | line-engraving relief triangle mesh curvature morphological operation |
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