[1]庞明勇,等.大规模虚拟地形的图像径向权混合生成算法[J].南京理工大学学报(自然科学版),2009,(04):438-443.
 PANG Ming-yong,ZHAO Rui-bin.Algorithm for Synthesizing Large-scale Virtual Terrain from Images Using Radially Weighted Blending[J].Journal of Nanjing University of Science and Technology,2009,(04):438-443.
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大规模虚拟地形的图像径向权混合生成算法
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
期数:
2009年04期
页码:
438-443
栏目:
出版日期:
2009-08-30

文章信息/Info

Title:
Algorithm for Synthesizing Large-scale Virtual Terrain from Images Using Radially Weighted Blending
作者:
庞明勇 1 2 赵瑞斌 1 2
1.南京师范大学教育技术系,江苏南京210097; 2. 北京大学视觉与听觉信息处理国家重点实验室, 北京100871
Author(s):
PANG Ming-yong12ZHAO Rui-bin12
1.Department of Educational Technology,Nanjing Normal University,Nanjing 210097,China;2.National Laboratory on Machine Perception,Beijing University,Beijing 100871,China
关键词:
地形合成 图像融合 虚拟现实 数字高程模型
Keywords:
terrain synthesis image blending virtual reality digital elevation models
分类号:
TP391.9
摘要:
结合图像处理技术和径向权混合方法,提出一种基于图像集的大规模虚拟地形自动生成算法。该算法首先由多幅图像色彩数据生成标准化地形拼接块模型,并通过滤波处理消除地形块内部的跳变现象;借助定义在地形块上的有限支撑径向权函数,对毗邻地形块的子块进行加权混合处理,实现了地形块的无缝拼接平滑过渡。该算法支持相关参数的交互式调整,使用户能够对地形的形状和平滑程度等进行有效控制。实验结果表明:该算法可以自动、快速、高效地生成满足不同形状和规模要求的虚拟地形模型。
Abstract:
A novel algorithm to synthesize large-scale virtual terrains from a set of images is presented based on digital image processing technologies and radially weighted blending method.The algorithm first creates standardized terrain-blocks from the images,and smoothes the blocks by employing fast Fourier transform and Butterworth’s low-pass filter.A radial weight defined on each block,which is utilized to synthesize four local neighboring blocks to a single blended area,is subsequently constructed for each block.As a result,a complete and smooth large-scale terrain can be obtained by blending operators with the radial weights.The algorithm also provides users a method to control the terrains effectively by adjusting several control parameters.Experimental results show that the algorithm can generate terrains with various scales and styles automatically,fast and effectively.

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备注/Memo

备注/Memo:
基金项目: 国家自然科学基金( 60873175);江苏省高校自然科学基础研究项目( 07KJD460108); 北京大学视觉与听觉信息处理国家重点实验室开放课题基金
作者简介: 庞明勇( 1968- ), 男,博士, 副教授,主要研究方向: 数字几何处理, E-mail: panion@netease. com。
更新日期/Last Update: 2012-11-19