| 利用控制线段的实时图像变形方法 |
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| 引用本文： | 黄武,姚淑波,关胜亮,夏时洪.利用控制线段的实时图像变形方法[J].计算机辅助设计与图形学学报,2010,22(12). |
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| 作者姓名： | 黄武 姚淑波 关胜亮 夏时洪 |
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| 作者单位： | 中国科学院计算技术研究所前瞻中心;中国科学院研究生院;河北科技师范学院信息学院; |
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| 摘 要： | 为了使用户能够通过在图像上选择一些控制句柄来操控图像的变形行为,提出一种使用线段作为控制句柄的实时图像变形方法.该方法按照控制线段的长度对网格的边长进行适当缩放,以产生相似变换的图像变形结果;图像变形过程中,在保持用户给定约束的情况下,尽可能保持图像网格边界顶点的拉普拉斯坐标和图像网格内部顶点的中间值坐标.最后通过实验验证了文中方法的有效性和实时性.
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| 关 键 词： | 图像变形 拉普拉斯坐标 中间值坐标 相似变换 |
A Real-Time Image Deformation Method Based on Line Handles |
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| Huang Wu,Yao Shubo,Guan Shengliang,Xia Shihong.A Real-Time Image Deformation Method Based on Line Handles[J].Journal of Computer-Aided Design & Computer Graphics,2010,22(12). |
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| Authors: | Huang Wu Yao Shubo Guan Shengliang Xia Shihong |
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| Affiliation: | Huang Wu1,2),Yao Shubo3),Guan Shengliang1,and Xia Shihong1)1)(Advanced Center,Institute of Computing Technology,Chinese Academy of Sciences,Beijing 100190) 2)(Graduate School of Chinese Academy of Sciences,Beijing 100049)3)(College of Information,Hebei Normal University of Science and Technology,Qinhuangdao 066004) |
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| Abstract: | Image deformation denotes a way to deform the image based on the position of the input control handles.This paper introduces an optimization-driven image deformation technique based on line handles.The goal of the optimization is that the Laplacian coordinates of the boundary vertices and the mean-value coordinates of the interior vertices are preserved,while satisfying the deformation constraints specified by the user.To get a realistic similar transformation,the length of an edge is scaled based on the le... |
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| Keywords: | image deformation Laplacian coordinate mean-value coordinate similar transformation |
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