系统仿真学报 ›› 2015, Vol. 27 ›› Issue (4): 816-823.

• 虚拟现实与可视化 • 上一篇    下一篇

基于移动最小二乘法的图形图像局部变形技术

杜晓荣1, 平淑文1, 张永2   

  1. 1.中山大学物理科学与工程技术学院, 广州 510275;
    2.中山大学信息科学与技术学院, 广州 510006
  • 收稿日期:2014-01-05 修回日期:2014-04-11 发布日期:2020-08-20
  • 作者简介:杜晓荣(1958-),男,安徽人,教授,研究方向为软件开发方法及支撑环境、图形图像技术及应用等;平淑文(1991-),女,山西人,硕士生,研究方向为图形图像技术及应用;张永(1982-),男,安徽人,博士生,研究方向为计算机图形图像技术及应用。
  • 基金资助:
    广东省省部产学研重点项目(2008A090400013);2012年珠海市科技计划项目(2012D0501990009)

Graphics and Image Local Deformation Based on Moving Least Squares Method

Du Xiaorong1, Ping Shuwen1, Zhang Yong2   

  1. 1. School of Physics and Engineering, Sun Yat-Sen University, Guangzhou 510275, China;
    2. School of Information Science and Technology, Sun Yat-Sen University, Guangzhou 510006, China
  • Received:2014-01-05 Revised:2014-04-11 Published:2020-08-20

摘要: 结合移动最小二乘方法,定义了一个基于控制点和控制区域的变形函数,提出了一种图像变形的局部化处理技术,并将其扩展为适用于矢量图形变形的方法。通过添加控制点以控制变形,并将目标变形区域设定为控制区域,移动控制点位置,使图像及矢量图形产生变形,生成仿射变换、相似变换及刚性变换结果。实验表明,该方法在保证图像及矢量图形局部平滑变形的前提下,可抑制边界处的混叠;且将其应用于矢量图形变形,可定制多种复杂的变形效果。

关键词: 矢量图形, 变形, 移动最小二乘法, 图像, 局部

Abstract: Combined with Moving Least Squares method, a deformation function based on control points and area was defined. A localization processing method for image deformation was proposed which extended to vector graph deformation. After adding control points to control deformation and setting the target deformation zone as control area, control points were controlled to deform image and vector graph, which could produce affine transformation, similarity transformation and rigid transformation results. Experiments show that, this method can inhibit boundary aliasing as well as ensuring graphics and image local deformation result smoothness. By applying it to vector graph deformation, multiple complex deformation effects can also be customized.

Key words: vector graph, deformation, Moving Least Squares, image, local

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