分形理论在动画变形中的应用研究
发布时间：2019-06-02 15:37
【摘要】：动画变形近年来在计算机图形学领域中备受瞩目,它在热门的动漫制作、电影特效处理、建筑景观仿真等方面都具有极大的发展潜力和应用前景。本文重点研究的是以分形理论为基础的动画变形,将静态的分形图通过分形变形技术转换成动态的分形分帧图。具体工作如下： 利用分形迭代函数系统算法(IFS)绘制出自然界中具有分形特征的植物,通过调节带参数的IFS吸引子来实现一种分形植物到另一种分形植物的静态变形、分形树在风中摇曳的动态变形。研究结果表明,加入参数变量的IFS吸引子对图形变形的控制能力非常稳定,有效解决了分形变形过程中的图形失真、中断等问题,极大丰富了动画变形技术、充实了分形理论。 提出了一种利用虚拟现实建模语言(VRML)对分形动画进行真彩渲染的新方法。相比传统的IFS二维真彩分形图,该方法能够在三维空间对植物的外观颜色进行描述,并且具有简单快速、占用内存小、时间短、计算机可操作性强等优势。 改进了传统的L-系统算法,对一种基于VRML的交互式L-系统进行研究,在虚拟现实环境中生成了三维分形植物图。仿真表明改良后的方法生成的分形植物更加逼近真实世界的植物,实现了良好的虚拟现实交互功能。
[Abstract]:Animation deformation has attracted much attention in the field of computer graphics in recent years. It has great development potential and application prospect in hot animation production, film special effects processing, architectural landscape simulation and so on. In this paper, the animation deformation based on fractal theory is studied, and the static fractal graph is converted into dynamic fractal frame graph by fractal deformation technology. The concrete work is as follows: the fractal iterative function system algorithm (IFS) is used to draw the plants with fractal characteristics in nature, and the static deformation from one fractal plant to another is realized by adjusting the IFS attractor with parameters. The dynamic deformation of fractal trees swaying in the wind. The results show that the control ability of IFS Attractor with parameter variables to graphic deformation is very stable, which effectively solves the problems of graphic distortion and interruption in the process of fractal deformation, greatly enriches the animation deformation technology and enriches the fractal theory. A new method of true color rendering of fractal animation by using virtual reality modeling language (VRML) is proposed. Compared with the traditional IFS two-dimensional true color fractal graph, this method can describe the appearance color of plants in three-dimensional space, and has the advantages of simple and fast, small memory occupation, short time, strong computer maneuverability and so on. The traditional L-system algorithm is improved, and an interactive L-system based on VRML is studied. Three-dimensional fractal plant map is generated in virtual reality environment. The simulation results show that the fractal plants generated by the improved method are closer to the real-world plants and achieve good virtual reality interaction.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TP391.41;O189
本文编号：2491225
[Abstract]:Animation deformation has attracted much attention in the field of computer graphics in recent years. It has great development potential and application prospect in hot animation production, film special effects processing, architectural landscape simulation and so on. In this paper, the animation deformation based on fractal theory is studied, and the static fractal graph is converted into dynamic fractal frame graph by fractal deformation technology. The concrete work is as follows: the fractal iterative function system algorithm (IFS) is used to draw the plants with fractal characteristics in nature, and the static deformation from one fractal plant to another is realized by adjusting the IFS attractor with parameters. The dynamic deformation of fractal trees swaying in the wind. The results show that the control ability of IFS Attractor with parameter variables to graphic deformation is very stable, which effectively solves the problems of graphic distortion and interruption in the process of fractal deformation, greatly enriches the animation deformation technology and enriches the fractal theory. A new method of true color rendering of fractal animation by using virtual reality modeling language (VRML) is proposed. Compared with the traditional IFS two-dimensional true color fractal graph, this method can describe the appearance color of plants in three-dimensional space, and has the advantages of simple and fast, small memory occupation, short time, strong computer maneuverability and so on. The traditional L-system algorithm is improved, and an interactive L-system based on VRML is studied. Three-dimensional fractal plant map is generated in virtual reality environment. The simulation results show that the fractal plants generated by the improved method are closer to the real-world plants and achieve good virtual reality interaction.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TP391.41;O189
【参考文献】
相关期刊论文 前10条
1 眭俊华,周家纪;分形模拟技术中产生可控随机序列的方法[J];成都理工学院学报;2001年02期
2 璩柏青,张黎明;基于IFS代码的动画仿真 [J];电子科技;2004年08期
3 刘树群;王珊珊;;IFS分形吸引子的连续变形技术[J];兰州理工大学学报;2008年06期
4 张全伙;范慧琳;吕俊白;;L-系统生成树的计算机模拟[J];华侨大学学报(自然科学版);1993年04期
5 刘向东,廖欣,于海,朱伟国;迭代函数系IFS吸引子的参数控制与树木的模拟[J];计算机工程与应用;2000年05期
6 张莹;蒋大为;危才华;张正贤;;一种基于IFS的二维真彩分形变形方法[J];计算机工程与应用;2006年10期
7 王汝传,陈丹伟,顾翔;虚拟现实技术及其实现研究[J];计算机工程;2000年12期
8 张帆,谭建荣;VRML环境中3维分形植物的生成及应用[J];计算机工程;2003年21期
9 张莹;蒋大为;张正贤;危才华;;二维迭代函数系统分形吸引子自适应对应变形算法[J];计算机辅助设计与图形学学报;2006年07期
10 冯莉;王力;;基于L-系统的三维分形植物的算法及实现[J];计算机仿真;2005年11期
，本文编号：2491225
本文链接：https://www.wllwen.com/wenyilunwen/dongmansheji/2491225.html
