基于艺术规则的三维卡通人脸动画

发布时间：2018-06-23 02:11

本文选题：卡通动画 + 艺术规则　；参考：《苏州大学》2010年硕士论文

【摘要】： 三维卡通人脸动画是非真实感绘制领域的一个新分支,它是图形学的一个研究热点。随着动漫影视、电子游戏、虚拟会议等方面的飞速发展,对这一领域的研究逐渐增多。本文阐述了卡通人脸动画的研究现状并分析了各自的优缺点,在卡通人脸动画的三个重要部分上分别做出了一些工作。本文的主要工作和贡献体现在以下几个方面: 首先,提出了基于艺术规则指导的三维卡通模型重建算法。该方法将艺术家常用的夸张方法引入到模型夸张中,通过检测艺术家常用的脸部夸张部位,找出需要夸张的地方,并进行一定程度的夸张。在利用ASM特征点定位时,本文提出将额头上的特征点用其余的点根据人脸几何分布插值来确定,提高了特征点的准确度。其次,提出了单幅照片的纹理卡通化方法。该方法将人脸区域对齐到卡通照片模板上,并进行融合,通过调节融合系数来改变人脸卡通化的程度。采用泊松方程融合的方法将人脸区域融合到背景中来。为了提高融合速度,提出了一种快速纹理插值融合算法,预先根据卡通模板计算每个背景像素点所对应的皮肤像素点。实验结果证明,该方法不仅大大提高了融合速度,而且取得了较好的纹理融合效果。最后,采用非特定模型的动画参数转换方法,把别的模型中的动画参数通过转换变为适合本文模型的动画参数,实现三维卡通动画。在计算本文模型中顶点的动画参数时,利用该顶点与三角片元的三个顶点的位置关系来计算相应的动画参数,避免了传统方法经常出现的动画参数为零的情形。实验结果证明,本文的计算方法更加合理,卡通动画效果比较自然,能够较好的满足应用的需要。
[Abstract]:Three-dimensional cartoon face animation is a new branch in the field of non-realistic rendering, and it is a research hotspot in graphics. With the rapid development of animation, video, video game, virtual conference and so on, the research on this field is increasing gradually. This paper describes the current situation of cartoon face animation, analyzes their advantages and disadvantages, and does some work on three important parts of cartoon face animation. The main work and contributions of this paper are as follows: firstly, a 3D cartoon model reconstruction algorithm based on art rules is proposed. This method introduces the commonly used hyperbole method into the model exaggeration, by detecting the commonly used facial hyperbole part of the artist, finds out the place where the exaggeration is needed, and exaggerates to a certain extent. In order to improve the accuracy of feature points, the feature points on the forehead are determined by interpolation of the other points according to the geometric distribution of the face when the ASM feature points are located. Secondly, a method of texture card generalization for a single photo is proposed. The face region is aligned to the cartoon photo template, and the fusion coefficient is adjusted to change the degree of face card generalization. The Poisson equation fusion method is used to fuse the face region into the background. In order to improve the fusion speed, a fast texture interpolation fusion algorithm is proposed, in which the skin pixels corresponding to each background pixel are calculated in advance according to the cartoon template. Experimental results show that the proposed method not only improves the fusion speed, but also achieves a good texture fusion effect. Finally, the animation parameters in other models are transformed into the animation parameters suitable for the model in this paper, and the 3D cartoon animation is realized by using the method of non-specific model animation parameter conversion. When calculating the animation parameters of the vertex in this paper, the position relationship between the vertex and the three vertices of the triangular cell is used to calculate the corresponding animation parameters, thus avoiding the situation that the animation parameters are zero which is often found in the traditional method. Experimental results show that the calculation method is more reasonable, cartoon animation effect is more natural, and can meet the needs of application.
【学位授予单位】：苏州大学
【学位级别】：硕士
【学位授予年份】：2010
【分类号】：TP391.41

【参考文献】