手绘图风格的三维模型线条渲染

现有的三维模型线条渲染方法,由于模型是网格结构,渲染得到线条图由大量的小线段组成,导致图形中有许多明显的棱角和孤立线段.提出了一种新的手绘图风格的三维模型线条渲染方法,将观察到的三维模型转化成简洁、自然的线条图.算法首先采用Suggestive Contours方法得到模型的特征线段集,通过分析线段的空间信息,将小线段连接成若干长线条,并用三次B样条曲线插值这些线条,然后引入B样条小波对线条进行简化.实验结果表明,本文的方法可以很好地连接这些线段集,得到平滑、简洁的手绘风格模型线条图.

Sketch Style Three-Dimensional Model Line Rendering

Current 3D model based line rendering methods produce drawings with a large number of small lines is due to the grid structure of the underlying model, resulting in many obvious corners and isolated segments in the drawings. In this paper, we propose a new sketch style 3-dimensional model line rendering method that transforms an observed 3D model into a drawing with simple and natural lines. Firstly, the method uses Suggestive Contours to get characteristic lines of the model. Then, these small lines are connected into a few long lines by analyzing their spatial information. Finally, cubic B-spline curves are utilized to interpolate the resultant lines with some simplification processing using B-spline wavelets. The rendering results show that the proposed method can connect characteristic lines well and get smooth and simple sketch style drawings.