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目前,Marching Cubes算法是一种热门的三维建模方法,然而,对于由中国水墨画的笔画线条所构成的复杂形状,其应用具有一定的局限性.针对生成三维水墨动画这一挑战性课题,提出一种由中国水墨画图像构建对应三维模型的交互式方法.同时,基于该方法,设计实现一个半自动的三维模型构建工具:首先,交互式提取输入的水墨画图像中的笔画;然后通过生成笔画的二维表面网格和三维蒙皮网格输出相应的三维模型;最后,将原有水墨画中的墨色纹理用来渲染生成的三维模型.实验结果表明,该方法适合将二维水墨画图像对象转化为三维模型.此外,生成的三维模型数据符合主流建模及动画软件的格式要求.因此,在三维场景中,该项研究工作除了表现水墨画的墨色效果,也展示出其笔画的造型艺术特征,还可应用于三维水墨动画的制作,提高制作效率.
Currently, the Marching Cubes algorithm is a popular 3D modeling method, however, its application has some limitations to the complex shapes formed by Chinese ink and brush strokes lines. In view of the challenging task of generating 3D ink-and-ink animation, A kind of interactive method to construct corresponding 3D model from Chinese ink painting image.At the same time, based on this method, a semi-automatic 3D model construction tool is designed and implemented: Firstly, the strokes in the input ink painting image are extracted interactively; Dimensional surface model and the three-dimensional skin mesh are used to output the corresponding three-dimensional model.Finally, the ink texture in the original ink painting is used to render the generated three-dimensional model.The experimental results show that the method is suitable for converting two-dimensional ink image objects into three-dimensional Model.In addition, the generated 3D model data conform to the format requirements of the mainstream modeling and animation software.Therefore, in the three-dimensional scene, this research project not only displays the ink effect of ink painting, but also displays the artistic features of the stroke, Used in the production of three-dimensional ink animation, improve production efficiency.