流线形风格化图像生成算法  

Rendering Algorithm for Streamlines Style Painting

作　　者：肖亮[1] 钱小燕[2] 吴慧中[1] 韦志辉[1] 

机构地区：[1]南京理工大学计算机科学与技术学院,南京210094 [2]南京航空航天大学民航学院,南京210016

出　　处：《计算机辅助设计与图形学学报》2008年第7期843-849,共7页Journal of Computer-Aided Design & Computer Graphics

基　　金：教育部博士点基金(20070288050);江苏省自然科学基金(BK2006569);中国博士后基金(20060390285)

摘　　要：流线形风格化图像是印象派风格的典型代表,其艺术特点是通过流线条表现狂野与活泼的流动感,又通过色彩的层叠感表现时空的凝滞性.提出一种流线形风格化图像绘制算法,通过提取目标图像的结构矢量场,利用欧拉弹性模型进行光顺化得到流线场;通过结合凹凸映射的多源光照渲染和色彩扰动得到色彩层叠感强的纹理图;然后利用线积分卷积方法对流线场和纹理图进行合成,并利用样本梵高图像进行颜色传输得到最终的绘制结果.实验结果表明该算法自动化程度高,绘制结果具有较好的流线流动感和色彩层叠感.Streamline style oil paintings are the representative oil painting with impressionist effect. Their artistic expression can often convey by the feeling of wide and vivid streamline structure and space-time stagnate through color wash layering. A new automatic algorithm for rendering streamline style paintings is proposed in the paper. In this algorithm, the structure vector field is firstly extracted and then smoothed with the Euler＇s elastic model to obtain the streamline field, and the texture map with hierarchical color appearance is rendered using bump-mapping, multiple light source rendering and color perturbation techniques. Then line-integral convolution （LIC） method is applied to synthesizing the streamline field and the texture map. Finally the color transfer between the sample image and the synthesis image is used to obtain the rendering image. Experimental results show that our algorithm can be used to automatically create Van Gogh＇s style oil painting with good appearance of streamlines and color appearance.

关 键 词：非真实感绘制 流线风格 欧拉弹性体 线积分卷积 颜色传输 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]