基于线条画的2.5D卡通模型  

Line Drawings Based 2.5D Cartoon Models

作　　者：孙玉红[1] 屠长河[2] 

机构地区：[1]曲阜师范大学计算机科学学院,日照276826 [2]山东大学计算机科学与技术学院,济南250101

出　　处：《计算机辅助设计与图形学学报》2013年第9期1312-1317,共6页Journal of Computer-Aided Design & Computer Graphics

基　　金：国家自然基金(60970046;61272242);山东省自然基金重点项目(ZR2009GZ002);山东省自然基金(ZR2010FQ004);曲阜师范大学校科研基金(XJ201120)

摘　　要：在卡通设计中,为了通过少量的2D视图生成卡通对象任意方向的视图,形成类似对象旋转的3D效果,提出一种基于线条画输入的2.5D卡通模型.基于正交的2个视线方向上卡通对象的线条画,把其中的笔画表示为2.5D结构并进行分类,然后根据笔画的类别分别用形状插值或类比的方法生成新的形状;用画家算法结合分组的方法判断笔画的可见性,以自动生成2个输入方向中任意方向的视图.实验结果表明,该模型减少了对特定绘画程序的依赖,在中间视图的质量上比已有方法有很大提高.A new 2.5D line drawings cartoon model is presented in the paper. Using the model, given two orthographic views of a line drawing cartoon picture, we can generate a set of new views of the cartoon object in these two pictures and simulate the rotation from one view to another by an specific interpolating techniques proposed in the paper. First, all strokes in the two given pictures are extracted. Then, the correspondences o~ strokes in these two pictures are computed by shape similarities and paired. Third, from two paired strokes, a depth of a plane that the two strokes lie on is acquired. Fourth, by interpolating points of two corresponding strokes and rotating the resultant stroke in 3D space, the stroke viewed from an arbitrary direction between the two given directions was generated. The visibility of interpolated strokes was determined by the painter＇s algorithm. Finally, a plausible rendering of the cartoon picture from any views between the two given directions could be generated. Comparing to previous methods, the experimental results show that the model is independent of particular line drawing systems, and the rendering effect is much improved.

关 键 词：非真实感绘制 线条画 2 5D卡通 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]