Portrait drawing from corresponding range and intensity images  

作　　者：Lu WANG Li-ming LOU Cheng-lei YANG Yue-zhu HUANG Xiang-xu MENG 

机构地区：[1]Department of Computer Science and Technology, Shandong University [2]Department of Public Security of Fujian Province

出　　处：《Journal of Zhejiang University-Science C(Computers and Electronics)》2013年第7期530-541,共12页浙江大学学报C辑（计算机与电子（英文版）

基　　金：supported by the National Natural Science Foundation of China (Nos. 61003149 and U1035004);the Natural Science Foundation of Shandong Province, China (No. ZR2010FQ011)

摘　　要：We propose a real-time rendering system for automatically creating a caricature drawing, i.e., an exaggerated portrait, of a human face, based on simultaneous use of a range image (or 3D mesh) and a registered photograph of the same face. Combining these information sources provides complementary information. Significant geometric lines such as occluding contours and suggestive contours are extracted from the range data, while textured areas corresponding to shading features are extracted from the photograph. These are combined, and then distorted to produce the final caricature. The final output may be produced using a choice of non-photorealistic rendering styles. Our system method works well for low resolution range images; for these it is fast enough to allow the viewpoint to be chosen in real time. The final output combines significant lines, textured areas, and optional shading, giving a pleasing result which preserves not only the shape cues of the geometric description, but also other essential visual characteristics of the facial image that cannot be deduced from geometry alone.We propose a real-time rendering system for automatically creating a caricature drawing, i.e., an exaggerated portrait, of a human face, based on simultaneous use of a range image （or 3D mesh） and a registered photograph of the same face. Com- bining these information sources provides complementary information. Significant geometric lines such as occluding contours and suggestive contours are extracted from the range data, while textured areas corresponding to shading features are extracted from the photograph. These are combined, and then distorted to produce the final caricature. The final output may be produced using a choice of non-photorealistic rendering styles. Our system method works well for low resolution range images; for these it is fast enough to allow the viewpoint to be chosen in real time. The final output combines significant lines, textured areas, and optional shading, giving a pleasing result which preserves not only the shape cues of the geometric description, but also other essential visual characteristics of the facial image that cannot be deduced from geometry alone.

关 键 词：Portrait drawing Line drawing Geometric lines Textured lines Caricature Exageration 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]