1. Generation of Chinese Character Based on Human Vision and Prior Knowledge of Calligraphy 报告人： 史操 作者： 史操、肖建国、贾文华、许灿辉 单位： 北京大学计算机科学技术研究所 NLP & CC 2012: 基于人类视觉和书法先验知识的汉字自动生成

2. Abstract 本文根据中国书法先验知识对汉字笔画及结构进 行建模，提出一种 五层 框架用于表征 笔画 及 部件 间的 相关性 。通过分析书法家特有的书法技巧，拆 分书法字为本文提出的五层框架提供充足的笔画及部 件 样本 。根据 Marr 提出的对人类视觉的若干假设 ，本文提出了 可量化 的视觉美学准则用于指导汉字 自动生成。使用贝叶斯统计原理，可将整个汉字生成 过程描述为一个 贝叶斯动态模型 。模型中 状态方 程 控制对笔画、部件的线性变换，并且将本文提出 的视觉美学准则应用于 观测方程 之中。

3. Previous Work 1. Handwriting Imitation 2. Samples Based Character Generation ( Font Companies ) ( Font Companies )

4. Previous Work 1. Handwriting Imitation

5. Previous Work 2. Samples Based Character Generation Yan Zhenqing’s Calligraphy Generated by our algorithm

6. Previous Work 2. Samples Based Character Generation Yan Zhenqing’s Calligraphy Generated by our algorithm

7. Previous Work 2. Samples Based Character Generation Yan Zhenqing’s Calligraphy Generated by our algorithm

8. Modeling Prior Knowledge of Calligraphy Five layers framework to represent Chinese character

9. Modeling Prior Knowledge of Calligraphy Modeling Stroke and DFS

10. Modeling Prior Knowledge of Calligraphy

11. Modeling Radical and DFR (a) (b) (c) (d) (a) (b) (c) (d)

12. Automatic Generation Algorithm of Chinese Character David Marr's “Vision” investigates the spatial arrangement of objects in an image 1. Average local intensity; 2. Average size of similar objects; 3. Local density of the objects; 4. Local orientation of the objects; 5. Local distances associated with the spatial arrangement of similar objects; 6. Local orientation associated with the spatial arrangement of similar objects.

13. Automatic Generation Algorithm of Chinese Character David Marr's “Vision” investigates the spatial arrangement of objects in an image 1. Average local intensity; 2. Average size of similar objects; 3. Local density of the objects;

14. Automatic Generation Algorithm of Chinese Character David Marr's “Vision” investigates the spatial arrangement of objects in an image 1. Average local intensity; 2. Average size of similar objects; 3. Local density of the objects;

15. Automatic Generation Algorithm of Chinese Character David Marr's “Vision” investigates the spatial arrangement of objects in an image 1. Average local intensity; 2. Average size of similar objects; 3. Local density of the objects;

16. Automatic Generation Algorithm of Chinese Character David Marr's “Vision” investigates the spatial arrangement of objects in an image 1. Average local intensity; 2. Average size of similar objects; 3. Local density of the objects;

17. Automatic Generation Algorithm of Chinese Character David Marr's “Vision” investigates the spatial arrangement of objects in an image 4. Local orientation of the objects; 6. Local orientation associated with the spatial arrangement of similar objects.

18. Automatic Generation Algorithm of Chinese Character David Marr's “Vision” investigates the spatial arrangement of objects in an image 4. Local orientation of the objects; 6. Local orientation associated with the spatial arrangement of similar objects.

19. Automatic Generation Algorithm of Chinese Character David Marr's “Vision” investigates the spatial arrangement of objects in an image 5. Local distances associated with the spatial arrangement of similar objects;

20. Automatic Generation Algorithm of Chinese Character David Marr's “Vision” investigates the spatial arrangement of objects in an image 5. Local distances associated with the spatial arrangement of similar objects;

21. Automatic Generation Algorithm of Chinese Character

22. Step 1: Input prior information of target character and absent radicals. Step 2: If all radicals to compose the character exist, then turn to Step 4. Step 3: Compose the absent radicals using the Bayesian dynamic models, similar to (11)~(14). Step 4: Compose the target character using the Bayesian dynamic models. Step 5: Output the target character.

23. Experiments and Discussion

26. 谢 谢 ！ http://www.icst.pku.edu.cn 谢 谢 ！ http://www.icst.pku.edu.cn