.
Animating Chinese Paintings Through Stroke-Based Decomposition
Songhua Xu, Ying-Qing Xu, Sing Bing Kang, David H. Salesin, Yunhe Pan, Heung-Yeung Shum.
ACM Transactions on Graphics, Vol. 25, No. 2, pp. 239--267,
2006. [BibTeX]
Artistic Image Generation by Deviation Mapping
Liu Wenyin, Xin Tong, Ying-Qing Xu, Heung-Yeung Shum, Zhong Hua.
International Journal of Image and Graphics, Vol. 1, No. 4, November,
2001. [BibTeX]
Color Sketch Generation
Fang Wen, Qing Luan, Lin Liang, Ying-Qing Xu, Heung-Yeung Shum.
NPAR '06: Proceedings of the 4th international symposium on Non-photorealistic animation and rendering, pp. 47--54, New York, NY, USA, ACM Press,
2006. [BibTeX]
Example-based Automatic Portraiture
Hong Chen, Lin Liang, Ying-Qing Xu, Heung-Yeung Shum, Nan-Ning Zheng.
The 5th Asian Conference on Computer Vision (ACCV2002), Melbourne, Australia, 23–25 January,
2002. [BibTeX]
Example-Based Caricature Generation with Exaggeration
Lin Liang, Hong Chen, Ying-Qing Xu, Heung-Yeung Shum.
10th Pacific Conference on Computer Graphics and Applications (PG'02), pp. 386, October 09 - 11,
2002. [BibTeX]
Example-Based Composite Sketching of Human Portraits
Hong Chen, Ziqiang Liu, Chuck Rose, Ying-Qing Xu, Heung-Yeung Shum, David H. Salesin.
3rd International Symposium on Non-Photorealistic Animation and Rendering (NPAR'04),
2004. [BibTeX]
Example-based Facial Sketch Generation with Non-parametric Sampling
Hong Chen, Ying-Qing Xu, Heung-Yeung Shum, Song-Chun Zhu, Nan-Ning Zheng.
International Conference on Computer Vision 2001 (ICCV'2001), pp. 433--438,
2001. [BibTeX]
PicToon: A Personalized Image-based Cartoon System
Hong Chen, Lin Liang, Yan Li, Ying-Qing Xu, Heung-Yeung Shum.
Proceedings of the tenth ACM international conference on Multimedia (MULTIMEDIA '02), pp. 171--178, December,
2002. [BibTeX]
Simulating Artistic Brushstrokes Using Interval Splines
Sara L. Su, Ying-Qing Xu, Heung-Yeung Shum, Falai Chen.
Proceedings of CGIM 2002, Kauai, HI, August,
2002. [BibTeX]
Speech-Driven Cartoon Animation with Emotions
Author(s): Yan Li, Feng Yu, Ying-Qing Xu, Eric Chang, Heung-Yeung Shum.
Proceedings: ACM Multimedia, pp. 365--371, Ottawa, Canada, Sep-Oct,
2001.
[BibTeX] 
Abstract:
In this paper, we present a cartoon face animation system
for multimedia HCI applications. We animate face cartoons
not only from input speech, but also based on emotions derived
from speech signal. Using a corpus of over 700 utterances
from different speakers, we have trained SVMs (support
vector machines) to recognize four categories of emotions:
neutral, happiness, anger and sadness. Given each
input speech phrase, we identify its emotion content as a
mixture of all four emotions, rather than classifying it into a
single emotion. Then, facial expressions are generated from
the recovered emotion for each phrase, by morphing different
cartoon templates that correspond to various emotions. To
ensure smooth transitions in the animation, we apply lowpass
filtering to the recovered (and possibly jumpy) emotion
sequence. Moreover, lip-syncing is applied to produce the
lip movement from speech, by recovering a statistical audiovisual
mapping. Experimental results demonstrate that cartoon
animation sequences generated by our system are of
good and convincing quality.