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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
Author(s): Hong Chen, Ying-Qing Xu, Heung-Yeung Shum, Song-Chun Zhu, Nan-Ning Zheng.
Proceedings: International Conference on Computer Vision 2001 (ICCV'2001), pp. 433--438,
2001.
[BibTeX] 
Abstract:
In this paper, we present an example-based facial sketch
system. Our system automatically generates a sketch from
an input image, by learning from example sketches drawn
with a particular style by an artist. There are two key elements
in our system: a non-parametric sampling method
and a flexible sketch model. Given an input image pixel and
its neighborhood, the conditional distribution of a sketch
point is computed by querying the examples and finding
all similar neighborhoods. An “expected sketch image” is
then drawn from the distribution to reflect the drawing style.
Finally, facial sketches are obtained by incorporating the
sketch model. Experimental results demonstrate the effectiveness
of our techniques.
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]