| Title: | Feature-guided Image Stippling |
| Date: |
July 30, 2008 (Wednesday)
|
| Time: |
2:30 p.m. - 3:30 p.m.
|
| Venue: |
Room 121, 1/F, Ho Sin-hang Engineering Building,
The Chinese University of Hong Kong, Shatin, N.T. |
| Speaker: |
Prof. Seungyong Lee
Department of Computer Science and Engineering Pohang University of Science and Technology (POSTECH) Korea |
Non-photorealistic rendering (NPR) in general involves abstraction and stylization of 2D images and 3D scenes. In this talk, I will present an automatic method for producing stipple renderings from photographs, following the style of professional hedcut illustrations. For effective depiction of image features, we introduce a novel dot placement algorithm which adapts stipple dots to the local shapes. The core idea is to guide the dot placement along 'feature flow' extracted from the feature lines, resulting in a dot distribution that conforms to feature shapes. The sizes of dots are adaptively determined from the input image for proper tone representation. Experimental results show that such feature-guided stippling leads to the production of stylistic and feature-emphasizing dot illustrations.
BIOGRAPHY:
SEUNGYONG LEE is an associate professor of computer science and engineering at Pohang University of Science and Technology (POSTECH), Korea. He received his B.S. degree in computer science and statistics from Seoul National University in 1988 and his M.S. and Ph.D. degrees in computer science from Korea Advanced Institute of Science and Technology (KAIST) in 1990 and 1995, respectively. From 1995 to 1996, he worked at City College of New York as a post-doctoral research associate. Since 1996, he has been a faculty member of POSTECH, where he leads the Computer Graphics Group. From 2003 to 2004, he spent a sabbatical year at MPI Informatik, Germany, as a visiting senior researcher. His current research interests include 3D mesh processing, non-photorealistic rendering, image and video processing, 3D surface reconstruction, and graphics applications.
Enquiries: Miss Temmy So at tel 2609 8444
For more information, please refer to http://www.cse.cuhk.edu.hk/seminar