| Title: | Efficient Wavelet Construction With Catmull-Clark Subdivision |
| Date: |
October 10, 2006 (Tuesday)
|
| Time: |
4:00 p.m. - 5:00 p.m.
|
| Venue: |
Room 121, 1/F, Ho Sin-hang Engineering Building,
The Chinese University of Hong Kong, Shatin, N.T. |
| Speaker: |
Professor Qin, Kaihuai
Department of Computer Science & Technology Tsinghua University Beijing, China |
This talk presents an efficient biorthogonal wavelet construction with the generalized Catmull-Clark subdivision based on the lifting scheme. The subdivision-wavelet construction scheme is applicable to all variants of Catmull-Clark subdivision, so it is more universal than the previous wavelet construction for the generalized bicubic B-spline subdivision. Because the analysis and synthesis algorithms of the wavelets are composed of a series of local and in-place lifting operations, they can be performed in linear time. The experiments have demonstrated the stability of the proposed wavelet analysis based on the ordinary Catmull- Clark subdivision. Moreover, the resulting Catmull-Clark subdivision wavelets have better fitting quality than the generalized bicubic B-spline subdivision wavelets at a similar computation cost.
BIOGRAPHY:
Prof. Qin, Kaihuai is the full professor at Dept. of Computer Science & Technology, Tsinghua University since 1998. He received a M.Sc. in CAD/CAM (1984) and a Ph.D in integrated CAD/CAM (1990) from Huazhong University of Science & Technology HUST. Prof. Qin has published more than 90+ refereed technical papers in journals and international conferences including the Visual Computer, Computers & Graphics, Computer Aided Geometric Design, International journal of CAD/CAM, International Journal of Computational Geometry and Applications, Progress in Natural Science. His current research interests include geometric modeling, computer graphics, computational geometry, virtual reality, medical image processing, realistic rendering/animation.
Enquiries: Miss Temmy So at tel 2609 8444
For more information, please refer to http://www.cse.cuhk.edu.hk/seminar