B.Sc.(CUHK), M.Sc., Ph.D.(Loughborough), CEng., MHKIE, SrMIEEE
Email: wkcham@ee.cuhk.edu.hk
Telephone: +852 2609-8281 Fax: +852 2603-5558
Wai-kuen Cham graduated from The Chinese University of Hong Kong in 1979 in Electronics. He received his M.Sc. and Ph.D. degrees from Loughborough University of Technology, U.K., in 1980 and 1983 respectively. His research work was on image coding and in close collaboration with British Telecom. From June 1984 to April 1985, he was a senior engineer in Datacraft Hong Kong Limited and a lecturer in the Department of Electronic Engineering, Hong Kong Polytechnic (now The Polytechnic University of Hong Kong). Since May 1985, he has been with the Department of Electronic Engineering, the Chinese University of Hong Kong.
Prof. Cham's research interests include image and video signal processing and face recognition. He has published over hundred papers in international journals and proceedings of major conferences and is the inventor of a number of patents. Prof. Cham has acted as a consultant to a number of government and industrial organizations, such as the Hong Kong Consumer Council, Grace Everett Ltd, COMedia HK Ltd and Jet Propulsion Laboratory, NASA. He is the inventor of the Integer Cosine Transform which was used in the NASA Galileo space mission and is adopted in the international video coding standard H.264/AVC, VC-1 and the national standard of China AVS (Audio Video Coding Standard). Prof. Cham is a Chartered Engineer and a senior member of IEEE.
Digital Signal Processing, Image Coding, Image Processing, Video Segmentation, Edge-model-based Image Processing
Image superresolution, Facial Feature Extraction and Face Recognition.
Recipient of The Exemplary Teaching Award 2000 of the Engineering Faculty
Subjects taught in 2008/2009
Member of Program Committee for International Conference on Image and Signal Processing ICISP'08, in Cherbourg, Normandy France, July 1-3, 2008.
Member of the International Program Committee, International Conference on Signal Processing, Pattern Recognition and Applications (SPPRA 2008), Innsbruck, Austria, February 13-15, 2008.
Member of the International Program Committee, International Conference on Signal Processing, Pattern Recognition and Applications (SPPRA 2009), Innsbruck, Austria, February 17-19, 2009.
Member of International Program Committee for International Conference on Signal Processing and Multimedia Applications (SIGMAP 2009), Milan, Italy, July 7-10, 2009.
Member of the Steering Technical Committee, IEEE Pacific-Rim Conference on Multimedia (PCM), University of Victoria, Victoria, B.C., Canada, August 23-26, 2009.
Technical Program Chair, 2010 International Conference on Image Processing (ICIP2010), Hong Kong, 12-15 December 2010.
Journal
Cham,W.K., 'Development of Integer Cosine Transforms by the Principle of Dyadic Symmetry',*1 IEE Proceedings Part I, Vol.136, No.4, August 1989, pp.276-282.
Cham,W.K., Chan,Y.T., 'An Order-16 Integer Cosine Transform',*2 IEEE Trans. on Signal Processing, Vol.39, No.5, May 1991, pp.1205- 1208.
Fan,G.L., Cham,W.K., 'Model-based edge reconstruction for low bit-rate wavelet compressed images',*3 IEEE Trans. CAS VT, Vol.10, No.1, February 2000, pp.120-132.
Fan, G.L., Cham, W.K. ‘Postprocessing of Low Bit-rate Wavelet-based Image Coding using Multiscale Edge Characterization,’*4 IEEE Trans. CAS VT, Vol.11, No. 12, December, 2001, pp.1263-1272.
Chen, Q., Yao, J., Cham, W.K., ' 3D Model Based Pose Invariant Face Recognition from a Single Frontal View,’ Electronic Letters on Computer Vision and Image Analysis, Vol.6, No.1, 2007, pp.13-26.
Chen, Q., Cham, W.K., Lee, K.K, ‘Extracting Eyebrow Contour and Chin Contour for Face Recognition,’ Pattern Recognition, Vol.40, Issue 8, August 2007, pp. 2292-2300.
Yao, J., Cham, W.K., ' Robust Multi-view Feature Matching from Multiple Unordered Views,’ Pattern Recognition, Vol.40, No. 11, November 2007, pp.3081-3099.
Sun, D.Q., Cham, W.K., 'An Effective Postprocessing Method for Low Bit Rate Block DCT Coded Images,’*5 IEEE Trans. Image Processing, Vol.16, No.11, November 2007, pp.2743-2751.
Zhang, Ci-Xun, Yu, L., Lou, J., Cham, W.K., Dong J.,' The Technique of Pre-scaled Integer Transform: Concept, Design and Applications,' IEEE Trans. CASVT, Vol.18, No.1, January 2008, pp.84-97.
Mak, C.M., Fong, C.K., Cham, W.K., ' Fast Motion Estimation for H.264/AVC in Walsh Hadamard Domain,’ IEEE Trans. CASVT, Vol.18, No.6, June 2008, pp.735-745.
Zhang, R., Ouyang, W., Cham, W.K., ' Image Edge Detection Using Hidden Markov Chain Model Based on the Non-decimated Wavelet,’ International Journal of Signal Processing, Image Processing and Pattern, Vol.1, No.2, March 2009, pp.109-117.
Dong, J., Ngan, K.N., Fong, C.K., Cham, W.K. , ' 2D Order-16 Integer Transforms for HD Video Coding,’ accepted for publication in IEEE Trans. CASVT.
Ouyang, W.L., Cham, W.K., ' Fast Algorithm for Walsh Hadamard Transform on Sliding Windows,’ accepted for publication in IEEE Trans. PAMI. (MATLAB code of the proposed fast algorithm)
Note:
*1. © 1989 IET. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from IET.
*2. © 1991 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from IEEE.
*3. © 2000 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from IEEE.
*4. © 2001 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from IEEE.
*5. © 2007 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from IEEE.
Conference
Zhang, W., Cham, W.K., ' Learning-based Face Hallucination in DCT Domain,' Proceedings of IEEE Conference on Computer Vision and Pattern Recongnition (CVPR), Alaska, USA, June 24-26, 2008, pp.1-8.
Zhang, W., Cham, W.K., ' A Single Image Based Blind Super-resolution Approach,' Proceedings of 2008 IEEE International Conference on Image Processing, San Diego, USA, October 12-15, 2008, pp.329-332.
Zhang, Renqi, Ouyang, Wanli, Cham, W.K, ' Image Deblocking using Dual Adaptive FIR Wiener Filter in the DCT Transform Domain, ' Proceedings of ICASSP 2009, Taiwan, April 19-24, 2009, pp.1181-1184.
Zhang, Renqi, Ouyang, Wanli, Cham, W.K, ' Image Multi-scale Edge Detection using 3-D Hidden Markov Model based on the Non-decimated Wavelet, ' accepted for presentation in IEEE International Conference on Image Processing (ICIP), November 2009, Egypt.
Zhang, W., Cham, W.K., 'Single Image Focus Editing,' accepted for presentation in ICCV workshop on Color and Reflectance in Imaging and Computer Vision (CRICV), October 4, 2009, Kyoto, Japan.
Zhang, Renqi, Fong, Y.L., Cham, W.K, ' Image Deblocking by the Dual Adaptive FIR Wiener Filter and Overcomplete Representation, ' accepted for presentation in ICICS, 2009, Macau, China.
Nicol,R.C., Fenn,B.A., Clarke,R.J., Ngan,K.N., Cham,W.K., 'Method and Apparatus for Transmitting an Image, Priority: GB/22.07.81/ GB 8122640, European Patent Office Patent No. 82303825.2.
Cham,W.K., Clarke,R.J., Nicol,R.C., 'Image Transmission', Priority:GB/14.10.82/ GB 8229420, European Patent Office Patent No. 83306067.6.
Yu, L., Cham, W.K., Lou, J., A pending patent application with Zhejiang University, ‘图象和视频信号变换装置及其方法’. Chinese Patent Application Number: 200410015637.4. The work was accepted as a part of the Audio Visual Coding Standard (AVS).
Cham, W.K., Fong, C.K., A pending patent application, ‘离散余弦变换信号与整数余弦变换信号间的信号转换方法’. Chinese Patent Application Number: 200410071003.0
Cham, W.K., Fong, C.K., A pending patent application, ‘视频信号的编码系数的转换装置及其方法’. Chinese Patent Application Number: 200510134530.6
CHAM, W.K., FONG C.K., DONG J., NGAN, K.N., WONG, H.M., WANG, L., HUO, Y., PUN, H.Y., ‘METHOD AND DEVICE FOR ORDER-16 INTEGER TRANSFORM FROM ORDER-8 INTEGER COSINE TRANSFORM’, US Non-Provisional Patent Application Number 11/950,182, filed on December 4, 2007.
Cham, W.K., Fong, C.K., ‘PROCESSES AND APPARATUS FOR DERIVING ORDER-16 INTEGER TRANSFORMS’, US Non-Provisional Patent Application Number 12/100,358, filed on April 9, 2008.
Cham, W.K., Fong, C.K., ‘METHODS AND APPARATUS FOR DERIVING AN ORDER-16 INTEGER TRANSFORM’, US Non-Provisional Patent Application Number 12/103,676, filed on April 15, 2008.
Cham, W.K., Fong, C.K., ‘DEVICES AND METHODS FOR TRANSFORMING CODING COEFFICIENTS OF VIDEO SIGNALS’, US Non-Provisional Patent Application Number 12/096,531, filed on June 6, 2008.
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