張國威博士 CHEUNG Kwok Wai, Keith
Dr CHEUNG Kwok Wai, Keith (張國威博士)
BEng (CityU HK)
MSc (CityU HK)
PhD (CityU HK)

Associate Professor
School of Communication
BA-CMCT Associate Programme Director

Tel : (852) 3963 5222


Dr Cheung worked in Hong Kong Telecom as trainee engineer/project engineer from 1990 to 1995. He was a research student/research assistant at the Department of Electronic Engineering, City University of Hong Kong, from 1996 to 2002. He taught at Department of Computer Science, Chu Hai College of Higher Education before joining School of Communication at Hang Seng Management College. Dr Cheung is a Chartered Engineer and Member of The Institution of Engineering and Technology.

Research InterestFunded Research ProjectsSelected Publications
TopResearch Interest

  • Image processing, video coding, multimedia database, and mobile computing.

TopFunded Research Projects

  • Accelerating Nonrigid Image Registration using local information measures and GPU implementation, RGC Grant (UGC/FDS13/E02/14), 2014 – 2016.

TopSelected Publications
  • Xu, X., Po, L.M., Cheung, C. H., Cheung, K. W., Feng, L., Ting, C. W., Ng, K. H. (2014). Adaptive depth truncation filter for MVC based compressed depth image. Signal Processing: Image Communication, 8 January 2014.
  • Xu, X. , Po, L.M., Ng, K. H., Feng, L., Cheung, K. W., Cheung, C. H., Ting, C. W. (2013). Depth map misalignment correction and dilation for DIBR view synthesis. Signal Processing: Image Communication, 22 April 2013.
  • Wong, K. M., Po, L. M., Cheung, K. W., Ting, C. W., Ng, K. H. and Xu, X. (2012). Horizontal Scaling and Shearing based Disparity Compensated Prediction," IEEE Trans. on Circuits and Systems for Video Technology, Vol. 22, No. 10, pp. 1457-1470, Oct. 2012.
  • Po, L. M., Wang, L., Feng, L., Ng, K. H., Cheung, K. W. (2012). Enhanced Adaptive Intra Mode Bit Skip For H.264/AVC. Proceeding of 2012 International Conference on Signal Processing, Communications and Computing, ICSPCC2012, Hong Kong, August 2012.
  • Po, L. M., Wong, K. M., Cheung, K. W., Ng, K. H. (2009). Subsampled Block-Matching for Zoom Motion Compensated Prediction. IEEE TCSVT, vol.20, no.11, Nov 2010.
  • Ng, K. H., Po, L. M., Wong, K. M., Ting, C. W. and Cheung, K. W. (2009). A Search Patterns Switching Algorithm for Motion Estimation. IEEE TCSVT, vol.19, no.5, May 2009.
  • Wong, K. M., Po, L. M., Cheung,  K. W. (2007). Dominant Color Structure Descriptor for Image Retrieval. Proceedings of International Conference on Image Processing 2007, vol. 4, pp. 365-369, 16-19 September 2007, San Antonio, USA.
  • Wong, K. M., Cheung, K. W. and Po, L. M. (2005). MIRROR: An Interactive Content Based Image Retrieval System. Proceeding of IEEE International Symposium on Circuits and Systems, Kobe, Japan, May 23-26, 2005.
  • Cheung, K. W. and Po, L. M. (2002). Tree-structured spatial coefficient partitioning for lossless wavelet image coding. IEE Proceedings - Vision, Image, and Signal Processing, Vol. 149, No. 6, pp. 365-369, Dec. 2002.
  • Cheung, K. W. and Po, L. M. (2002). Lossless Wavelet Image Coding using Layered Coefficient Partitioning. Proceeding of IEEE Proc. Int. Symp. Circuits, Syst., Scottsdale, Arizona, May 2002.
  • Cheung, K. W., Cheung C. H. and Po, L. M. (1999). A novel multiwavelet-based integer transform for lossless image coding.  Proc. IEEE Int. Conf. Image Processing, vol. 1, Kobe, Japan, Oct. 1999, pp.444-447.
  • Cheung, K. W. and Po, L. M. (1997). Low complexity 2D preprocessing for discrete multiwavelet transform of image signals. Electronics Letters, vol.33, no.12, pp. 1037-1039, 5th June 1997.