Professor
Department of Electronic and Computer Engineering
Hong Kong University of Science and Technology (HKUST)
Clear Water Bay, Hong Kong, China.
Director,
Multimedia Technology
Research Center (MTrec), HKUST
Director, Computer Engineering (CPEG) Program, HKUST
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My main research interests are on multimedia signal processing. In particular, coding and processing of both video and image, watermarking and light weight encryption, speech and audio processing. Research topics include fast motion estimation for MPEG-1/2/4, H.261/3/4 and AVS standards, optimal and fast sub-optimal rate control, mode decision, transcoding, denoising, deinterlacing, post-processing, multi-view coding, scalable video coding, distributed video coding, subpixel rendering, JPEG/JPEG2000, HDR imaging, compressive sensing, halftone image data hiding, GPU-processing, software-hardware co-design, etc.
On the audio/speech side, I worked on speech characterization, speech recognition, acoustic modeling, robust recognition, channel/speaker adaptation, speaker identification and verification, variable speed audio/speech playback, time/frequency scale modification.
IEEE Trans. on Circuits and Systems for Video Technology (TCSVT), Associate Editor, 2006-present.
IEEE Trans. on Image Processing (TIP), Associate Editor, 2008-present.
IEEE Trans. on Circuits and Systems - Part 1 (TCAS1), Associate Editor, 2002-2003.
Journal of Signal Processing Systems (JSPS), Editorial Board, 2008-present.
Journal of Multimedia (JMM), Editorial Board, 2006-present.
Journal of Franklin Institute (JFI), Editorial Board, 2007-present.
IEEE Trans. on Multimedia (TMM), Steering Committee, 2004-2006.
IEEE International Conference on Multimedia and Expo (ICME), Steering Committee, 2002-2003, 2007-2008, 2010-2011.
Technical Committee (TC) on Multimedia Systems and Applications (MSATC), IEEE CAS Society, member/Secretary/Chairman, 1995-present.
Technical Committee on Visual Signal Processing and Communications (VSPC), IEEE CAS Society, member, 1999-present.
Technical Committee on Digital Signal Processing (DSP), IEEE CAS Society, member, 2004-present.
Technical Committee on Multimedia Signal Processing (MMSP), IEEE SP Society, member, 2009-present.
Technical Committtee on Image, Video and Multi-dimensional Signal Processing (IVMSP), IEEE SP Society, 2009-present.
Technical Committee on Multimedia Communications (MMTC), IEEE Communication Society, 2009-present.
Our patented fast motion estimation tool (PMVFAST) accepted into MPEG-4 international standard (ISO/IEC 14496-7) in 2000.
Our patented motion estimation tool (ePMVFAST), light-weight encryption tool and L-block error resilience tool were accepted into China AVS standard, in 2006, 2008 and 2009 respectively.
SiPS 2007 Best Paper Award for the paper “L Guo, OC Au, M Ma, Z Liang, Fast Multi-Hypothesis Motion Compensated Filter for Video Denoising, IEEE Workship on Signal Processing Sysetms (SiPS), Shanghai, China, Oct. 2007.”
PCM 2007 Best Paper Award for the paper “Z Liang, J Zhou, L Guo, M Ma, OC Au, A Novel Multiple Description Approach to Predictive Video Coding, Pacific-Rim Conference on Multimedia (PCM), Hong Kong, China, Dec 2007.”
IEEE Distinguished Lecturer (DLP), CAS Society, 2009-2010.
A keynote speaker in IEE 2nd Mobility Conference (Mobility 2005), Nov. 2005, Guangzhou, China on "On Mobile Multimedia Technology – Past, Present and Future".
A keynote speaker in KES Conf. on Intelligent Information Hiding and Multimedia Signal Processing (IIHMSP), Sept. 2005, Melbourne, Australia, on "Wireless Multimedia Technology".
A keynote speaker in 2nd International Conference on Internet Multimedia Computing and Service, 30-31 Dec. 2010, Harbin, China, on "Can we get more than 1-pixel resolution out of 1 pixel?".
A tutorial speaker (with Fernando Pereira) in IEEE Int. Conf. on Multimedia and Expo (ICME), Beijing, China, July 2007 on "MPEG Multimedia Standards: Evolution and Recent Developments".
A tutorial speaker in IEEE Conf. on Intelligent Information Hiding and Multimedia Signal Processing (IIHMSP), Pasadena, CA, USA, Dec. 2006, on "Video Coding Standards (MPEG-1/2/4, H.261/3/4, AVS)".
IEEE International Conference on Multimedia and Expo (ICME), Jun. 2010, Singapore. General Co-Chair.
Packet Video Workshop (PV), Dec. 2010, Hong Kong, China. General Co-Chair.
IEEE Workshop on Emerging Multimedia Circuits and Systems Technologies, July 2009, New York, USA. General Co-Chair.
Pacific-Rim Conference on Multimedia (PCM), Dec. 2007, Hong Kong, China. General Co-Chair.
71th ISO/IEC MPEG International Standard Meeting, Jan 2005, Hong Kong, China. General Chair of Organization Committee.
Workshop on MPEG International Video and Audio Standards, Jan 2005, Hong Kong, China. General Chair.
Workshop on Next Generation Multimedia Technology for Mobile Communication, Nov. 2005, Hong Kong, China. General Chair.
Symposium on AVS Video Compression Standard for 3G, Mar 2004, Shenzhen, China. General Co-Chair.
Published 281 journal and conference papers. Cited 1650 times according to Google Scholar. (full list)
Contributed 26 papers to standards MPEG and China AVS. (full list)
Filed 66 US patents, 6 PCT patenst, 5 China patents, 1 Hong Kong patents. 4 US patents granted.
Selected as top 5 achievements in HKUST's first 10 years.
Successfully led or played a significant role in over HK$71M worth of research grants in 44 projects in the multimedia signal processing area.
Supervised 23 PhD and 50 MPhil students. (including 16 PhD and 9 MPhil students in progress)
Conducted projects with many technology companies, including AnTech, ASTRI, China Mobile Peoples Telephone, CSL, Hong Kong Broadband, Huawei, Hutchison , Nokia, Philips, SenseStream, Smartone, VP Dynamics, WebEx, etc.
Performed forensic examinations and stood as expert witness multiple times.
Served on Technology Review Committee for ASTRI, ITC and HKUST.
Served on organizing committee of many conferences, including ISCAS 1997, ICASSP 2003, ACM Multimedia 2008, PV 2009, ICIP 2010, etc.
Served on Technical Program Committee 85 times in 39 conferences.
Appeared 70 times in media (newspaper, radio, TV, magazine, news webpage).
Exhibited 13 times in trade fairs and exhibitions.
Reviewed papers for 25+ journals.
Taught short courses and gave public seminars many times.
Supervised 186 final year project students in 69 projects. Won 3 awards.
Board of Governor (BoG) of APSIPA. Senior member of IEEE. Member of SMPTE, and AES.
Accepted as Member of Toronto Mendelsonn Youth Choir (TMYC) in Toronto, 1982. Presented in Roy Thomson Hall in Toronto. Member of high school choir, 1976 – 1981. Member of church choirs, 1983 – present.
Received the Teaching Excellence Appreciation Award, School of Engineering, Hong Kong University of Science and Technology, 1998.
Received the J. Edgar McAllister Undergraduate Summer Research Fellowship in University of Toronto, 1985.
Awarded the J.W. Billes Admission Scholarship for pursuing undergraduate study in University of Toronto, 1984-1986
Awarded the Open Admission Scholarship for pursuing undergraduate study in University of Toronto, 1982-1984.
Awarded the 5-year Government High School Admission Scholarship for pursuing secondary school education in the Kowloon Technical School in Hong Kong, 1976-1980.
Awarded Chinese Manufacturer’s Association Scholarship in Hong Kong, 1978.