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 CHENG, Lee-Ming
B.Sc., Ph.D. London, CEng CITP, FIE

 Associate Professor 

Room: G6404 Tel: (852) 3442-7778 Fax: (852) 2784-4294   Email: 

Dr. Cheng was born in Hong Kong. He graduated from the Salesian English School where he was awarded many academic prizes. He left Hong Kong in 1976 and studied in the UK. Dr. Cheng received his B.Sc. degree in Physics and Computer Science and his PhD from King's College London (formerly Queen Elizabeth College), University of London in 1979 and 1982 respectively under the supervision of Professor Ronald E Burge who was a student of notable physicist Professor John T Randall. Dr Cheng has been awarded a Dillon Prize, a Britt Junior Scholarship and a University of London Scholarship for his PhD studies. From 1982 to 1984, he was employed as a research fellow at King's College, London.

 In September 1984, he was Principal Engineer of ERA Technology Ltd., an independent research and consultancy organization in Electrical and Electronic Engineering in Leatherhead UK and has been participated in Falkland Mine Clearance Field Trial. From August 1987, Dr. Cheng was Project Manager and Senior Consultant of Logica Space and Defense Systems Ltd. UK in Cobham in charge of a number of secret military research and pre-production projects in surveillance areas and develop systems with NATO codification.

He joined City University of Hong Kong in September 1989 and is now Associate Professor of the Department of Electronic Engineering. He was also the team leader of Computer Engineering Group from 2005-2011. He received his Teaching Excellent Award from CityU and Excellent Paper Award from CAST Young Scientist Conference in 1995. He received an Innovator Award by EDN in Jan 1997, a Certificate of Merit from City University Applied Research Excellent Award in 1998 and a Certificate of Merit from Chinese International Invention Expo'98. He is the founder and CEO of MaCaPS International Limited and was Director and Technical Consultant/Scientific Advisor to a number of technology and listed companies in Hong Kong. He is an expert in security, smart card and RFID technologies and has published over 2 book in block cipher, 4 book chapters, 140 technical papers, 14 Patents and 1 Patent Pending and over 20 classified publications.


Dr Cheng is very active in the professional services. He has been servicing IEE Hong Kong Executive Committee for over 15 years. He was the past Honorary Secretary and Chairman of the Executive Committee. He was Vice President, Assistant Honorary Secretary and Council Member of the Hong Kong Association of Advancement of Science and Technology; Vice President & Founding Member of Innovation & Technology Association; Council Member of HKIT Joint Council; member of IT Committee of Federation of HK Industries, advisor of HK New Generation Culture Association, Judge of Youth Innovation and Technology Competition, Judge of HK ICT Award, Project Reviewer of Hong Kong ASTRI and director of Professional Validation Council Hong Kong Industries. He was also a member of 2nd Election Committee (IT sector) and is a HKSAR ACCOP Committee Member. He is now still serving as Chairman of Hong Kong New Generation Cultural Association, Vice President of University Credit Union and Credit Union League of Hong Kong. He is also an elected District Councilor of Kowloon City District 2012-15.



Security Encoding, Card Technology,  Digital Right Management and Digital Watermarking, RFID, Security Technology, Encryption, Optical Computing & Signal Processing, System Engineering, Artificial Neural Network and image processing.

Research and Industrial Grant awarded: Smart Card Design Centre (HK$12 Millions (PI)), RFID Reader Design and Fabrication (HK$5 Millions (CI)), Smart Card Technology Services (HK$2.0 Millions (PI)), HK$0.6 Millions (PI) in RNG Chip and Java Card OS and HK$0.6 Millions (CI) in ECC smart card implementation, Digital Watermarking Chip Fabrication (HK$3 Millions (PI)); and  Video Watermarking Chip Design, HK$0.6 Million, RFID applications in Logistic Management for Shenzhen Special Economic Zone (RMB $400,000 as Co-PI).





F. Liu, L.M. Cheng, “Wave atom-based Perceptual Image Hashing Against Content-Preserving and Content Altering Attacks”, Transactions on Data Hiding and Multimedia Security, pp. 21-37, 2015, DOI:10.1007/978-3-662-46739-8_2


H.Y. Leung, L.M. Cheng, F Liu, Q.K. Fu Adaptive Reversible Data Hiding based on Block Median Preservation and Modification of Prediction ErrorsJournal of Systems and Software, Vol. 86, Iss. 8, Aug 2013, pp 2204-2219. DOI: 10.1016/j.jss.2013.04.020. [COMPUTER SCIENCE, THEORY & METHODS 30/100 , IF= 1.135, Q2]


H.Y. Leung, L.M. Cheng and F Liu, “Robust Digital Image Watermarking Scheme using Wave Atoms with Multiple Description Coding” EURASIP Journal on Advances in Signal Processing, in press 2012. [ENGINEERING, ELECTRICAL & ELECTRONIC ranking 132/245, IF=0.885, Q3]


F. Liu, L.M. Cheng, H.Y. Leung, Q.K. Fu, “Wave Atom Transform Generated Strong Image  Hashing Scheme”, Optics Communications, in press 2012. [OPTICS ranking 35/77, IF = 1.486, Q2]


F. Liu, Q.K. Fu,, L.M. Cheng  “Wave Atoms Based Multipurpose Scheme via Perceptual Image  Hashing and Watermarking”, Applied Optics, F. Liu, Q.K. Fu,, L.M. Cheng  “Wave Atoms Based Multipurpose Scheme via Perceptual Image  Hashing and Watermarking”, Applied Optics, Vol. 51, Issue 27, pp. 6561-6570 (2012) [OPTICS ranking 25/77, IF = 1.748, Q2]


H. Y. Leung, L. M. Cheng, X.Y. Li “A FPGA implementation of facial feature extraction”, Journal of Real-Time Image Processing, 2012, doi: 10.1007/s11554-012-0263-8 [IMAGING SCIENCE & PHOTOGRAPHIC TECHNOLOGY ranking 9/21, IF = 1.02, Q2]


F. Liu, H.Y. Leung, L.M. Cheng, L M and X. Ji , "Content-based image hashing using wave atoms", Chinese Physics B, 21(4), 2012, p 040204, doi: 10.1088/1674-1056/21/4/040204. [PHYSICS, MULTIDISCIPLINARY  ranking 29/84, IF=1.376, Q2]


H. Y. Leung and L. M. Cheng, “Robust Watermarking Scheme Using Wave Atoms,” EURASIP Journal on Advances in Signal Processing, vol. 2011, Article ID 184817, 9 pages, 2011. doi:10.1155/2011/184817 [ENGINEERING, ELECTRICAL & ELECTRONIC ranking 132/245, IF=0.885, Q3]


HY Leung, LM Cheng, LL Cheng, "Robust Watermarking Schemes  using Selective Curvelet Coefficients based on HVS Model", International Journal of Wavelets Multiresolution and Information Processing, Vol. 8, No. 6 (2010) 941–959, Nov. 2010. [MATHEMATICS, INTERDISCIPLINARY APPLICATIONS ranking 34/80, IF=1.168, Q2]


H.Y. Leung, L.M. Cheng and L.L. Cheng, “A Non-Blind Curvelet Based Watermarking Algorithm”, Current Development in Theory and Application of Wavelets, Vol. 4, Issue 2, p. 89-108, Aug 2010.

EE4217: Storage Technology Course

EE4215: Security Technology Course

EE3207: Digital System Design

IT2201: Microprocessor & Assembly Prog. Lang.

MaCaPS International Limited <Power Point>

Smart Card Design Centre <Power Point>

RFID Research

Digital Right Management Research

My Publications

My Public Lectures

Useful Cryptographic Web-sites

BEng in Computer Engineering  Promotion Slide

EE6612 PowerPoint Video(HR) Video(LR) Easy Pay Video EasyRegister Video


My Personal Web

My Academic Genealogy



 Last updated: 1 Sep 2015