A/Prof Wong Kok Sheik

Associate Head (Research)
School of IT

wong.koksheik@monash.edu
+603 5514 6090
Room 2-4-17
ORCID

Personal statement

Kok Sheik is an Associate Professor attached to the School of Information Technology at Monash University Malaysia. He received the B.S. and M.S. degrees in both Computer Science and Mathematics from Utah State University, USA, in 2002 and 2005, respectively. In 2009, he received the Doctor of Engineering degree from Shinshu University, Japan, under the scholarship of Monbukagakusho. He was with Multimedia University from 2009 to 2010, and University of Malaya from 2010 to 2016. His research interests include multimedia signal processing, data hiding, multimedia perceptual encryption, joint encryption and data-hiding method, as well as their applications. He is a senior member of IEEE and a member of APSIPA.

In 2015, his student’s thesis received the Best Ph.D thesis award from the IEEE Signal Processing Society, Malaysia Section. Dr. Wong served as an associate editor for the Malaysian Journal of Computer Science from 2013 to 2017. Currently, he serves as an associate editor of the Journal of Information Security and Applications (JISA) and IIEEJ Transactions on Image Electronics and Visual Computing.

Academic degrees

  • Doctor of Philosophy in Engineering, Shinshu University, 2009
  • Master in Computer Sciences, Utah State University, USA, 2005
  • Master in Mathematics, Utah State University, USA, 2004
  • Degree in Computer Science and Mathematics, Utah State University, USA, 2002

Professional affiliations

Member of International Professional Bodies

  • IEEE Computer Society

Member of National Professional Bodies

  • Malaysian Image Analysis and Machine Intelligence Association

Research Interests

My research aims at the design, analysis, and delivery of the underlying mechanisms in realizing security features in multimedia content. The multimedia contents include audio, image and video, focusing on compressed contents compliant to certain ISO standards. Both interpretations of data hiding are considered, where the first interpretation refers to the actual action of inserting data into a content (commonly known as watermarking), while the second interpretation masks the perceptual meaning / semantic of the content (commonly known as cryptography). In a 5-year high impact research project, my team was working on the unification of watermarking and encryption, which produced various publication, PhD / MSc students, a few patents (filed) as well as forging many collaborative networks with local and international partners. Recently, I started to venture into information recovery in visual content, smart grid, as well as signal processing in the encrypted domain. My career goals including building up a team of competent researchers in the field of multimedia signal processing and lifting the technical level of our local / regional research community.

Research Projects

Recovery of missing coefficients - fundamentals to applications

In many compression standards including JPEG and MPEG families, a lossy compressed content underwent a processing pipeline with 3 main stages, namely, transformation, quantization, and entropy coding. Each of these stages is already well researched in the multimedia content coding community. This project departs from the traditional processing pipeline, where selected coefficients are first removed to reduce storage space during encoding, and the removed coefficients are recovered through prediction during decoding. Specifically, the missing coefficients are modelled to satisfy certain constrains including range of pixel values and small variance value. Potential solutions are then found by method of linear programming. The proposed framework will be further refined to realize the following applications: (a) data insertion, (b) selective encryption, and (c) joint encryption and data insertion. The outcome of this project will directly impact the volume, security, and of data communicated across networks, which can then contribute in reducing cyber-crimes such fraud, fake news, identity theft, and content forgery while promoting privacy.

Innovative High Dynamic Range Imaging - from Information Hiding to Its Applications

This project aims to enhance the current state-of-the-art encoding standard to achieve some security features such as tamper detection and privacy protection as well as adaption of bitstream to different display devices with different capabilities. It embarks on the following objectives:

  1. To design a new unified information hiding technique for high dynamic range image
  2. To develop hierarchical quality coding scheme applicable for all dynamic range displays
  3. To design reversible mapping scheme from low to high dynamic ranges and vice versa.

Education

Unit Taught

FIT5144 - Research strategies and skills

FIT5143 - IT research methods

FIT2093 - Introduction to cyber security

FIT2014 - Theory of Computation

FIT2100 - Operating Systems

FIT6021 - Advanced research methods

Local grants

  • Recovery of missing coefficients - fundamentals to applications, Wong Kok Sheik, 2018 - 2020,  Ministry of Education, RM62,500
  • Innovative High Dynamic Range Imaging - from Information Hiding to Its ApplicationsWong Kok Sheik, June 2017 - Nov. 2019, Ministry of Science, Technology, and Innovations, RM146,000
  • Discovery of Unconventional Basis Vectors for Image/video CodingWong Kok Sheik, April 2018 - Dec. 2018, Eng-IT Collaborative Grant Scheme (Monash internal grant), RM18,000

International grants

  • IDENTITY - Multimedia Forensics and People IdentificationWong Kok Sheik, 2015 - 2019, Horizon 2020 - European Union funding for Research & Innovation, €2,000,000
  • Real Time Scalable Software Video Encoding and Its Applications Through Hi-Performance Computing, Wong Kok Sheik, 2014 - 2016, COMSTECH-TWAS Joint Research Grants Programme, USD10,000

Current supervision

PhD

Mahamat Moussa Abbas Ali 
Predicting Motivations of Actions in Computer Vision by implementing Physics & Psychology Theories
2018 - Present
Monash University Malaysia

Dong Xingbo 
How Secure Biometric Recognition Could Be Done?
2018 - Present
Monash University Malaysia

Chia Kai Lin 
calable coding for HDR image
2017 - Present
Monash University Malaysia

Yip Sook Chin (external supervision) 
Anomaly Detection Frameworks for Identifying Energy Theft and Meter Irregularities in Smart Grids
2015 - Present
Monash University Malaysia

Ali Moltajaei Farid 
Novel Approaches to Tracking Swarms of Robots
2016 - Present
Monash University Malaysia

Tesfahun Melese Yilma 
Health Information Seeking and Searching Behaviors among College Students: A Case from Two Developing Countries
2016 - Present
Monash University Malaysia

Pang Lie Lin (external supervision) 
Information hiding in Scalable Video Coding
2015 - Present
Monash University Malaysia

Masters

Masaya Moriyama (external supervision) 
Background / foreground separation in compressed video domain
2015 - Present
Monash University Malaysia

Dilshani Hansika Mallikarachchi 
Data Hiding in a Flying Ad-hoc Network (FANET)
2018 - Present
Monash University Malaysia

Completed supervision

PhD

Dr. Lim Wen Harn 
Bringing Order To User-Generated Content On The Web: Estimating User Expertise And Information Quality
2018
Monash University Malaysia

Dr. Liong Sze Teng 
A Study on Micro-Expression Recognition using Facial Strain
2017
University of Malaya

Dr. Minemura Kazuki 
Sketch – An Investigation into Feature Extraction in Compressed Domain
2017
University of Malaya

Dr. Tew Yiqi 
Video authentication in HEVC compressed domain
2016
University of Malaya

Dr. Vishnu Monn Baskaran 
Performance Enhancements for Ultra-high definition Multipoint Video Communication Systems
2016
Multimedia University

Dr. Somayeh Sadeghi 
A keypoint based copy-move forgery detection and localization in digital images
2015
University of Malaya

Dr. Ong Sim Ying 
A study on data insertion and scrambling for unified scalable information hiding
2015
University of Malaya

Dr. Mustafa S. Abdul Karim 
A Study on Data Embedding in Universal Domain
2015
University of Malaya

Masters

Zahra Moayed 
Tagging Multiple Messages Using Data Hiding
2012
University of Malaya

Reza Moradi Rad 
Unification of Data Embedding and Scrambling in Image
2014
University of Malaya

April Pyone Maung Maung 
Reversible Data Hiding in Video Container Format
2018
University of Malaya

Mohammad Mogharen Askarin 
Reduced Contact Lifting and Transplantation Attack of Latent Fingerprint
2018
University of Malaya

Local Award/Recognition/Exhibition/Stewardship

  • National Teaching Aid Competition - Sarawak Convention Bureau, 2012

International Award/Recognition/Exhibition/Stewardship

  • IEEE CES Service Award - IEEE Consumer Electronics Society, 2016
  • Best Paper Award  - Organizing committee of ICCE-TW 2016, 2016
  • IEEE CES Service Award - IEEE Consumer Electronics Society, 2015
  • Certificate of Appreciation - The Institute of Image Electronics Engineers of Japan, 2012
  • Best Paper Award (signal processing track) - Organizing committee of ISPACS, 2011

Journal

Chiew, Kang Leng; Tan, Choon Lin; Wong, Kok Sheik; Yong, Kelvin S.C.; Tiong, Wei King (2019) A new hybrid ensemble feature selection framework for machine learning-based phishing detection system, Information Sciences, (153-166), Volume: 484, Issue Number: 00200255, 10.1016/j.ins.2019.01.064

Baskaran, Vishnu Monn; Chang, Yoong Choon; Loo, Jonathan; Wong, Kok Sheik; Gan, Ming Tao (2018) Dominant speaker detection in multipoint video communication using Markov chain with non-linear weights and dynamic transition window, Information Sciences, (344-362), Volume: 463-464, Issue Number: 00200255, 10.1016/j.ins.2018.06.057,

Yip, Sook Chin; Tan, Wooi Nee; Tan, Chia Kwang; Gan, Ming Tao; Wong, Kok Sheik (2018) An anomaly detection framework for identifying energy theft and defective meters in smart grids, International Journal of Electrical Power and Energy Systems, (189-203), Volume: 101, Issue Number: 01420615, 10.1016/j.ijepes.2018.03.025

Askarin, Mohammad Mogharen; Wong, Kok Sheik; Phan, Raphael C.W. (2018) Planting attack on latent fingerprints, IET Biometrics, (396-404), Volume: 7, Issue Number: 20474938, 10.1049/iet-bmt.2016.0113

Tew, Yiqi; Wong, Kok Sheik; Phan, Raphael C.W.; Ngan, King Ngi (2018) Separable authentication in encrypted HEVC video, Multimedia Tools and Applications, (24165-24184), Volume: 77, Issue Number: 13807501, 10.1007/s11042-018-5611-7

Liong, Sze Teng; See, John; Phan, Raphael C.W.; Wong, Kok Sheik; Tan, Su Wei (2018) Hybrid Facial Regions Extraction for Micro-expression Recognition System, Journal of Signal Processing Systems, (601-617), Volume: 90, Issue Number: 19398018, 10.1007/s11265-017-1276-0

Liong, Sze Teng; See, John; Wong, Kok Sheik; Phan, Raphael C.W. (2018) Less is more: Micro-expression recognition from video using apex frame, Signal Processing: Image Communication, (82-92), Volume: 62, Issue Number: 09235965, 10.1016/j.image.2017.11.006

Riyono, Dwi; Sun, Chi Chia; Guo, Jing Ming; Wong, Kok Sheik (2018) A novel image descriptor based on dot-diffused block truncation coding with bit probability, Journal of Ambient Intelligence and Humanized Computing, Issue Number: 18685137, 10.1007/s12652-018-0963-4

Minemura, Kazuki; Wong, Koksheik; Phan, Raphael C.W.; Tanaka, Kiyoshi (2017) A Novel Sketch Attack for H.264/AVC Format-Compliant Encrypted Video, IEEE Transactions on Circuits and Systems for Video Technology, (2309-2321), Volume: 27, Issue Number: 10518215, 10.1109/TCSVT.2016.2589742

Ratnavelu, K.; Kalpana, M.; Balasubramaniam, P.; Wong, K.; Raveendran, P. (2017) Image encryption method based on chaotic fuzzy cellular neural networks, Signal Processing, (87-96), Volume: 140, Issue Number: 01651684, 10.1016/j.sigpro.2017.05.002

Ong, Sim Ying; Li, Shujun; Wong, Kok Sheik; Tan, Kuan Yew (2017) Fast recovery of unknown coefficients in DCT-transformed images, Signal Processing: Image Communication, (1-13), Volume: 58, Issue Number: 09235965, 10.1016/j.image.2017.06.002

Yip, Sook Chin; Wong, Kok Sheik; Hew, Wooi Ping; Gan, Ming Tao; Phan, Raphael C.W.; Tan, Su Wei (2017) Detection of energy theft and defective smart meters in smart grids using linear regression, International Journal of Electrical Power and Energy Systems, (230-240), Volume: 91, Issue Number: 01420615, 10.1016/j.ijepes.2017.04.005

Liu, Peizhong; Guo, Jing Ming; Tseng, Szu Han; Wong, Kok Sheik; Lee, Jiann Der; Yao, Chen Chieh; Zhu, Daxin (2017) Ocular Recognition for Blinking Eyes, IEEE Transactions on Image Processing, (5070-5081), Volume: 26, Issue Number: 10577149, 10.1109/TIP.2017.2713041

Minemura, Kazuki; Wong, Kok Sheik; Qi, Xiaojun; Tanaka, Kiyoshi (2017) A scrambling framework for block transform compressed image, Multimedia Tools and Applications, (6709-6729), Volume: 76, Issue Number: 13807501, 10.1007/s11042-016-3338-x

Sadeghi, Somayeh; Jalab, Hamid A.; Wong, Kok Sheik; Uliyan, Diaa; Dadkhah, Sajjad (2017) Keypoint based authentication and localization of copy-move forgery in digital image, Malaysian Journal of Computer Science, (117-133), Volume: 30, Issue Number: 01279084, 10.22452/mjcs.vol30no2.4

Tew, Yiqi; Wong, Kok Sheik; Phan, Raphael C.W.; Ngan, King Ngi (2016) Multi-layer authentication scheme for HEVC video based on embedded statistics, Journal of Visual Communication and Image Representation, (502-515), Volume: 40, Issue Number: 10473203, 10.1016/j.jvcir.2016.07.017

Buhari, Adamu Muhammad; Ling, Huo Chong; Baskaran, Vishnu Monn; Wong, Koksheik (2016) Fast watermarking scheme for real-time spatial scalable video coding, Signal Processing: Image Communication, (86-95), Volume: 47, Issue Number: 09235965, 10.1016/j.image.2016.06.003

Liong, Sze Teng; See, John; Phan, Raphael C.W.; Oh, Yee Hui; Cat Le Ngo, Anh; Wong, Kok Sheik; Tan, Su Wei (2016) Spontaneous subtle expression detection and recognition based on facial strain, Signal Processing: Image Communication, (170-182), Volume: 47, Issue Number: 09235965, 10.1016/j.image.2016.06.004

Rad, Reza Moradi; Wong, Kok Sheik; Guo, Jing Ming (2016) Reversible data hiding by adaptive group modification on histogram of prediction errors, Signal Processing, (315-328), Volume: 125, Issue Number: 01651684, 10.1016/j.sigpro.2016.02.001

Tan, Choon Lin; Chiew, Kang Leng; Wong, Kok Sheik; Sze, San Nah (2016) PhishWHO: Phishing webpage detection via identity keywords extraction and target domain name finder, Decision Support Systems, (18-27), Volume: 88, Issue Number: 01679236, 10.1016/j.dss.2016.05.005

Guo, Jing Ming; Hsia, Chih Hsien; Wong, Kok Sheik; Wu, Jing Yu; Wu, Yi Ting; Wang, Nai Jian (2016) Nighttime Vehicle Lamp Detection and Tracking with Adaptive Mask Training, IEEE Transactions on Vehicular Technology, (4023-4032), Volume: 65, Issue Number: 00189545, 10.1109/TVT.2015.2508020

Guo, Jing Ming; Tseng, Szu Han; Wong, Koksheik (2016) Accurate Facial Landmark Extraction, IEEE Signal Processing Letters, (605-609), Volume: 23, Issue Number: 10709908, 10.1109/LSP.2016.2543019

Abdullaziz, Osamah Ibrahiem; Goh, Vik Tor; Ling, Huo Chong; Wong, Kok Sheik (2016) AIPISteg: An active IP identification based steganographic method, Journal of Network and Computer Applications, (150-158), Volume: 63, Issue Number: 10848045, 10.1016/j.jnca.2015.10.019

Guo, Jing Ming; Prasetyo, Heri; Wong, Kok Sheik (2016) Halftoning-based Block Truncation Coding image restoration, Journal of Visual Communication and Image Representation, (193-197), Volume: 35, Issue Number: 10473203, 10.1016/j.jvcir.2015.12.016

Baskaran, Vishnu Monn; Chang, Yoong Choon; Loo, Jonathan; Wong, Kok Sheik (2015) Design and implementation of parallel video combiner architecture for multi-user video conferencing at ultra-high definition resolution, Multimedia Tools and Applications, (6589-6622), Volume: 74, Issue Number: 13807501, 10.1007/s11042-014-1907-4

Guo, Jing Ming; Lai, Guo Hung; Wong, Koksheik; Chang, Li Chung (2015) Progressive Halftone Watermarking Using Multilayer Table Lookup Strategy, IEEE Transactions on Image Processing, (2009-2024), Volume: 24, Issue Number: 10577149, 10.1109/TIP.2014.2387417

Abdul Karim, Mustafa S.; Wong, Koksheik (2015) Data embedding in random domain, Signal Processing, (56-68), Volume: 108, Issue Number: 01651684, 10.1016/j.sigpro.2014.08.037

Ong, Simying; Wong, Koksheik; Tanaka, Kiyoshi (2015) Scrambling-embedding for JPEG compressed image, Signal Processing, (38-53), Volume: 109, Issue Number: 01651684, 10.1016/j.sigpro.2014.10.028

Buhari, Adamu Muhammad; Ling, Huo Chong; Baskaran, Vishnu Monn; Wong, Koksheik (2015) Real-time high-resolution downsampling algorithm on many-core processor for spatially scalable video coding, Journal of Electronic Imaging, Volume: 24, Issue Number: 10179909, 10.1117/1.JEI.24.1.013025

Ong, Simying; Wong, Koksheik; Qi, Xiaojun; Tanaka, Kiyoshi (2015) Beyond format-compliant encryption for JPEG image, Signal Processing: Image Communication, (47-60), Volume: 31, Issue Number: 09235965, 10.1016/j.image.2014.11.008

Abdul Karim, Mustafa S.; Wong, Koksheik (2014) Data fusion in universal domain using dual semantic code, Information Sciences, (123-141), Volume: 283, Issue Number: 00200255, 10.1016/j.ins.2014.06.018

Rad, Reza Moradi; Wong, Koksheik; Guo, Jing Ming (2014) A unified data embedding and scrambling method, IEEE Transactions on Image Processing, (1463-1475), Volume: 23, Issue Number: 10577149, 10.1109/TIP.2014.2302681

Tew, Yiqi; Wong, Koksheik (2014) An overview of information hiding in H.264/AVC compressed video, IEEE Transactions on Circuits and Systems for Video Technology, (305-319), Volume: 24, Issue Number: 10518215, 10.1109/TCSVT.2013.2276710

Abdul Karim, Mustafa S.; Wong, Koksheik (2014) Universal data embedding in encrypted domain, Signal Processing, (174-182), Volume: 94, Issue Number: 01651684, 10.1016/j.sigpro.2013.06.014

Guo, Jing Ming; Prasetyo, Heri; Wong, Koksheik (2014) Vehicle verification using gabor filter magnitude with gamma distribution modeling, IEEE Signal Processing Letters, (600-604), Volume: 21, Issue Number: 10709908, 10.1109/LSP.2014.2311132

Ong, Simying; Wong, Koksheik; Tanaka, Kiyoshi (2014) A scalable reversible data embedding method with progressive quality degradation functionality, Signal Processing: Image Communication, (135-149), Volume: 29, Issue Number: 09235965, 10.1016/j.image.2013.09.001

Baskaran, Vishnu Monn; Chang, Yoong Choon; Loo, Jonathan; Wong, Koksheik (2013) Software-based serverless endpoint video combiner architecture for high-definition multiparty video conferencing, Journal of Network and Computer Applications, (336-352), Volume: 36, Issue Number: 10848045, 10.1016/j.jnca.2012.05.008

Por, Lip Yee; Wong, Koksheik; Chee, Kok Onn (2012) UniSpaCh: A text-based data hiding method using Unicode space characters, Journal of Systems and Software, (1075-1082), Volume: 85, Issue Number: 01641212, 10.1016/j.jss.2011.12.023

Wong, Koksheik; Tanaka, Kiyoshi; Takagi, Koichi; Nakajima, Yasuyuki (2009) Complete video quality-preserving data hiding, IEEE Transactions on Circuits and Systems for Video Technology, (1499-1512), Volume: 19, Issue Number: 10518215, 10.1109/TCSVT.2009.2022781

Wong, Koksheik; Tanaka, Kiyoshi (2009) Improvements of Steg Ermelc Steganographic Method Using Hybrid Recursive Matrix Encoding, Journal of the Institute of Image Electronics Engineers of Japan, (723-729), Volume: 38, Issue Number: 02859831, 10.11371/iieej.38.723

Wong, Koksheik; Tanaka, Kiyoshi (2008) Complete Video Quality Preserving Data Hiding in MPEG Domain with Reverse Zerorun Length Data Representation Scheme, Journal of the Institute of Image Electronics Engineers of Japan, (651-662), Volume: 37, Issue Number: 02859831, 10.11371/iieej.37.651

Wong, Koksheik; Tanaka, Kiyoshi (2008) A Data Hiding Method Using Mquant in MPEG Domain, Journal of the Institute of Image Electronics Engineers of Japan, (256-267), Volume: 37, Issue Number: 02859831, 10.11371/iieej.37.256

Wong, Kok Sheik; Qi, Xiaojun; Tanaka, Kiyoshi (2007) A DCT-based Mod4 steganographic method, Signal Processing, (1251-1263), Volume: 87, Issue Number: 01651684, 10.1016/j.sigpro.2006.10.014

Wong, Koksheik; Tanaka, Kiyoshi (2007) Multiple Messages Embedding Using DCT-based Mod4 Steganographic Method, Journal of the Institute of Image Electronics Engineers of Japan, (762-769), Volume: 36, Issue Number: 02859831, 10.11371/iieej.36.762

Book

Liong, Sze Teng; See, John; Wong, Koksheik; Phan, Raphael Chung Wei (2017) Automatic micro-expression recognition from long video using a single spotted apex, Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), (345-360), Volume: 10117 LNCS, Issue Number: 03029743, 10.1007/978-3-319-54427-4_26

Liong, Sze Teng; See, John; Phan, Raphael C.W.; Le Ngo, Anh Cat; Oh, Yee Hui; Wong, Kok Sheik (2015) Subtle expression recognition using optical strain weighted features, Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), (644-657), Volume: 9009, Issue Number: 03029743, 10.1007/978-3-319-16631-5_47

Minemura, Kazuki; Wong, Kok Sheik (2013) A rewritable data embedding in JPEG-XR compressed image with file size preservation, Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), (569-580), Volume: 8237 LNCS, Issue Number: 03029743, 10.1007/978-3-319-02958-0_52

Wong, Kok Sheik; Tanaka, Kiyoshi; Qi, Xiaojun (2006) Multiple messages embedding using DCT-based Mod4 steganographic method, Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), (57-65), Volume: 4105 LNCS, Issue Number: 03029743, https://www.scopus.com/record/display.uri?eid=2-s2.0-33751016051&origin=resultslist

Conference

Dong, Xingbo; Wong, Koksheik; Jin, Zhe; Dugelay, Jean Luc (2019) A Cancellable face template scheme based on nonlinear multi-dimension spectral hashing, 2019 7th International Workshop on Biometrics and Forensics, IWBF 2019, 10.1109/IWBF.2019.8739179

Dong, Xing Bo; Jin, Zhe; Wong, Koksheik (2019) A Generalized Approach for Cancellable Template and Its Realization for Minutia Cylinder-Code, 2018 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2018 - Proceedings, (908-915), 10.23919/APSIPA.2018.8659731

Chan, Chuansheng; Wong, Koksheik; Maungmuang, Imdad (2019) Data Hiding in MP4 Video Container based on Subtitle Track, 2018 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2018 - Proceedings, (1128-1131), 10.23919/APSIPA.2018.8659643

Lee, Weng Ken; Ong, Simying; Wong, Koksheik; Tanaka, Kiyoshi (2019) A Novel Coverless Information Hiding Technique Using Pattern Image Synthesis, 2018 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2018 - Proceedings, (1122-1127), 10.23919/APSIPA.2018.8659777

Ito, Ryoma; Wong, Koksheik; Ong, Simying; Tanaka, Kiyoshi (2019) Encryption and Data Insertion Technique using Region Division and Histogram Manipulation, 2018 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2018 - Proceedings, (1118-1121), 10.23919/APSIPA.2018.8659671

Yip, Sook Chin; Tan, Chiakwang; Tan, Wooi Nee; Gan, Ming Tao; Wong, Koksheik; Phan, Raphael C.W. (2018) Detection of energy theft and metering defects in advanced metering infrastructure using analytics, 2018 International Conference on Smart Grid and Clean Energy Technologies, ICSGCE 2018, (15-22), 10.1109/ICSGCE.2018.8556710

Wong, Koksheik; Kiya, Hitoshi (2018) Reversible data hiding for compression-friendly image encryption method, Proceedings - 9th Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2017, (1205-1209), Volume: 2018-February, 10.1109/APSIPA.2017.8282213

Liong, Sze Teng; Wong, Kok Sheik (2018) Micro-expression recognition using apex frame with phase information, Proceedings - 9th Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2017, (534-537), Volume: 2018-February, 10.1109/APSIPA.2017.8282090

Askarin, Mohammad Mogharen; Wong, Kok Sheik; Phan, Raphael C.W. (2018) Reduced contact lifting of latent fingerprint, Proceedings - 9th Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2017, (1406-1410), Volume: 2018-February, 10.1109/APSIPA.2017.8282252

Ong, Simying; Wong, Koksheik; Tanaka, Kiyoshi (2018) Redesigning data hiding: Interpolation-based scrambling-embedding method, Proceedings - 9th Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2017, (209-213), Volume: 2018-February, 10.1109/APSIPA.2017.8282029

Pang, Lielin; Wong, Koksheik; Liong, Sze Teng (2018) Data embedding in scalable coded video, Proceedings - 9th Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2017, (1190-1194), Volume: 2018-February, 10.1109/APSIPA.2017.8282210

Tan, Kuanyew; Wong, Koksheik; Ong, Simying; Tanaka, Kiyoshi (2018) Rewritable data insertion in encrypted JPEG using coefficient prediction method, Proceedings - 9th Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2017, (214-219), Volume: 2018-February, 10.1109/APSIPA.2017.8282030

Maungmaung, Imdad; Wong, Koksheik; Tanaka, Kiyoshi (2017) Reversible data hiding methods based on audio and video synchronization in MP4 container, 2016 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2016, 10.1109/ISPACS.2016.7824699

Maungmaung, Imdad; Tew, Yiqi; Wong, Kok Sheik (2017) Authentication of MP4 file by joint data embedding in audio and video tracks, 2016 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA 2016, 10.1109/APSIPA.2016.7820780

Tew, Yiqi; Wong, Koksheik; Phan, Raphael C.W. (2017) Joint selective encryption and data embedding technique in HEVC video, 2016 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA 2016, 10.1109/APSIPA.2016.7820912

Tan, Kuan Yew; Wong, Kok Sheik (2016) Low-cost campus bus tracker using WiFi access points, 2016 IEEE International Conference on Consumer Electronics-Taiwan, ICCE-TW 2016, 10.1109/ICCE-TW.2016.7520904

Tew, Yiqi; Wong, Koksheik; Phan, Raphael C.W. (2016) Region-of-interest encryption in HEVC compressed video, 2016 IEEE International Conference on Consumer Electronics-Taiwan, ICCE-TW 2016, 10.1109/ICCE-TW.2016.7520709

Maung, Imdad Maung; Tew, Yiqi; Wong, Koksheik (2016) Authentication for AAC compressed audio using data hiding, 2016 IEEE International Conference on Consumer Electronics-Taiwan, ICCE-TW 2016, 10.1109/ICCE-TW.2016.7520956

Buhari, Adamu Muhammad; Ling, Huo Chong; Baskaran, Vishnu Monn; Wong, Koksheik (2016) Low complexity watermarking scheme for scalable video coding, 2016 IEEE International Conference on Consumer Electronics-Taiwan, ICCE-TW 2016, 10.1109/ICCE-TW.2016.7520710

Liong, Sze Teng; See, John; Wong, Kok Sheik; Le Ngo, Anh Cat; Oh, Yee Hui; Phan, Raphael (2016) Automatic apex frame spotting in micro-expression database, Proceedings - 3rd IAPR Asian Conference on Pattern Recognition, ACPR 2015, (665-669), 10.1109/ACPR.2015.7486586

Moriyama, Masaya; Minemura, Kazuki; Wong, Koksheik (2016) Moving object detection in HEVC video by frame sub-sampling, 2015 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2015, (48-52), 10.1109/ISPACS.2015.7432735

Tew, Yiqi; Minemura, Kazuki; Wong, Koksheik (2016) HEVC selective encryption using transform skip signal and sign bin, 2015 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2015, (963-970), 10.1109/APSIPA.2015.7415415

Tew, Yiqi; Wong, Koksheik; Phan, Raphael C.W. (2015) HEVC video authentication using data embedding technique, Proceedings - International Conference on Image Processing, ICIP, (1265-1269), Volume: 2015-December, Issue Number: 15224880, 10.1109/ICIP.2015.7351003

Rad, Reza Moradi; Wong, Koksheik (2015) Digital image forgery detection by edge analysis, 2015 IEEE International Conference on Consumer Electronics - Taiwan, ICCE-TW 2015, (19-20), 10.1109/ICCE-TW.2015.7216848

Ong, Sim Ying; Wong, Kok Sheik (2015) Reversible multiple messages embedding using reflective blocks, 2015 IEEE International Conference on Consumer Electronics - Taiwan, ICCE-TW 2015, (17-18), 10.1109/ICCE-TW.2015.7216837

Tew, Yiqi; Wong, Koksheik; Baskaran, Vishnu Monn (2015) Dual layer video stream in HEVC through information hiding, 2015 IEEE International Conference on Consumer Electronics - Taiwan, ICCE-TW 2015, (15-16), 10.1109/ICCE-TW.2015.7216826

Lee, Pei Jun; Wong, Kokseik; Funabiki, Nobuo; Tseng, Chien Cheng (2015) Welcome message from TPC chairs, 2015 IEEE International Conference on Consumer Electronics - Taiwan, ICCE-TW 2015, 10.1109/ICCE-TW.2015.7216796

Abdullaziz, Osamah Ibrahiem; Goh, Vik Tor; Ling, Huo Chong; Wong, Koksheik (2015) Using IP identification for fragmentation resilient data embedding, 2015 IEEE International Conference on Consumer Electronics - Taiwan, ICCE-TW 2015, (11-12), 10.1109/ICCE-TW.2015.7216804

Baskaran, Vishnu Monn; Chang, Yoong Choon; Loo, Jonathan; Wong, Koksheik; Gan, Ming Tao (2015) Dominant speaker detection using discrete Markov chain for multi-user video conferencing, 2015 IEEE International Conference on Consumer Electronics - Taiwan, ICCE-TW 2015, (492-493), 10.1109/ICCE-TW.2015.7217016,

Minemura, Kazuki; Wong, Koksheik (2014) Sketch attacks: A note on designing video encryption method in H.264/AVC, 2014 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA 2014, 10.1109/APSIPA.2014.7041768

Tew, Yiqi; Wong, Koksheik (2014) Information hiding in HEVC standard using adaptive coding block size decision, 2014 IEEE International Conference on Image Processing, ICIP 2014, (5502-5506), 10.1109/ICIP.2014.7026113

Shivakuamra, Palaiahnakote; Lubani, Mohamed; Wong, Koksheik; Lu, Tong (2014) Optical flow based dynamic curved video text detection, 2014 IEEE International Conference on Image Processing, ICIP 2014, (1668-1672), 10.1109/ICIP.2014.7025334

Karim, Mustafa S.Abdul; Wong, Koksheik (2014) Defining redundancy in Histogram of any signal for reversible data embedding, 2014 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2014, (265-270), 10.1109/ISPACS.2014.7024465

Minemura, Kazuki; Palaiahnakote, Shivakumara; Wong, Koksheik (2014) Multi-oriented text detection for intra-frame in H.264/AVC video, 2014 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2014, (330-335), 10.1109/ISPACS.2014.7024478

Chua, Jia Luen; Chang, Yoong Choon; Jaward, Mohamed Hisham; Parkkinen, Jussi; Wong, Kok Sheik (2014) Vision-based hand grasping posture recognition in drinking activity, 2014 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2014, (185-190), 10.1109/ISPACS.2014.7024449

Liong, Sze Teng; Phan, Raphael C.W.; See, John; Oh, Yee Hui; Wong, Koksheik (2014) Optical strain based recognition of subtle emotions, 2014 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2014, (180-184), 10.1109/ISPACS.2014.7024448

Wong, Kok Sheik; Tanaka, Kiyoshi (2014) Data embedding for geo-tagging any contents in smart device, IEEE TENSYMP 2014 - 2014 IEEE Region 10 Symposium, (527-530), https://www.scopus.com/record/display.uri?eid=2-s2.0-84911974281&origin=resultslist

Moradi Rad, Reza; Ong, Sim Ying; Wong, Kok Sheik (2014) Reversible data hiding by adaptive modification of prediction errors, IWIHC 2014 - Proceedings of the 1st ACM International Workshop on Information Hiding and Its Criteria for Evaluation, Co-located with ASIA CCS 2014, (42-47), 10.1145/2598908.2598916

Abdullaziz, Osamah Ibrahiem; Goh, Vik Tor; Ling, Huo Chong; Wong, Kok Sheik (2014) A survey of network protocol based steganographic techniques, Conference Proceedings - Cryptology 2014: Proceedings of the 4th International Cryptology and Information Security Conference 2014, (229-235), https://www.scopus.com/record/display.uri?eid=2-s2.0-84923169477&origin=resultslist

Yip, Sook Chin; Wong, Koksheik; Phan, Raphael C.W.; Tan, Su Wei; Ku, Ivan; Hew, Wooi Ping (2014) A privacy-preserving and cheat-resilient electricity consumption reporting scheme for smart grids, 2014 International Conference on Computer, Information and Telecommunication Systems, CITS 2014, 10.1109/CITS.2014.6878971

Rad, Reza Moradi; Wong, Koksheik (2013) An efficient sign prediction method for DCT coefficients and its application to reversible data embedding in scrambled JPEG image, 2013 IEEE International Conference on Image Processing, ICIP 2013 - Proceedings, (4442-4446), 10.1109/ICIP.2013.6738915

Ong, Simying; Wong, Koksheik (2013) Rotational based rewritable data hiding in JPEG, IEEE VCIP 2013 - 2013 IEEE International Conference on Visual Communications and Image Processing, 10.1109/VCIP.2013.6706428

Rad, Reza Moradi; Wong, Koksheik (2013) Quality degradative reversible data embedding using pixel replacement, IEEE VCIP 2013 - 2013 IEEE International Conference on Visual Communications and Image Processing, 10.1109/VCIP.2013.6706349

Ong, Sim Ying; Minemura, Kazuki; Wong, Kok Sheik (2013) Progressive quality degradation in JPEG compressed image using DC block orientation with rewritable data embedding functionality, 2013 IEEE International Conference on Image Processing, ICIP 2013 - Proceedings, (4574-4578), 10.1109/ICIP.2013.6738942

Ong, Sim Ying; Wong, Kok Sheik; Tanaka, Kiyoshi (2013) Reversible and tunable scrambling-embedding method, ISPACS 2013 - 2013 International Symposium on Intelligent Signal Processing and Communication Systems, (608-613), 10.1109/ISPACS.2013.6704622

Abdullaziz, Osamah Ibrahiem; Goh, Vik Tor; Ling, Huo Chong; Wong, Koksheik (2013) Network packet payload parity based steganography, Proceedings - 2013 IEEE Conference on Sustainable Utilization and Development in Engineering and Technology, IEEE CSUDET 2013, (56-59), 10.1109/CSUDET.2013.6670985,

Karim, Mustafa S.Abdul; Wong, Koksheik (2012) Re-conceptualization of applications achieved by data hiding, ISPACS 2012 - IEEE International Symposium on Intelligent Signal Processing and Communications Systems, (447-451), 10.1109/ISPACS.2012.6473531

Chang, Ran; Xiao, Zhongmiao; Wong, Koksheik; Qi, Xiaojun; , (2012) Learning a weighted semantic manifold for content-based image retrieval, Proceedings - International Conference on Image Processing, ICIP, (2401-2404), Issue Number: 15224880, 10.1109/ICIP.2012.6467381,

Minemura, Kazuki; Moayed, Zahra; Wong, Koksheik; Qi, Xiaojun; Tanaka, Kiyoshi (2012) JPEG image scrambling without expansion in bitstream size, Proceedings - International Conference on Image Processing, ICIP, (261-264), Issue Number: 15224880, 10.1109/ICIP.2012.6466845

Xiao, Zhongmiao; Clark, Matthew J.; Wong, Kok Sheik; Qi, Xiaojun (2012) Dynamic semantic feature-based long-term cross-session learning approach to content-based image retrieval, ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, (1033-1036), Issue Number: 15206149, 10.1109/ICASSP.2012.6288062

Ong, Sim Ying; Wong, Kok Sheik; Tanaka, Kiyoshi (2012) Reversible data embedding using reflective blocks with scalable visual quality degradation, Proceedings of the 2012 8th International Conference on Intelligent Information Hiding and Multimedia Signal Processing, IIH-MSP 2012, (363-366), 10.1109/IIH-MSP.2012.94

Karim, Mustafa S.Abdul; Wong, Kok Sheik; Tanaka, Kiyoshi (2012) Reversible data embedding for any digital signal, 5th International Symposium on Communications Control and Signal Processing, ISCCSP 2012, 10.1109/ISCCSP.2012.6217807

Wong, Koksheik; Ong, Simying; Tanaka, Kiyoshi (2011) Improvement of carrier capacity for scalable scrambling method with reversible information insertion functionality, 2011 IEEE International Conference on Signal and Image Processing Applications, ICSIPA 2011, (312-317), 10.1109/ICSIPA.2011.6144133

Karim, Mustafa S.Abdul; Wong, Koksheik; Tanaka, Kiyoshi (2011) Reversible data embedding in Golomb-Rice code, 2011 IEEE International Conference on Signal and Image Processing Applications, ICSIPA 2011, (515-519), 10.1109/ICSIPA.2011.6144149

Wong, Koksheik; Ong, Simying; Tanaka, Kiyoshi; Qi, Xiaojun (2011) Bitstream size suppression for DCT-based information hiding method, 2011 International Symposium on Intelligent Signal Processing and Communications Systems: "The Decade of Intelligent and Green Signal Processing and Communications", ISPACS 2011, 10.1109/ISPACS.2011.6146110

Wong, Kok Sheik; Karim, Mustafa S.Abdul; Tanaka, Kiyoshi (2011) Improvements of data embedding in DCT compressed domain, IEEE Pacific RIM Conference on Communications, Computers, and Signal Processing - Proceedings, (268-273), 10.1109/PACRIM.2011.6032904

Al-Wahaib, Mustafa Safa; Wong, Kok Sheik (2010) A lossless image compression algorithm using duplication free run-length coding, Proceedings - 2nd International Conference on Network Applications, Protocols and Services, NETAPPS 2010, (245-250), 10.1109/NETAPPS.2010.51

Baskaran, V. M.; Wong, Kok Sheik (2010) Audio mixer with automatic gain controller for software based multipoint control unit, IEEE Asia-Pacific Conference on Circuits and Systems, Proceedings, APCCAS, (164-167), 10.1109/APCCAS.2010.5774867

Wong, Kok Sheik; Tanaka, Kiyoshi (2010) Scalable image scrambling method using unified constructive permutation function on diagonal blocks, 28th Picture Coding Symposium, PCS 2010, (138-141), 10.1109/PCS.2010.5702442

Baskaran, V. M.; Low, Yeong Sheng; Wong, Kok Sheik (2010) Building a real-time multiple H.264 video streaming system based on intel IPP, IEEE Asia-Pacific Conference on Circuits and Systems, Proceedings, APCCAS, (156-159), 10.1109/APCCAS.2010.5774918

Wong, Kok Sheik; Tanaka, Kiyoshi (2010) DCT based scalable scrambling method with reversible data hiding functionality, Final Program and Abstract Book - 4th International Symposium on Communications, Control, and Signal Processing, ISCCSP 2010, 10.1109/ISCCSP.2010.5463307

Wong, Kok Sheik; Tanaka, Kiyoshi (2009) Improvement of stegermelc with hybrid recursive matrix encoding, 2008 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2008, 10.1109/ISPACS.2009.4806680

Wong, Kok Sheik; Tanaka, Kiyoshi; Takagi, Koichi; Nakajima, Yasuyuki (2008) An efficient data representation scheme for complete video quality preserving data hiding, 2008 IEEE International Conference on Multimedia and Expo, ICME 2008 - Proceedings, (913-916), 10.1109/ICME.2008.4607584

Wong, Koksheik; Tanaka, Kiyoshi (2008) Complete video quality preserving data hiding with reversible functionality, 2008 3rd International Symposium on Communications, Control, and Signal Processing, ISCCSP 2008, (1029-1034), 10.1109/ISCCSP.2008.4537375

Wong, Koksheik; Tanaka, Kiyoshi; Qi, Xiaojun (2006) Graphical comparative study on DCT-based steganographic methods, 2006 International Symposium on Intelligent Signal Processing and Communications, ISPACS'06, (883-886), 10.1109/ISPACS.2006.364783

Qi, Xiaojun; Wong, Koksheik (2005) An adaptive DCT-based Mod-4 steganographic method, Proceedings - International Conference on Image Processing, ICIP, (297-300), Volume: 2, Issue Number: 15224880, 10.1109/ICIP.2005.1530050