The Hong Kong Polytechnic UniversityDepartment of
Electronic and Information Engineering
Research and Teaching Activities
Daniel P.K. Lun, PhDDept of EIE HKPolyUDept.of EIE, HKPolyU, Hong Kong
The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Outline
Introduction to the Department of Electronic d I f ti E i i f th Hand Information Engineering of the Hong
Kong Polytechnic UniversityResearch ActivitiesLearning and Teaching Activities
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The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
About the UniversityAbout the University
1937 Opened as “Government Trade
Over 70 Years of History
School” in Wood Road, Wan Chai1947 Became the “Hong Kong Technical
College” after World War IICollege after World War II1957 New premises in Hung Hom opened1972 Formal establishment of the “Hong
Kong Polytechnic”1994 Assumed full university status and
renamed as “The Hong Kong
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Polytechnic University”
The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
The Electronic and Information Engineering Department (EIE)g g p ( )
Established in 1974 (formerly known as the D t t f El t i E i i )Department of Electronic Engineering)Provided contemporary courses with modern subjectssubjects
Doctor of Philosophy (PhD)Engineering Doctorate (EngD)M t f Phil h (MPhil)Master of Philosophy (MPhil)Master of Science (MSc) / Postgraduate Diploma (PgD)BEng (Honours) in Electronic and Information EngineeringBS (H ) D i I d M l i di T h l i
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BSc (Honours) Degree in Internet and Multimedia TechnologiesHigher Diploma in Electronic and Information Engineering
The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Ed i l FEducational FocusEmphasizes applicationsEmphasizes applicationsDevelops creativity and innovationAll-rounded education: problem solving skills, criticalAll rounded education: problem solving skills, critical thinking, cross disciplinary skills, global outlook, Practice work-integrated education
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The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Part A: Research ActivitiesPart A: Research Activities
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The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Current Research Focuses
Telecommunications: Mobile Communication Systems, Power Control in Cellular Systems, Indoor Wireless Systems, Coding, Communication Networks
Multimedia Signal Processing: Image and Video Compression, Biometrics, Face Recognition, Bioinformatics, Information Technology in Medicine
Optical Communications, Optoelectronics & Photonics: GaN (III-V) Devices, p , p ( )Characterizations, UV Detectors, Optical Sensors, Optical Communication Networks
Nonlinear Systems: Complex Networks Applications in Traffic Modeling, Time-Series Analysis, Biomedical Signal Identification
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Analysis, Biomedical Signal Identification
Power Electronics: Switching Power Supplies, DC-DC Converters, Power Supplies for Lighting, Electronic Ballasts, LED Power Supplies
The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Research Centres/GroupsResearch Centres/Groups1. Centre for Signal Processing2 Applied Nonlinear Circuits and Systems2. Applied Nonlinear Circuits and Systems
Research Group3. Communications Research Group3. Communications Research Group4. Thin Film Optoelectronics Research Group
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The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Research OutputsOutputs 2002/03 2003/04 2004/05 2005/06 2006/07Outputs (Average per faculty member)
2002/03 2003/04 2004/05 2005/06 2006/07
Books, Book Chapters, Journal 3 12 3 05 3 25 4 17 3 51Books, Book Chapters, Journal Papers
3.12 3.05 3.25 4.17 3.51
Conference Papers 3.37 4.33 3.82 2.8 3.73
Total 6.49 7.38 7.07 6.97 7.24
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The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Industrial & Application-Oriented ProjectsNovel applications of existing technologies UWB developed in EIE
Communications: ultra-wideband indoor radios, RF systems, optical communicationsPhotonics: UV sensors interdisciplinaryPhotonics: UV sensors, interdisciplinary applications, environmental applicationsMultimedia: informatics applications, voice bi t i di l i f ti d di l
UV detector
biometrics, medical informatics and medical imaging, codecElectronics: new lighting devices (LEDs), advanced packaging, power supplies for implantable devices, sensor networks
LED lights developed in EIE
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Patents filed and granted in past 5 years: 16 (total)
The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Achievement HighlightsWinning Power Supply
Distinguished International Research Fellow, University of Calgary Canada Grand Champion, Efficiency Challenge,
California Energy Commission 2004University of Calgary, Canada2 IEEE FellowsFellow of Australian Academy of Technological Sciences and EngineeringTechnological Sciences and Engineering IEEE Distinguished LecturerGrand Champion, Efficiency ChallengeC P i E ll i M di lCrump Prize on Excellence in Medical EngineeringIEEE Transactions on Power Electronics Best P A dPaper AwardIEEE Signal Processing Society Honorable Mention Award
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International Journal of Circuit Theory & Applications Best Paper Award
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The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Oth I tOther ImpactsKeynote Addresses / Invited Tutorials at
International ConferencesIEEE European Conf. on Circuit Theory and Design, Cork, Ireland 2005IEEE International Symposium on CircuitsIEEE International Symposium on Circuits and Systems, Bangkok, Thailand 2003IEEE International Conf. on Networks and Signal Processing, Nanjing 2003
:Editorships of International Journals
IEEE Transactions on Circuits andIEEE Transactions on Circuits and Systems Part I / Part IIIEEE Transactions on Image Processing
IEEE T ti I f ti
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IEEE Transactions on Information Technology in Medicine
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The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Applied Nonlinear Circuits and Systems Research Applied Nonlinear Circuits and Systems Research GroupGroupLeader: Leader: Prof. Michael TseProf. Michael Tse
The Applied Nonlinear Circuits and Systems Research Group has established itself, with 17 years of experience, as a Pioneer in computer-aided analysis and design of power converters.
Major Research AreasMajor Research Areas• Power Electronics• Circuit theory• Sliding-mode control applications• Chaos-based communications• Disease propagation dynamics• Time-series analysis and applications to
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biomedical signal processing
The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Communication Research GroupCommunication Research GroupGroup Leader: Group Leader: Prof. Alex WaiProf. Alex Wai
Communications, especially mobile communications and networking, has experienced a phenomenal growth during the past two decades and this growth is projected to continue in the foreseeable future. The Group undertakes research in different areas of communications
Main Topics of ResearchWi l i ti
undertakes research in different areas of communications.
• Wireless communications• Electromagnetics• Chaos-based spread-spectrum
communicationscommunications • High Speed Networking• Optical fiber communication systems
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The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Thin Film Optoelectronics Research GroupThin Film Optoelectronics Research GroupGroup Leader: Group Leader: Prof. C. SuryaProf. C. Surya
The Thin Film and Optoelectronics Research Group focuses on applied experimental and theoretical research for the development of modern semiconductor optoelectronic devicesof modern semiconductor optoelectronic devices.
Selected Current ProjectsCooperati e Research Centre for the• Cooperative Research Centre for the development of III-V nitride based optoelectronic components
• Fabrication and characterization of GaN-b d bl LED d h t t tbased blue LEDs and heterostructures
• Non-destructive measurement of longitudinal dispersion of an optical fiber
• Optimum design of dispersion profile of ti l i ti t
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an optical communication system• Realization of high-density information
storage using ferroelectric thin films
The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Centre for Signal ProcessingCentre director: Centre director: Prof. W.C. SiuProf. W.C. Siu (15 academic staff members from different Departments)
Full Spectrum of Research Work in Signal Processing
• Fundamental studies on transforms, high-performance DSP, and ASIC Design
• Image Processing and Video Technologies• Speech enhancement, recognition and
speaker Identification• Pattern recognition• Information transfer and storage• Biomedical signal processing
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• Intelligent systems, fuzzy logic & neural networks
The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
R d f R k d i i i
PublicationsC t b h bli h d th 700 t h i l ti l
Records of Recent work and activities:
Centre members have published more than 700 technical articles(1999-2005)
Total number of books/book chapters: 39Total number of international journal papers: 239j p pTotal number of national journal papers 15Total number of conference papers: 418
(Sample journals and conferences: IEEE Transactions (on IP, SP and VT),Pattern Recognition, Signal Processing: Image Comm., etc., ICASSP, ISCAS,atte ecog itio , Sig al ocessi g: age Co ., etc., C SS , SC S,ICIP, CPM, etc.)
Industrial+Government+University Funding:HK$ 38 000 000 (1999-2005)HK$ 38,000,000 (1999 2005)Activities of Members:
Keynote speakers of international conferences, editors/associate editors of
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international journals, members of technical committees, etc.
Successfully produced 54 PhD/MPhil Graduates (1999-2005)
The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Intelligent Multimedia Home
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The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Low cost home appliance control using power linep
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The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Voice Commanding
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The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Access Control by Face recognition
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The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Remote Monitoring and Control
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The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Remote Monitoring and Control
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The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Image Compression, Video Coding Streaming andCoding, Streaming and
Transcoding
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The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
W l t B d I C d JPEG2000Wavelet Based Image Coder – JPEG2000JPEG 2000 is a wavelet-based image coder intended to
t i di tcreate a new image coding system for different types of still images with different characteristicswith different characteristics allowing different imaging models
25JPEG2000 at 0.125 bppJPEG at 0.125 bpp
The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Content-based video coding
Real-timeCode the moving
Combine with theReal time
object segmentation
moving objects with video codec
with the background
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Transmit Receive
The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Video Interpolation
While video broadcasting has entered into the high definition era, the previously prepared low definition videos do not meet the resolution requirementNeed interpolation from Low-Def to Hi-DefT diti l h h i i i i thTraditional approaches emphasize on maximizing the signal to error ratio do not carefully consider human perceptionThe proposed approach enhances edges and sharp transitions in the images that make the resulting video look better
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InterpolationDemo
look better
The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Video Transcoding: Transcoding the H.263 to the H 264 within the Transform Domainthe H.264 within the Transform Domain
Why transcoding from H.263 to H.264 ?
• Complete migration to the new H.264 will take several years since H.263 and MPEG are widely used in many multimedia applications nowadays. pp y
• This creates an important need for transcodingtechnologies that convert the widely available H.263 compressed ideos to H 264 compressed formatcompressed videos to H.264 compressed format.
• The proposed approach directly converts the DCT coefficients in H 263 to integer transform coefficients in
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coefficients in H.263 to integer transform coefficients in H.264 that reduces a lot of computational errors compared with the conventional methods.
The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Original Movie Conventional requantization
29Our H.263 to H.264 Video Transcoder
The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Signal EnhancementS g a a ce e t
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The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Application 1: Block transform images deblockingdeb oc g
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The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Singularities introduction over smooth area
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The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Original JPEG
CLS ProposedWTMS
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The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
2-D GCV Proposed ApproachApplication 2: Blind Image Restoration
DPRT
2-D FFT 1-D FFT
1-D FFT. . .
P+1
IDPRT
Complexity: O(N2log2N2) Complexity: O((P+1)Nlog2N)where N >> P
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w e ewhere P is the size of the PSF
The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Results
O i i Bl d d i i
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Original Blurred and noisy image (BSNR = 30dB)
The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Restored image using Restored image using
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the proposed approach(SER = 22.66dB)
GCV (SER = 22.01dB)
The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Noise 2 D GCV Proposed DPRTNoiselevel
2-D GCV Proposed DPRT approach
No of Flops / I*F No of Flops / I*F +BNSR
No. of iterati-ons (I)
Flops / iter. (F)
I*F No. of iterati-ons (I)
Flops / iter. (F)
I*F + DPRT
40dB 361 5.5x106 2x109 1,515 40,759 6.3x107
30dB 318 5 5x106 1 8x109 1 648 40 759 6 8x10730dB 318 5.5x106 1.8x109 1,648 40,759 6.8x107
Comparison in terms of arithmetic operations required
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Comparison in terms of arithmetic operations required
The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Application 3: Speech Enhancement
In real environment speech obtained from theIn real environment, speech obtained from the microphone can be very noisySuch noise can be wideband hence cannot beSuch noise can be wideband hence cannot be removed by simply low pass filtering it Enhancement can be done by closelyEnhancement can be done by closely examining the power spectrum of the speech
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The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
It is a topic that has been researched for over 40 years
Still no final solution!It is because
Noise level ↓ → speech intelligibility ↓o se e e speec te g b tySpeech intelligibility ↑ → noise level ↑
Current approaches are to strive a goodCurrent approaches are to strive a good balance between noise level and speech intelligibility
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intelligibility
The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Original Noisy
40Using Wiener filter The proposed method
The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Part B: Learning and Teaching ActivitiesActivities
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The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Undergraduate Programmes
Bachelor of Engineering (Honours) in ElectronicBachelor of Engineering (Honours) in Electronic and Information EngineeringBachelor of Science (Honours) in Internet andBachelor of Science (Honours) in Internet and Multimedia Technology
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The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Modes of Study (1)
Foundation Year
Year 1
Year 2 Exchange Study in an overseas Year 2
Year 3
Exchange Study in an overseas university for one semester
Graduate
43For BEng(Hons) in EIE and BSc(Hons) in IMT
The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Modes of Study (2)
Sandwich mode of Foundation Year
Year 1
Sandwich mode of study: total 5 years
Year 1
Year 2
Year 3: Sandwich Optional: Work in a company for one year
Year 4
year
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GraduateFor BEng(Hons) in EIE and BSc(Hons) in IMT
The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Major study areasMajor study areas
Circuits and MicroelectronicsCommunication EngineeringC E i iComputer EngineeringInformation T h lTechnology
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The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Various Learning Experiences
ExchangeIndustrial center trainingIndustrial trainingPreferred Graduate SchemeIndustrial ProjectsjStudy TourCommunity Services
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Community ServicesProblem-based learning
The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Problem-Based Learning
The Department has been implementing problem-based learning (PBL) for years to improve students’ understanding and retention of the learnt knowledge, P bl b d l iProblem-based learning
Originally developed for medical school education in 70’sTeach students both content and problem solving skills through engagement with authentic real-world problems
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The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Ch i i f PBLCharacteristics of PBL [1]
Problem Analysis
Self-directedTestSol tion LearningSolution
BrainstormingDiscussion
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[1] Massa, et al, “Problem-based Learning in Technology Education”, HI-TEC 2009, Scottsdale, AZ, July 2009
The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
B fi f PBLBenefits of PBL [1]
Promote “deep learning” Improve critical thinking and problem solving skillsImprove motivation for learningImprove students’ ability to transfer skills p o e s ude s ab y o a s e s sand knowledge to new situations
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The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
PBL I l d i EIEPBL Implemented in EIE
A semi-PBL approach has been usedLearning occurs collaboratively in small groupsLearning occurs collaboratively in small groupsProblems are presented after some formal introduction has been presented to studentspStudents are required to work out the rest via self-directed learningI t t t f ilit t t ti t thi i tInstructor acts as a facilitator starting at this point providing focused instruction and guidance on an “as needed” based
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The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
E l I d P jExample: Integrated Project
All year-2 students are required to take a 3 credits subject, namely Integrated Projectcredits subject, namely Integrated ProjectIt is a project based subject, i.e. the whole subject is about doing a projectObjectives:
Apply knowledge acquired in other subjects in an integrated mannerintegrated mannerDeepen the understanding of the learnt knowledgeProvide students with the experience of project
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jdevelopment
The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Ch ll dChallenges to students
TechnicalSoftware developmentSoftware developmentSystem integrationSystem troubleshooting
Non-technicalTeamworkTime and resource managementTime and resource managementProblem solvingCommunications
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The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
P j T iProject Topic
To ensure all students will work out the solution by themselves, the project topic is changed every yearIn 2007/08 the topic was “Robot Car Race –In 2007/08, the topic was Robot Car Race –Augmented Reality”
To enable first person xperience in a real car raceLive video is combined with 3D graphics
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The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Architecture of the Car RacingArchitecture of the Car Racing SystemA steering wheel
with a marker
Motion Tracking Server
Network
Game Server(Mindstorms Control )
Motion Tracking System
Marker
Students’ program
(Mindstorms Control )
Video Server
Marker Bluetooth radio(Control car movement)
Server
3D GraphicsEngine
Video +3D Graphics
RFLego Mindstorms
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EngineRF(Transmit video)
Lego Mindstorms and a wireless video camera
The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
S h d l d ASchedule and ArrangementGrouping and Job assignment
2 students in a group2 students in a group Each group member has been pre-assigned a task to achieveThe results have to be combined to complete the project –need collaboration
Lectures - 6 lectures in the first 3 weeks Laboratory work
Each group member does different laboratory works (3 labs)The labs are to familiar them with the basic setup in the projectHence each group member does not know the details of the task of his/her partner – force them to collaborate
ProjectProjectStudents need to figure out the best control strategy and the best graphics add onto the game
Meetings
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gTwice per week after the lectures and labs For instructor to give advices to students
The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
A W i h iAssessment WeightingA t T W i htiAssessment Type WeightingLab exercises 20%Logbook / Progress report / Final report 30%Logbook / Progress report / Final report / Presentation
30%
Result in Qualifying Round 15%Q y g
Result in the Final 25%
Winners of the race (to reward those putting extra effort in the project)
(max 16% bonus)
Project Management 10%
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Project Management 10%
The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Video clips of 2007/08 interactive game design project competition
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The Hong Kong Polytechnic UniversityDepartment of Electronic and Information Engineering
Thank you for your attention andand
Welcome any collaboration onWelcome any collaboration on the above topics
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