Research

MAIN RESEARCH INTERESTS

• Gesture recognition based on sEMG & UltraSound signals and Deep Learning
• Signal, Image and Video Processing / Analysis
• Image and Video Coding
• HDR Image Compression
• Data Hiding in Images and Video
• Fast Transform Algorithms; Time / Space Optimisation of Computationally Intensive Algorithms
• Digital Signal Processors and Microprocessors; Real-time implementation of DSP algorithms

For more information on the current research interests please consult the Publications and Student Projects web pages.

 

Reference ENF Recordings for Mainland Greece ...

Reference Electrical Network Frequency (ENF) signals from the Greek main power grid are recorded 24/7 at the Digital Signal and Image Processing Lab, ECE Dept, University of Patras, as of July 13, 2016.

ENF Signal in Real-Time
The ENF signal graph for Mainland Greece in near Real-Time is depicted at http://enf4gr.ece.upatras.gr/ . The latest 200 ENF values and a histogram of the latest 12000 values are shown, along with additional statistical information. More details are included in the Technical Reports TR002 and TR003.

Free download from here or here.

ENF Recordings - 2021/03 to Today

The system continuously captures the power-line signal and extracts the Electric Network Frequency (ENF) for mainland Greece on a 24/7 basis. The ENF data are uploaded to the cloud and made freely available for download to researchers using ENF in their studies, via the provided  link.

The recordings are stored in .csv file format. Additional details about the system architecture, as well as the Python code running on the Raspberry Pi, are provided in Technical Report TR001.

Related work:

TRIANTAFYLLOPOULOS, A., KRILIS, I., FOLIADIS, A. and SKODRAS, A.N: "A Hilbert-Based Approach to the ENF Extraction Problem", Proc. IEICE Information and Communication Technology Forum 2016 (ICTF 2016), Patras, Greece, 6-8 July 2016.

https://www.dropbox.com/s/pzcf9neya4lqt1g/ans-c105.pdf?dl=0

http://www.ece.upatras.gr/skodras/index.php?id=publications 

 

EMG Dataset

The MyoUP (Myo University of Patras) database contains recordings from 8 intact subjects (3 females, 5 males; 1 left handed, 7 right handed; age 22.38 ± 1.06 years). The acquisition process was divided into three parts: 5 basic finger movements, 12 isotonic and isometric hand configurations and 5 grasping hand-gestures. The recording device used was the Myo Armband by Thalmic labs (8 dry sEMG channels and sampling frequency of 200Hz).

Demos of the acquisition process are on YouTube here & here

The sEMG dataset is available for free download here

 

PARTICIPATION IN PROGRAMMES

European:

• 2023 - 2027 IMEC (Belgium): AI-PUSH  (AI-powered UltraSound data Handling)
• 2020 - 2022 DAAD: Ego​centric Perception, Interaction and Computing in the Deep Learning​​ Era (with University of Tübingen, Germany)
• 2018 - 2023 VUB: International Joint Research Group on ICT (VUB – UPatras)
• 2010 - 2014 COST IC 1003: Qualinet - European Network on Quality of Experience in Multimedia Systems and Services
• 2004 - 2006 IST (IP): E-LeGI: European Learning Grid Infrastructure
• 2002 - 2004 IST: LeGE-WG project: Learning Grid of Excellence Working Group
• 1998 - 1999 ESPRIT: EUROSTILL project "A Concerted European Initiative towards the Standardisation of the next Generation Still Image Compression - JPEG 2000"
• 1999  European Parliament STOA study: "Development of Surveillance Technology & Risk of Abuse of Economic Information"
• 1997 - 1999 GR-UK: Joint Research & Technology Programmes: "Low Bitrate Colour Video Coding for Personal Communication System Applications"
• 1997 - 1999 SOCRATES: ACIS project "Acting Competences for the Information Society"
• 1994 - 1996 Human Capital and Mobility: "Vision Algorithms and Optical Computer Architectures"
• 1994 - 1996 TIDE: "European Sign Language Interactive"
• 1994 - 1995 EUROMANAGEMENT R&TD II
• 1993   COMETT
• 1992   TEMPUS: "Development of the Graduate and Post-Graduate Education in Signals, Circuits and Systems at the Polytechnic Institute of Bucharest, Romania"
• 1992 - 2012 ERASMUS / SOCRATES
• 1991   EUROMANAGEMENT R&TD I: Pilot Scheme for R&TD Audits
• 1989 - MOTOROLA University Support Programme

National:

• 2005 - 2009 GSRT (PENED 2003): "Research on New Methods for the Management and Transmission of Augmented Reality Data"
• 2003 - 2005 GSRT (e-LEARNING): "Server for Teaching the Greek Language (EAGLE)"
• 2003 - 2005 GSRT (PRAXE 2002): "IPR Protection System (STIGMA)"
• 2003 - 2005 GSRT (PABET NE): "Development of on Integrated System for the Protection of IPR"
• 2001 - 2003 GSRT (PABET): "Watermarking of Images"
• 2000 - 2001 GSRT (EPET II): "Human Networks For the Dissemination of the S+T Knowledge for Teleworking"
• 1998 - 2001 GSRT (YPER): "Watermarking of Digital Images"
• 1995 - 1997 GSRT (EPET II): "Human Networks For the Dissemination of the S+T Knowledge"
• 1994 - 1995 GSRT  (SYN): "Videoconferencing System In an Industrial Environment"
• 1995 - 1996  GSRT (PABE): "Integrated Educational System for Mentally Handicapped Children"
• 1987 - 1988 BILATERAL COOPERATION "Computer Based Diagnostic Methods for the Measurement of the Bio-impedance"
• 1986 - 1987 GSRT "2-D Digital Filter Implementation"
• 1986 - 1988 GSRT "Design and Construction of an Electronic Device for the Monitoring of Infants’ Heart and Brain Functioning"