Department of Telecommunication and Multimedia

ENHANCEMENT OF QOS PARAMETERS IN MANET AND MESH NETWORKS prof. Vladimír Wieser, PhD. Ing. Štefan Pollák

Abstract In the present, the mobile communication networks MANET (Mobile Ad-hoc networks) are rapidly developing, based on Adhoc platform (communication among mobile nodes without infrastructure and without central control), or mesh networks (ad-hoc networks with access points connected together). In the near future it is possible to expect the grows of services, which are demanding to preserve the high values of QoS parameters (throughput, delay, jitter, packet error rate etc.). One of methods how to enhance QoS parameters is to minimize the mutual interference in network, which is created by non-coordinate selection of transport channels among mobile nodes. The project is oriented to develop algorithms for distributed selection of transport channel in cooperation with antenna system adaptation (switching) by such a way, to minimize mutual interference (QoS parameters enhancement) and at the same time to maximize reuse channel effectiveness.

Faculty of Electrical Engineering

2

QoS parameters enhancement by radio interface number optimization in wireless mesh network Average Throughput 1,8E+06

Average Throughput (bit/s)

1,6E+06 1,4E+06 1,2E+06 1,0E+06 8,0E+05 6,0E+05 4,0E+05 2,0E+05 0,0E+00 1

2

3

4

5

6

7

8

9

10

Number of Radio Interfaces

Faculty of Electrical Engineering

3

QoS parameters enhancement by radio interface number optimization in wireless mesh network End-to-end Delay

Packet Error Rate 90

0,6000

80 70 60

0,4000

PER (%)

End-to-end Delay (sec)

0,5000

0,3000

50 40 30

0,2000

20 0,1000 10 0,0000

0 1

2

3

4

5

6

7

8

9

10

1

2

Number of Radio Interfaces

3

4

5

6

7

8

9

10

Number of Radio Interfaces

Faculty of Electrical Engineering

4

The efficiency comparison of routing protocols under different network size of wireless mesh network

Faculty of Electrical Engineering

5

The efficiency comparison of routing protocols under different network size of wireless mesh network

Faculty of Electrical Engineering

6

Department of telecommunication and multimedia

EDA A-0930-RT-GC HECTOR - HELICOPTER FUSELAGE CRACK MONITORING AND PROGNOSIS THROUGH ON-BOARD SENSOR NETWORK assoc. prof. Róbert Hudec, PhD.

Abstract To propose modeling techniques for analysis of multiple sensors in producing a unified and comprehensive methods for identification, monitoring and prognosis of potential damages (like cracks) in the fuselage of a helicopter.  Radio wave propagation modelling in helicopter environment (cockpit, tail).  Wireless and/or wired sensor network architecture development.  Helicopter's sensor network technology (wired, wireless) selection and communication link between sensor network and external service point creation.  Creation of network simulation model.  Helicorter's HW sensor network prototype development.  SW for sensor data collecting and transmitting to industrial PC and service man's tablet development.  GUI for archiving, crack prognosis and visualization of sensor data on Service man's tablet. Faculty of Electrical Engineering

8

Radio wave propagation in helicopter environment IEEE 802.15.4 (ZigBee)

Simplified CAD model

Faculty of Electrical Engineering

9

Hardware solutions

Faculty of Electrical Engineering

10

GUI for archiving, crack prognosis and visualization of sensor data on Service man's tablet

Faculty of Electrical Engineering

11

Department of telecommunication and multimedia

LABORATORY OF DIGITAL VIDEO PROCESSING assoc. prof. Róbert Hudec, PhD.

Main research topics •

2D Noisy grayscale/color image filtering • • • •

•

Video content analysis (MPEG-7) • • • • • •

•

Combined low-level descriptors (color, texture, shape, …) Video content segmentation (semantic approach), spatial segmentation Automatic annotation systems Still picture retrieval system DVB-S downloading and streaming platform Shot boundary detection, time segmentation

Traffic video systems • •

•

Adaptive order-statistics filters (L-filters) Adaptive algorithms Adaptive Signal-Depending filters Spatial impulse detectors

Feature extraction and dynamic information mining from video data Urban traffic monitoring system

Medical applications •

3D metabolite data visualitation from MRI

Faculty of Electrical Engineering

13

2D Noisy grayscale/color image filtering • SW - IFM (Image Filtering Machine) • median, mean, Wiener, Frost, Kuan, Lee, Lopes, … • blur, sharpen, emboss, edge detection, contrast, operators, … • Gaussian, impulsive and mixed noise suppression • Adaptive signal-depending L-filtration • Order-statistics and texture spatial impulse detectors

Original image Lena

Noisy, G20I10

Filtered by C2

Original image Lena

Noisy, G20CI10

Filtered by L2SD LMSC L-F

Faculty of Electrical Engineering

SCOSD2SD5

L-F

14

Video content analysis (MPEG-7) • SW – INIRES (INteractive Image REtrieval System) • Combined low-level descriptor searched

searched

searched

searched

d=0.11313 d=0

d=0.1065

d=0.12112

d=0.13506

d=0

d=0.14474

d=0.55403

d=0.59419

d=1.3798

d=1.3816

d=1.3836

d=0.60258

d=0.60932

d=0.64294

d=1.4046

d=1.4379

d=1.6485

d=0.65696

d=1.7655

d=1.8322

d=1.8474

d=0.37899

d=0.41163

d=0.65014

d=0.1563 d=0.14887

d=0.50768 d=0.25941

d=0.16643

d=0.42505

d=0.43059

d=0.37056

d=0.41366

d=0.65519

d=0.43495

• DVB-S downloading and streaming system

Faculty of Electrical Engineering

15

Semantic video and Shot-boundary detection • cut (abrupt transition), • fade in/out, dissolve, wipe (gradual transition), Video Sequence

TV JOJ

TV MARKIZA

STV 1

Story/Event

INPUT STREAMS

Scene/View

FEATURES EXTRACTION

100

Shot

w3 DF 0.1 w3 DF 0.5 w3 DF 1 w3 DF 10 w7 DF 0.1 w7 DF 0.5 w7 DF 1 w7 DF 10 w11 DF 0.1 w11 DF 0.5 w11 DF 1 w11 DF 10

90 CUT, FADE IN/OUT, DISSOLVE, WIPE

Frames

80

TRANSITION DETECTOR

Key Frames

SHOT CLASSIFICATOR LOW LEVEL DESCRIPTION

SHOT DESCRIPTOR

Recall [%]

70 60 50 40

0.4

30

ΔIi

0.3 0.2

0

0

1000

2000

3000

4000

5000

6000

7000

DF 1 - 10

DF 0.1

20

SCENE/STORY JOINTER

0.1

DF 0.5

8000

10

FRAME ORIGINAL CUTS

1

HIGH LEVEL - SEMANTIC DESCRIPTION

0

0

1000

2000

3000

4000

5000

6000

7000

0

1000

2000

3000

4000

5000

6000

10

20

30

40 50 60 Precission [%]

70

80

90

100

NEW STREAM MAKER

1

0

0

8000 FRAME

DETECTED CUTS

0

SCENE/STORY DESCRIPTOR

7000

8000 FRAME

MIX STREAM OUTPUT STREAM

Faculty of Electrical Engineering

16

Traffic video systems • • • •

Plate and nationality identifications Moving object features recognition Object tracking and separation Entity detection (human, car, truck)

CAMERA #1 - features extraction (top camera) Moving segmentation

Input camera (top) Recording element Input cameras (side)

Objects separation

Entity detection

HSV Color segmentation

RGB Color classificator

Violation ?

NO

YES

CAMERA #2 - features extraction (side camera) Moving segmentation

Control

Object tracking

Objects separation

Features extraction (plate, logo, etc.)

Databases

Features vectors

Comparison and evaluation

Creation of violation ticket

Faculty of Electrical Engineering

17

Selected publications  HUDEC, R. – DUBCOVÁ, Z. – LUKÁČ, P. – BENČO, M.: Cut Detection Algorithm Based on the Order-Statistics Detector, RTT 2009, 2-4 september 2009, Srby, Czech Republic, ISBN 978-80-01-04410-0  BENČO, M., HUDEC, R.:Novel Method for Color Texture Features Extraction Based on GLCM, Vol.16, No.4, pp. 64-67, December 2007. ISSN 1210-2512, (INSPEC, SCOPUS)  HUDEC, R., BOJMÍR, M., BENČO, M.:Video concealment method using the detection of damaged watermarks in frequency domain, RTT 2010 september 2010, Velké Losiny, Czech Republic, ISBN 978-80-248-22617, (Thomson Reuters)  JELSOVKA, D., HUDEC, R. Face recognition on ORL and YELL database using PCA method, International Conference on Knowledge in Telecommunication Technologies and Optics 2010, KTTO, Technical University of Ostrava, Czech Republic, December 9 – 10., 2010, ISBN 978-80-248-2330-0 Faculty of Electrical Engineering

18

Selected publications  HUDEC R. - BOJMIR M. - BENCO M.: Video concealment method using the detection of damaged watermarks in frequency domain, Research in Telecommunication Technologies RTT2010, September 8-10 2010, Velké Losiny, Czech Republic, CD proceedings: ISBN 978-80-248-2261-7.  R. Hudec, M. Benčo, J. Krajčovič: SD LMS L-filters for filtration of gray level images in time-spatial domain based on GLCM features, Advances in Electrical and Electronic Engineering, Vol.7, No.1-2, pp.51-54, Žilina 2008, ISSN 1336-1376.  POČTA, P., HUDEC, R., BOJMÍR, M.: Performance Evaluation of Video Transmission over IEEE 802.11b WLANs from the Video Quality Perspective, In The Mediterranean Journal of Computers and Networks, vol.5, No.2, 2009, pp. 53-58, SoftMotor (UK), ISSN 1744-2397.  Z. Dubcova, P. Lukac: Cut detection algorithm based on the histogram diferences, 33rd International conference on DSP, August 17th-20th, 2010, Baden near Wiena, Austria, ISBN 978-963-88981-0-4. Faculty of Electrical Engineering

19

Department of telecommunication and multimedia

LABORATORY OF APPLIED RESEARCH AND TECHNOLOGY DEVELOPMENT assoc. prof. Róbert Hudec, PhD.

Main research topics •

SYDMOS system (SYstem for Distant MOnitoring of the health State). • •

• •

TEBID (TErminal for collecting and transmission of BIoData). SYDES system (SYstem of connectivity to the Data of the E-health State).

TEBID-ASCII protocol Services (Client Personalisation, Position via Condition on Demand, ECG monitoring, SpO2, …)

GSM

Network,

Health

Centric model of SYDMOS

Faculty of Electrical Engineering

21

Prototypes and Technology

TEBID prototype SpO2 sensor prototype

Faculty of Electrical Engineering

22

Faculty of Electrical Engineering

23

Faculty of Electrical Engineering

24

Selected publications  DUBCOVÁ, Z. - HUDEC, R. - VESTENICKÝ, M.: Design of SpO2 NonInvasive System for Oxygen Level‘s Measurement Purpose, First International Workshop on Medical Applications Networking (MAN 2009), 14-18 jún 2009, Dresden, Germany, ISBN 978-1-4244-3437-4  PIRNÍK, R., HUDEC, R., CIGÁNEK, P.:Terminal concept for disabled people,Scientific Reports - Wissenschaftliche Berichte: Journal of the University of Applied Science Mittweida (Wissenschaftliche Zeitschrift der Hochschule Mittweida (FH)), no. 3, 2005, pp. 43-46, Germany, ISSN 1437-7624  R. Hudec, M. Vestenický: The m-health terminal for collecting and transmission of biodata. Proceedings of Fifth International Symposium „Communication systems, networks and digital signal processing, CSNDSP 2006“, 19-21 July 2006, pp. 228-231, University of Patra, Greece, ISBN 960-89282-0-6.

Faculty of Electrical Engineering

25

Selected publications  M. Vestenický, R. Hudec: Communication Model of the SYDMOS System and TEBID ASCII Protocol, Proceedings of 13th International Conference on Systems, Signals &Image Processing - IWSSIP'06, pp. 279-282, September 21-23, 2006 - Budapest, Hungary.

Faculty of Electrical Engineering

26

Department of telecommunication and multimedia

TECHNOLOGICAL INFRASTRUCTURE FOR VERIFYING THE OUTPUTS OF RESEARCH AND DEVELOPMENT ON ACCESS NETWORK – PROJECT #004ŽU-8/2008

Ing. Martin Vestenický,PhD. EXPLAB laboratory

EXPLAB laboratory Basic information  The EXPLAB laboratory was build up upon project "Technological infrastructure for verifying the outputs of research and development on access network - Project. 004ŽU-8/2008".  EXPLAB is placed on the Department of Telecommunications and Multimedia.  The laboratory is equipped with unique designed equipment for testing the performance of IP networks and microwave circuits.

Faculty of Electrical Engineering

28

EXPLAB laboratory Benefit

 The benefit of this project is in increasing of level of equipment at the Department of Telecommunications and Multimedia at the field of technology and instrumentation infrastructure.  This infrastructure is intended to verify the results of theoretical research and development on access and wireless networks.  Provide a platform that enables the verification and assessment of previous results obtained from the doctoral theses and projects in basic research .

Faculty of Electrical Engineering

29

EXPLAB laboratory Microwave circuits station

Faculty of Electrical Engineering

30

EXPLAB laboratory IP network performance test station

Faculty of Electrical Engineering

31

Department of Telecommunication and Multimedia

SPEETIS – SPEEch technologies Speech technologies for advanced Telecommunication and Information Services in Slovak language assoc. prof. Ing. Roman Jarina, PhD.

Digital speech signal processing  SPEETIS – SPEEch technologies Speech technologies for advanced Telecommunication and Information Services in Slovak language  Project APVV (APVV-0369-07), 2008-2010  Partners:  TU Košice - coordinator  Informatics Institute, Slovak Academy of Science Bratislava  University of Žilina (UNIZA)  Scientist in charge for UNIZA – Dr. Roman Jarina  URL: http://speetis.fei.tuke.sk Faculty of Electrical Engineering

33

SPEETIS  R&D of algorithms for speech processing in Slovak language:    

Automatic recognition of fluent spontaneous speech Speech synthesis Speech and multimodal dialog systems Development of new voice-based services

34

SPEETIS  Contribution of the Department of Telecom. and Multimedia, UNIZA:  Automatic speaker recognition and segmentation  QoS, Speech synthesis quality evaluation. Influence of a telecommunication channel to speech quality.  User centred evaluation of speech communication systems. Quality of Experience.  Speech databases development

35

SPEETIS

 Počta, P., Mrvová, M., Holub, J.: Impact of Different Active-Speech-Ratios on PESQ’s Predictions in Simulated VoIP Environment, Acta Acustica and united with Acustica, Vol. 95, No.5, 2009, str. 950-957, ISSN 16101928, (Current Content)  Počta, P, Vlčková, H., Polková, Z., Holub, J.: Impact of Different ActiveSpeech-Ratios on PESQ’s Predictions in Case of Independent and Dependent Losses (in Presence of Receiver-Side Comfort-Noise), Radioengineering, vol.19, No.1, Part 1, April 2010, pp. 79-88. (ISI Thomson)  Počta, P., Terpák, T.: Packet Loss and Coding Impact on Quality of Synthesized Speech Predicted by PESQ and P.563 Models, V zborníku konferencie MESAQIN 2010, Praha.  Jarina, R., Tichá D.: Design and evaluation of speech communication interfaces, In: Juhár, J., et al: Speech technologies in telecommunication and information systems, EQUILIBRIA, Košice 2011, pp. 395-421. (In Slovak)  Hric, M., Chmulík, M., Jarina, R: Model Parameters Selection for SVM Classification – An Application to Speaker Recognition, Proc. of Int. Workshop Digital Technologies 2010, Žilina, 11-12 Nov 2010.

36

Department of telecommunications and multimedia

COMMON RATIO DISTRIBUTOR OF HEATING EXPENSES assoc. prof. Ladislav Schwartz, PhD.

Common ratio distributor of heating expenses  Absolute measurers heat demand:  are high accurate and thereby also expensive,  setting oneself on entrance heating object,  Ratio measurers heat demand:  are adequate exact,  are cheap,  setting oneself in flat.

Faculty of Electrical Engineering

38

Ratio measurers heat demand solve two patents:

 UV 5462 SCHWARTZ, L., PERKO, P.: Way exploitation thermistors in scanners distributors heating expanses.  UV 5294, SCHWARTZ, L., PERKO, P.: Scheme measuring central common electronic distribution heating expenses.

Faculty of Electrical Engineering

39

Their object are:  Modification thermistors like this, that curve scanning temperature respond to temperature, performance and type heater radiator,  Data processing from consumers heat, that data on display answered ratio heat demand, specific facilities flat and prevent speculations,  Automatic sending data in centre on invoicing.

Faculty of Electrical Engineering

40

10000 9000

9000

8000 7100

7000

P=f(Ts)

6000 5310

5000 4000 3650 3000 2150

2000

1000

870

0

0 0

10

20

30

40

50

60

70

80

90

Ts

Faculty of Electrical Engineering

41

Faculty of Electrical Engineering

42

Common ratio distributor of heating expenses       

1 – Scanner with protection, 2 – Multiplexor, 3 – Converter, 4 – Microprocesor control, 5 – Display with consumer data, 6 – Communication interface, 7 – Display with service data.

Faculty of Electrical Engineering

43

Department of telecommunications and multimedia Vega, 1/4065/07

Positioning methods for wireless ad-hoc networks Ing. Peter Brída, PhD.

Abstract On the basis of the analysis there will be proposed solutions of positioning algorithms and location systems for these networks. Proposal of the new progressive positioning algorithms is expected in the project. The solution of this problem can lie in proposal of hybrid positioning method on the basis of proper combination of particular positioning methods (algorithms). The other solution can be realized by implementation of modern technologies, e.g. adaptive antenna system. On the basis of suggested positioning method will be proposed location system. The location system should combine positives of particular methods to create the best location system proposal. It is necessary to consider not only positioning accuracy, but also increase of operation load, which arises from implementation of location system to the network. Faculty of Electrical Engineering

45

Positioning error versus the number of reference nodes

Faculty of Electrical Engineering

46

Selected publications  BRIDA, P., CEPEL, P., DUHA, J.: Mobile Positioning in Next Generation Networks (Chapter XI). In Kotsopoulos, S. & Ioannou, K. (Ed.), Handbook of Research on Heterogeneous Next Generation Networking: Innovations and Platforms (pp. 223 - 252). New York, Hershey: IGI Global (Information science reference), 10/2008. ISBN 978-1-60566108-7 (hardcover), ISBN 978-1-60566-109-4 (ebook). ABC1  BENIKOVSKY, J., BRIDA, P.: Positioning System Based on Fingerprinting Method for Mobile Cellular Networks. The Mediterranean Journal of Computers and Networks, Volume 5, Issue 2/2009, pp. 59-67, ISSN 1744-2397. (1) INSPEC indexed  BRIDA, P. - MACHAJ, J. - DUHA, J.: A Novel Optimizing Algorithm for DV based Positioning Methods in ad hoc Networks, ELEKTRONIKA IR ELEKTROTECHNIKA (Electronics and Electrical Engineering), No. 1(97), 2010, pp. 33-38, ISSN 1392-1215.

Faculty of Electrical Engineering

47

Selected publications  BRIDA, P. - BENIKOVSKY, J.: Radio Map Framework for GSM Positioning, Communications, Scientific Letters of the University of Žilina, vol. 11, no. 4, EDIS, Žilina 2009, pp. 24-27, ISSN 1335-4205. (1) indexované do SCOPUS  BRIDA, P., MAJER, N., DUHA, J., CEPEL, P.: A Novel AoA Positioning Solution for Ad Hoc Networks Based on Six-Port Technology. The Second Joint IFIP Wireless and Mobile Networking Conference WMNC’2009, September 911, 2009, Gdańsk, Poland. ISBN 978-3-642-03840-2. (1)  KRNAC, B., HARING, J.: Improving of UHF RFID Pattern Steering by Phased Antenna Array, 18th International Conference RADIOELEKTRONIKA 2008, 18th International Conference Radioelektronika, Prague, CZECH REPUBLIC, April 24-25, 2008. ISBN: 978-1-4244-2087-2. (0.8)  BRÍDA, P., DÚHA, J., KRASNOVSKÝ, M.: On the Accuracy of Weighted Proximity Based Localization in Wireless Sensor Networks. in IFIP International Federation for Information Processing, Volume 245, Personal Wireless Communications, eds. Simak, B., Bestak, R., Kozlowska, E., (Boston: Springer), pp. 423-432. ISBN: 978-0-387-74158-1. (1)

Faculty of Electrical Engineering

48

Department of telecommunications and multimedia Vega, 1/0392/10

The research of mobile nodes positioning in wireless sensor networks Ing. Peter Brída, PhD.

Abstract Proposal of the new progressive positioning algorithms is expected in the project, which will result from analysis of current situation in wireless sensor networks positioning. The solution of this problem could lie in proposal of hybrid positioning method on the basis of proper combination of particular positioning methods (algorithms). It is necessary to consider not only positioning accuracy, but also increase of operation load, which arises from implementation of location system to the network.

Faculty of Electrical Engineering

50

Positioning in wireless sensor networks 1

+

+

+

0.9 0.8

+

DV-Hop DV-Distance CMP WEP

0.7

CDF [%]

0.6

+

0.5 0.4 0.3 0.2 0.1 0

0

10

20

30

40

50 60 RMSE [m]

70

80

90

100

Faculty of Electrical Engineering

51

Selected publications  BRIDA, P.- MACHAJ, J. - BENIKOVSKY J. - DUHA, J.: An Experimental Evaluation of AGA Algorithm for RSS Positioning in GSM Networks, ELEKTRONIKA IR ELEKTROTECHNIKA (Electronics and Electrical Engineering), No. 8(104), 2010, pp. 113-118, ISSN 1392-1215.  BRIDA, P., MACHAJ, J., GABORIK, F., MAJER, N.: Performance Analysis of Positioning in Wireless Sensor Networks, Przegląd Elektrotechniczny (Electrical Review), vol. 87, Iss. 5, pp. 257-260, ISSN: 0033-2097, 2011 (0,7).  BENIKOVSKY J. - BRIDA, P. - MACHAJ, J.: Localization in Real GSM Network with Fingerprinting Utilization, 2nd International ICST Conference on Mobile Lightweight Wireless Systems MobiLight 2010, LNICST 45, pp. 699–709, Barcelona, Spain, 10-12 May 2010, ISBN: 978963-9799-91-2

Faculty of Electrical Engineering

52

Selected publications  MACHAJ, J. - BRIDA, P.: Performance Comparison of Similarity Measurements for Database Correlation Localization Method, 3rd Asian Conference on Intelligent Information and Database Systems, ACIIDS 2011, Daegu, South Korea, pp. 452-461, ISBN 978-3-642-20041-0, 2011 (0,2).  BRIDA, P., GABORIK, F., DUHA J., MACHAJ, J.: Indoor Positioning System Designed for User Adaptive Systems, 3rd Asian Conference on Intelligent Information and Database Systems, ACIIDS 2011, Daegu, South Korea, pp. 237 – 245, ISBN 978-3-642-19952-3, 2011 (0,85).  MACHAJ, J. - BRIDA, P. - TATAROVA, B.: Impact of the Number of Access Points in Indoor Fingerprinting Localization, 20th International Conference Radioelektronika, RADIOELEKTRONIKA 2010, Brno, Czech Republic, 19-21 April 2010, pp. 83-86, ISBN: 978-1-4244-6320-6  MACHAJ, J. – BRIDA, P. - DUHA, J.: Localization Techniques for Sensor Networks, Proceedings of Knowledge in Telecommunication and Optics KTTO 2010, Ostrava, Czech Republic, 9 -10 December 2010, pp. 64-68, ISBN 978-80-248-2330-0 (0,35)

Faculty of Electrical Engineering

53

Department of telecommunications and multimedia APVV, LPP-0126-09

Progressive mobile positioning in indoor environment by means of wireless networks assoc. prof. Ján Dúha, PhD. Ing. Peter Brída, PhD.

Abstract The project is focused on improving of a mobile object positioning by means of various wireless networks (platforms of heterogeneous wireless networks). The increasing of positioning accuracy can be achieved by means of various ways, e.g. the design of new positioning approach or improving of current approaches. You can image the mobile object as mobile station works at various technological platforms of heterogeneous wireless networks. These platforms are actively used for estimation of mobile station position. The possible are cellular networks, ad hoc networks, sensor networks etc. The positioning accuracy depends on used platform and various environments.

Faculty of Electrical Engineering

55

Measured 0.25

Frequency

0.2 0.15 0.1 0.05 0 -60

-58

-56

-54

-52 -50 RSS [dBm] Simulated

-48

-46

-44

-42

-58

-56

-54

-52 -50 RSS [dBm]

-48

-46

-44

-42

0.25

Frequency

0.2 0.15 0.1 0.05 0 -60

0,035 Manhattan distance

Mean computing time [s]

0,03

Euclidean distance

0,025

Minkowski distance 0,02 Canberra distance 0,015 Sorensen distance 0,01 Angular separation 0,005 0,0025 0

Correlation coefficient Similarity measurement

Faculty of Electrical Engineering

56

Selected publications  BRIDA, P. - MACHAJ, J. - DUHA, J.: A Novel Optimizing Algorithm for DV based Positioning Methods in ad hoc Networks, ELEKTRONIKA IR ELEKTROTECHNIKA (Electronics and Electrical Engineering), No. 1(97), 2010, pp. 33-38, ISSN 1392-1215. (25% - podiel projektu LPP–0126–09), IF journal, indexované do Thompson ISI, All-Russian Institute of Scientific and Technical Information (VINITI), EBSCO Publishing  BRIDA, P.- MACHAJ, J. - BENIKOVSKY J. - DUHA, J.: An Experimental Evaluation of AGA Algorithm for RSS Positioning in GSM Networks, ELEKTRONIKA IR ELEKTROTECHNIKA (Electronics and Electrical Engineering), No. 8(104), 2010, pp. 113-118, ISSN 1392-1215. (25%), IF journal, indexované do Thompson ISI, All-Russian Institute of Scientific and Technical Information (VINITI), EBSCO Publishings  BRIDA, P., MACHAJ, J., GABORIK, F., MAJER, N.: Performance Analysis of Positioning in Wireless Sensor Networks, Przegląd Elektrotechniczny (Electrical Review), vol. 87, Iss. 5, pp. 257-260, ISSN: 0033-2097, 2011 (0,3).

Faculty of Electrical Engineering

57

Selected publications  BRIDA, P. - MACHAJ, J. - BENIKOVSKY J. - DUHA J.: A New Complex Angle of Arrival Location Method for ad hoc Networks, 7th Workshop on Positioning, Navigation and Communication 2010 WPNC'10, pp. 284-290, Dresden, Germany, 11-12 March, 2010, ISBN CD-ROM: 978-14244-7157-7. (30%), indexované do IEEE, Scopus, Thompson ISI  BENIKOVSKÝ J. - BRIDA, P. - MACHAJ, J.: Localization in Real GSM Network with Fingerprinting Utilization, 2nd International ICST Conference on Mobile Lightweight Wireless Systems MobiLight 2010, LNICST 45, pp. 699–709, Barcelona, Spain, 10-12 May 2010, ISBN: 978963-9799-91-2 (5%), indexované do Springer, Thompson ISI  MACHAJ, J. - BRIDA, P. - TATAROVA, B.: Impact of the Number of Access Points in Indoor Fingerprinting Localization, 20th International Conference Radioelektronika, RADIOELEKTRONIKA 2010, Brno, Czech Republic, 19-21 April 2010, pp. 83-86, ISBN 978-1-4244-6320-6 (18%), indexované do IEEE, Scopus, Thompson ISI

Faculty of Electrical Engineering

58

Selected publications  MACHAJ, J. – BRIDA, P. - DUHA, J.: Localization Techniques for Sensor Networks, Proceedings of Knowledge in Telecommunication and Optics KTTO 2010, Ostrava, Czech Republic, 9 -10 December 2010 pp. 64-68, ISBN 978-80-248-2330-0 (0,65), indexované Thompson ISI  MACHAJ, J. - BRIDA, P.: Performance Comparison of Similarity Measurements for Database Correlation Localization Method, 3rd Asian Conference on Intelligent Information and Database Systems, ACIIDS 2011, Daegu, South Korea, pp. 452-461, ISBN 978-3-64220041-0, 2011 (0,8).  BRIDA, P., GABORIK, F., DUHA J., MACHAJ, J.: Indoor Positioning System Designed for User Adaptive Systems, 3rd Asian Conference on Intelligent Information and Database Systems, ACIIDS 2011, Daegu, South Korea, pp. 237 – 245, ISBN 978-3-642-19952-3, 2011 (0,15).

Faculty of Electrical Engineering

59

Department of Telecommunications and Multimedia

DEVELOPMENT OF THE VIDEOCONFERENCE ARCHIVE SYSTEM AVE AND USERS APPLICATIONS FOR THE EVO SYSTEM Ing. Michal Kuba, PhD. [email protected]

AVE EVO Basic information about the project  Principal Investigator : RNDr. Pavel Murín, CSc. (UPJŠ Košice)  Principal Investigator for University of Zilina: Ing. Michal Kuba, PhD.  Project Number : APVV–0732–07  Project Duration: From 06/01/2008 to 12/31/2010

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AVE EVO EVO  a videoconferencing system, which is used primarily for virtual collaboration between scientists and educators. EVO is based on VRVS videoconferencing systems (http://evo.caltech.edu). VRVS system is now replaced by EVO system. EVO is the result of technology transfer from California Institute of Technology (Caltech). Project Objectives: 

Create an archive system AVE for videokonferencing system EVO



Create a users application for the EVO system Faculty of Electrical Engineering

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Testing Echo-Cancellation Module for Video Conference System AVE EVO

Development of the Application for real-time testing of the software Echo Canceller from Jean-Marc Valin, using simulation of the remote end.

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Department of Telecommunication and Multimedia

ALGORITMS FOR CAPTURING, TRANSMITION AND RECONSTRUCTION OF 3-D IMAGE FOR 3-D IP TELEVISION Project VEGA No:1/0655/10 Dr. Ing. Martin Brezňan

Abstract The scientific project deals with the research of methods and their algorithms for extraction of 3-D scene model related to a preparation of 3-D television (3-D IPTV) international standards. In the project algorithms of 3-D image reconstruction from multicamera system by various methods will be investigated. The methods have to be suitable for 3-D image data transmitting through Internet. The 3-D model should be applicable to calibrate multicamera system at transmitter side to improve compression rate in 3-D codes, to replace and correct 3-D image in the case of lost packets, and to help to reconstruct 3-D image of the scene in the display at a receiver side. The project follows our previous research on the hybrid method for 3-D image reconstruction from stereo pictures. To improve precision of the 3-D model, a new hybrid method will be then followed by selected optimal image segmetation method. In case of multi-camera system, we would like to fuse of camera twins results into final 3-D model

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RESULTS: 1.input image of Castle LEVICE (in SVK)

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RESULTS: 2.input image of Castle LEVICE (in SVK)

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Reconstructed 3D model

Department of Telecommunication and Multimedia

THE INVESTIGATION OF THE METHODS OF DETECTION OF THE CRITICAL CONDITIONS IN TELECOMMUNICATION NETWORKS FROM THE SPEECH QUALITY POINT OF VIEW Ing. Peter Počta, PhD.

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Annotation The main aim of this project was to investigate the methods of detection of critical conditions in telecommunication networks from speech quality point of view as well as adaptation algorithms. The role of adaptation algorithms is to change the transmission parameters of given connection in order to obtain the best possible quality. Besides main outputs of this project, the additional outputs have been achieved. Those other outputs relate to basic knowledge in speech quality, especially to impact of speech activity, transmission of synthesized speech impaired by time-varying impairments and changing the users’ perceptions of various combinations of speech quality impairments introduced by current telecommunication networks.

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Fig.1: VoIP link adaptation algorithm principle.

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Fig.2: Algorithm performance from the packet loss perspective. Fig.3: Performance of algorithm from the speech quality perspective.

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Publications (group A):  POČTA, P., MRVOVÁ, M., HOLUB, J.: Impact of Different Active-SpeechRatios on PESQ’s Predictions in Simulated VoIP Environment, In Acta Acustica and united with Acustica, Vol. 95, No.5, 2009, str. 950-957, ISSN 1610-1928, (ADC), indexed to Current Content.  POČTA, P., TURSKÝ, J., PALÚCH, P.: Design and Evaluation of novel VoIP link adaptation algorithm based on GTS function, V AEÜ- Archiv f. Elektronik u. Übertragungstechnik International Journal of Electronics and Communication, vol. 64, No.3, 2010, str.191-201, ISSN 1434-8411, (ADC), indexed to Current Content.  POČTA, P, VLČKOVÁ, H., POLKOVÁ, Z., HOLUB, J.: Impact of Different Active-Speech-Ratios on PESQ’s Predictions in Case of Independent and Dependent Losses (in Presence of Receiver-Side Comfort-Noise), In Radioengineering, vol.19, No.1, Part 1, April 2010, str. 79-88, ISSN 12102512, (ADE), indexed to SCOPUS, Thomson Reuters Master Journal List

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 BRÍDOVÁ, I., VACULÍK, M., BRÍDA, P.: Impact of Background Traffic on VoIP QoS Parameters in GPON Upstream Link, In Elektronika ir Elektrotechnika, Kaunas, Litva, ISSN 1392-1215, (ADE), indexed to Thomson Reuters Master Journal List.  POČTA, P.: The combined effect of signal strength and background traffic load on speech quality in IEEE 802.11 WLAN, In Radioengineering, vol.20, No.1, Part I, pp. 174-178, ISSN 1210-2512, (ADE), indexed to SCOPUS, Thomson Reuters Master Journal List.  POČTA, P., MRVOVÁ, M., KORTIŠ, P., PALÚCH, P., VACULÍK, M.: A systematic study of PESQ’s behavior in simulated VoIP environment (from reference signal characteristics perspective), MESAQIN 2008, Praha, Česká republika, 2008, str. 13-21, ISBN 978-80-01-04193-2, (AFC), indexed to Thomson Reuters.

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 POČTA, P, VLČKOVÁ, H., POLKOVÁ, Z.: Impact of Different ActiveSpeech-Ratios on PESQ’s Predictions in Case of Independent and Dependent Losses, MESAQIN 2009, Praha, Česká republika, 2009, str. 13-20, ISBN 978-80-01-04361-5, (AFC), indexed to Thomson Reuters.  POČTA, P, BILŠAK, M., ROUSEKOVÁ, J.: Impact of Fragmentation Threshold Tuning on Performance of Voice Service and Background Traffic in IEEE 802.11b WLANs, V zborníku 20th International Conference Radioelektronika 2010, Brno, Česká republika, str.75-78, ISBN 978-1-4244-6319-0, (AFC), indexed to IEEE a Thomson Reuters.  POČTA, P., TERPÁK, T.: Packet Loss and Coding Impact on Quality of Synthesized Speech Predicted by PESQ and P.563 Models, MESAQIN 2010, Praha, Česká republika, (AFC), indexed to Thomson Reuters.

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Publications (group B):  POČTA, P., KUBÍK, D.: Impact of short retry-limit tuning on speech quality in IEEE 802.11b WLANs, V The Mediterranean Journal of Electronics and Communications, No.4, Vol. 4, 2008, str. 90-95, ISSN 1744-2400, (ADE), indexed to INSPEC.  POČTA, P., HUDEC, R., BOJMÍR, M.: Performance Evaluation of Video Transmission over IEEE 802.11b WLANs from the Video Quality Perspective, V The Mediterranean Journal of Computers and Networks, Vol.5, No.2, 2009, str. 53-58, ISSN 1744-2397, (ADE), indexed to INSPEC.

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Department of Telecommunication and Multimedia May 2011

Overwiew of research activities

Main areas of research activities Signal processing and analysis focusing on:     

Image signals – semantic of analysis Audio signals – analysis and processing Mobile radio networks Location technologies based on WiFi Network applications in a fixed networks

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EDA A-0930-RT-GC HECTOR - HElicopter fuselage Crack moniToring and prognosis through on-board sensOR network Principal investigator:

assoc. prof. Hudec Róbert, PhD.

 HECTOR is a project aimed at: monitoring and prognosis of defects fuselage of helicopter of using on-board the networks sensors. Analysis of sensor technologies for SHM (Structural Health Monitoring) helicopters, design and modeling wireless sensor networks,  Development of new SHM algorithms for real-time analysis of a helicopter fuselage

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EDA A-0930-RT-GC HECTOR - HElicopter fuselage Crack moniToring and prognosis through on-board sensOR network The research team:  The Department of Mechanical Engineering of the Politecnico di Milano (POLIMI), Italy  AGUSTAWESTLAND, Italy  VITROCISET , Italy  Consorzio Milano Ricerche (CMR)  SINTEF ICT, Norway  Dpt. of Telecommunications of AGH University of Science and Technology, Poland  Laboratory of Technology & Strength of Materials (LTSM-UP), Patras, Greece Faculty of Electrical Engineering

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VEGA 1/0392/10: The research of mobile nodes

positioning in wireless sensor networks Principal investigator: Ing. Peter Brída, PhD. The research of progressive localization algorithms in wireless sensor networks  Brída a col.: A Novel Optimising Alghorithm for DV based Positio-ning Methods in ad-hoc Networks. EIRE No.1, 2010, ISSN 1392-1215  Brída a col.: An Experimental Evaluation of AGA Alghorithm for RSS positioning in GSM Networks. EIRE No.8, 2010, ISSN 1392-1215  Brída a col.: Radio Map Framework for GSM Positioning. Communications, Vol. 11, No.4, 2009. ISSN 1335-4205 Faculty of Electrical Engineering

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VEGA 1/0655/10: Algorithms for capturing, transmission and reconstruction of 3D image for 3D IP television Principal investigator:

assoc. prof. Roman Jarina, PhD, Ing. Martin Brezňan, PhD.

 The research methods and algorithms for reconstruction of 3D scene and extraction 3D image with using of multi-camera systems  Optimization of codec's for 3D TV and methods of correction of errors in the transmission of data flows  Kamencay, P. , Lukac, P.: The Architecture of 3D Reconstruction Algorithm through Segmentation of stereo Imaging Sequence. KTTO Ostrava, 2010 Faculty of Electrical Engineering

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VEGA 1/0570/10: The research algorithms for automatic analysis of multimedia data. Principal investigator:

assoc. prof. Róbert Hudec, PhD.

The research methods and algorithms for:  Automatic video annotation, processing video data stream in real time  Abstract of static photographs in relation to web applications, search engines INIRES and etc.  Dubcová, Z., Lukáč, P.: Cut Detection Algorithm based on the Histogram Differences. TSP 2010, Baden, Austria

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VEGA 1/0336/10: Enhancement of QoS parameters in MANET and mesh networks Principal investigator:

prof. Ing. Vladimír Wieser, PhD.

The Development algorithms for distributed selection of transport channel in cooperation with antenna system adaptation (switching) with the objectives:  Minimize mutual interference  Maximize reuse channel effectiveness

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APVV LPP-0126-09 The research the localization of mobile nodes in wireless sensor networks Principal investigator:

assoc. prof. Ján Dúha, PhD., Ing. Brída, PhD.

Development of algorithms to increasing accuracy of positioning of mobile objects in space using different of radio networks  Brída, P. a col.: A New Complex Angle of Arrival Location Method for ad-hoc Networks. WPNC10, Dresden 2010

 Benikovský, J. a col.: Localisation in Real GSM Network with Fingerprinting utilisation. LNICST Barcelona, 2010

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APVV-0732-07 EVO Development of the videoconference archive system AVE and users applications for the EVO system Principal investigator:

Ing. Michal Kuba, PhD.

Development of videoconferencing system by technology transfer from California Institute of Technology (Caltech) Development of Echo Cancellers and conference applications

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ITMS 26220220134 The research of technology and products for intelligent and technical textiles Investigator for ŽU:

assoc. prof. Róbert Hudec, PhD.

Design preparation of intelligent textiles technology and implementation for biomedical data sampling.  Analysis of options for biomedical data sampling by intelligent textile.  Development of textiles with passive intelligence

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Projects in cooperation with Faculty Hospital of Martin Principal investigator:  

assoc. prof. Róbert Hudec, PhD.

26220220021 Translational medicine center 26220220022 Creation of a new diagnostic algorithm for selected cancers (Signal processing in the field of medicine. The research of algorithms for image analysis, bio-data visualization and etc.

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Projects in cooperation with Faculty Hospital of Martin (2) Principal investigator:

assoc. prof. Róbert Hudec, PhD.

 ITMS 26220220407 Competence centre for research and development in field of diagnostics and therapy of oncological affections (design of new methods for processing biomedicine data with the use of newest approaches and knowledges from fields of computer vision, graphic, statistics, math analysis, artificial intelligence, neural networks and biomedicine engineering). Analysis of contemporary (available) interfaces, standards and norms. Research in field of advanced methods of computer processing of biomedicine data.

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ITMS 26220220415 Brokers centre of air transport for technologies and knowledge transfer to transport and transport Principal investigators:



Ing. Peter Brída, PhD. prof. Ing. Milan Dado, PhD.

Activities of our group are focused on research of integrated location based services. Concept proposal for transfer knowledge resulted from research of integrated location based services. The concept should be focused of transfer to various kinds of transports. The aim is to verify the proposed concept by means of practical experiments.

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Research tasks focused on the quality of audio and video signals for unreliable network transmission Principal investigators:





Ing. Peter Počta, PhD., assoc. prof. Roman Jarina, PhD.

Počta, P. and col.: Design and Evaluation of novel IP link Adaptation Algorithm based on GTS Function. JEC Vol. 64, no. 3, 2010. ISSN 1434-8411 Reis, M., Gardlo, B.: Audiovisual Quality Estimation for Mobile Video Services. IEEE SAC vol. 28, No.3, 2010.

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Hardware and software equipment obtained over the last year :      

4 pieces 16core 16GB workstations 2 pieces 8core 8GB 2TB server 2 pc 2,4 TB SAS disc raid array 4 pieces 2,5kW UPS, 1 piece 3 kW UPS 2 pieces 3kW portable generators 3 pieces Traffic cameras with IP connectivity to 195km/h

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Hardware and software equipment obtained over the last year (2):  1 ks Notebook for external use (military version)  D/A oscilloscopes, spectrometers, generators, programmer  Mobile AV presentation technology  DC Power Supplies 2x 0-40V/ 0- 3A, 2x0-32V / 0-10A programmable 1x 0-300V / 0-1A  AC Power Supply - 0 - 255V / 1A – programmable  Multimeters table 6.5 digit display, portable 3.3/4 digit display  LCG bridge  Digital Oscilloscopes - 4x1GHz, analog 2x100MHz Faculty of Electrical Engineering

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Hardware and software equipment obtained over the last year (3):  Signal generator with a definable time course of 1uHz up to 50MHz programmable  Logic analyzer  Programmer programmable devices  Analyzer RF N-poles with the possibility of spectral analysis of 9 kHz - 6 GHz  Cisco switches and routers, HP Proliant server - Intel Xeon,...  Analyzer and generator network traffic Avalanche 290  Program NetDisturber, IP traffic analyzer Hammer,...

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Hardware and software equipment obtained over the last year (4):  Equipment for shouldering SMD with video preview,  Tin bath for wave soldering,  Soldering kit Weller with aspirator, In a short time will be added:    

MINISOL – equipment for lead free soldering, CNC drill for DPS, Equipment for electroplating coating, Multilayer printer DPS and other...

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Department of Telecommunication and Multimedia

Thank you for your attentions!

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