António Navarro Rodrigues

António Navarro

Academic position:	Assistant Professor
Joining date:	01-01-1999
Roles in IT:	Senior Researcher
Thematic Line:	Wireless Technologies
Group:	Mobile Networks – Av

Email: Send Email
Address: IT – Aveiro
Instituto de Telecomunicações
Campus Universitário de Santiago
P-3810-193 AVEIRO - PORTUGAL
Tel: +351 234 377 900
Fax: +351 234 377 901

Alternative Personal Web Page

https://www.orcid.org/0000-0002-8692-943X

Scientific Achievements

Degrees

PhD, University of Newcastle upon Type, 01-01-1996
MSc, Universidade de Coimbra, 01-01-1993
Licenciatura, Universidade de Coimbra, 01-01-1989

Affiliations

IEEE - Institute of Electrical and Electronics Engineers, 01-01-2009, Senior Member
Universidade de Aveiro, 01-01-1997, Prof. Auxiliar

Expertise Topics

Video Coding
Video Transmission
Digital Television

Academic Activities

1Lecture courses

Multimedia Coding, Carnegie Mellon University, Master

3Supervision of PhD theses

As Supervisor

Sinalética Digital sobre DAB, PhD Student, Paulo Alexandre, Defended 02-2017
Motion Estimation and its Hardware Implementation, PhD Student, Purnachand Nalluri, Defended 02-2016

As Co-supervisor

All aRound panoramic Vision for smart and secure environments (ARoundVision), PhD Student, Jose Nunes dos Santos Filipe, Expected conclusion 07-2024

7Supervision of MSc theses

As Supervisor

Agregados de Antenas para Redução de Interferências em Telecomunicações, MSc Student, Diogo Afonso Rodrigues Nunes, Concluded 12-2021
Redução de Interferências para DVB-T Usando um Agregado de Antenas, MSc Student, Diogo Henrique Alves Martins, Concluded 12-2021
Wideband 500W Power Amplier for UHF, MSc Student, Micael Moreira Monteiro, Concluded 12-2019
Transform Co-Processor for AV1 Video Coding Standard, MSc Student, Miguel Oliveira Inocêncio, Concluded 10-2019
An antenna for interference reduction in telecommunications, MSc Student, Pedro Alberto Jardim Mostardinha, Concluded 12-2018

As Co-supervisor

HEVC Video Coding and Transmission through Wireless MIMO Networks, MSc Student, Luis da Graça Magalhães, Concluded 12-2016
Planeamento de cobertura em redes celulares de banda larga, MSc Student, Marco Araújo, Concluded 07-2008

1Supervision of Research grants

As Co-supervisor

Estimador de movimento em CMOS, Research Grant, João Costa, Concluded 06-2007

Publications

1Books Chapters

J. Filipe, A. Navarro, L.M. Távora, S.M.M. Faria, P.A. Assunção, Machine Learning for Green Smart Video Surveillance, Chapter in, Computational Intelligence Techniques for Green Smart Cities. Green Energy and Technology, Mohamed Lahby, Ala Al-Fuqaha, Yassine Maleh, Springer, Cham, Berlin, 2022

7Papers in Journals

A. Navarro, P. Mostardinha, T. Varum, J. N. Matos, S. Maslovski, Double-Dielectric Microstrip Ultrahigh-Frequency Antenna for Digital Terrestrial Television, Applied Sciences (Switzerland), Vol. 10, No. 23, pp. 8640 - 8640, December, 2020 | BibTex
P Nalluri, L. Alves, A. Navarro, Complexity reduction methods for fast motion estimation in HEVC, Signal Processing: Image Communication, Vol. 39, No. A, pp. 280 - 292, November, 2015 | BibTex
S. Moiron, S.M.M. Faria, A. Navarro, V. Silva, P.A. Assunção, Video transcoding from H.264/AVC to MPEG-2 with reduced computational complexity, Signal Processing: Image Communication, Vol. 24, No. 8, pp. 637 - 650, September, 2009,
| Abstract | BibTex
A. Navarro, J. Angeja, L. Carvalho, A New Packet Loss Model of the IEEE 802.11g Wireless Network for Multimedia Communications, IEEE Transactions on Consumer Electronics, Vol. 50, No. 16, pp. 809 - 814, August, 2005 | BibTex
A. Navarro, Fast Multiplication-free QWDCT for DV Coding Standard, IEEE Transactions on Consumer Electronics, Vol. 50, No. 1, pp. 180 - 187, February, 2004 | BibTex
A. Navarro, M. Rostami, Counter Demodulates Narrowband FSK without Synchronization, Vol. 49, No. 16, pp. 87 - 88, June, 2001 | BibTex
V. Silva, L. A. S. C. Cruz, F. Lopes, A. Navarro, L. V. Sá, Multiprocessor based image coding, Microprocessing and Microprogramming (EUROMICRO), Vol. 32, No. 1-5, pp. 343 - 348, August, 1991 | BibTex

56Papers in Conferences

R. Antonio, S.M.M. Faria, L.M. Távora, A. Navarro, P.A. Assunção, Learning-based compression of visual objects for smart surveillance, International Conference on Image Processing Theory, Tools and Applications IPTA, Salzburg, Austria, April, 2022,
| Abstract | BibTex
S. Maslovski, A. Abraray, K. Kaboutari, D. Nunes, A. Navarro, Analytical and Numerical Modeling of Reconfigurable Beamforming Metasurfaces, Progress in Electromagnetics Research Symp. - PIERS, Hangzhou, China, Vol., pp. -, November, 2021 | BibTex
J. F. M. Carreira, S.M.M. Faria, L.M. Távora, A. Navarro, P.A. Assunção, Attention-driven tile splitting method for improved efficiency of omnidirectional versatile video coding, IEEE International Conf. on Image Processing - ICIP, Conference online, Vol., pp. 2149 - 2153, October, 2021,
| Abstract | Full text (PDF 1 MB) | BibTex
J. Filipe, J. F. M. Carreira, L.M. Távora, S.M.M. Faria, A. Navarro, P.A. Assunção, Tree-Based Ensemble Methods for Complexity Reduction of VVC Intra Coding, Conference on Telecommunications - ConfTele, Conference online, February, 2021,
| Abstract | Full text (PDF 198 KBs) | BibTex
J. F. M. Carreira, S.M.M. Faria, L.M. Távora, A. Navarro, P.A. Assunção, 360º Video Coding using Adaptive Tile Partitioning, Conf. on Telecommunications - ConfTele, Leiria, Portugal, February, 2021,
| Abstract | BibTex
S. Maslovski, A. Abraray, A. Navarro, N.B.C. Carvalho, Towards Smart Beamforming Utilizing Neural- Networked Programmable Metasurfaces, Conference on Telecommunications - ConfTele ConfTELE, Leiria, Portugal, Vol., pp. -, February, 2021 | BibTex
J. F. M. Carreira, S.M.M. Faria, L.M. Távora, A. Navarro, P.A. Assunção, Scalable Coding of 360-degree Video for Streaming Adaptation at 5G Network Edges, IEEE International Symposium on Broadband Multimedia Systems and Broadcasting BMSB, Paris, France, October, 2020,
| Abstract | BibTex
J. F. M. Carreira, S.M.M. Faria, L.M. Távora, A. Navarro, P.A. Assunção, Versatile Video Coding of 360º Video using Adaptive Resolution Change, IEEE International Conference on Image Processing ICIP, Conference online, Vol., pp. 3398 - 3402, October, 2020,
| Abstract | BibTex
J. Filipe, J. F. M. Carreira, L.M. Távora, S.M.M. Faria, A. Navarro, P.A. Assunção, Extremely Randomised Trees for Computational Complexity Reduction of Omnidirectional Intra Video Coding, Portuguese Conf. on Pattern Recognition - RecPad, Évora, Portugal, Vol., pp. 77 - 78, October, 2020,
| Abstract | Full text (PDF 205 KBs) | BibTex
S. Maslovski, A. Abraray, N.B.C. Carvalho, A. Navarro, Beamforming with Neural-Networked Programmable Metasurfaces, International Congress on Engineered Material Platforms for Novel Wave Phenomena – Metamaterials, New York, United States, Vol. -, pp. 225 - 227, October, 2020 | BibTex
J. Filipe, J. F. M. Carreira, L.M. Távora, S.M.M. Faria, A. Navarro, P.A. Assunção, Complexity Estimation for Load Balancing of 360-Degree Intra Versatile Video Coding, IEEE International Workshop on Signal Processing Systems - SiPS, Coimbra, Portugal, Vol., pp. 1 - 5, October, 2020,
| Abstract | BibTex
J. F. M. Carreira, S.M.M. Faria, L.M. Távora, A. Navarro, P.A. Assunção, Versatile Video Coding of 360-Degree Video using Frame-based FoV and Visual Attention, IEEE International Symposium on Multimedia (ISM), San Diego, United States, December, 2019,
| Abstract | BibTex
J. Filipe, J. F. M. Carreira, L.M. Távora, S.M.M. Faria, A. Navarro, P.A. Assunção, Omnidirectional Video Coding: New Coding Tools and Performance Evaluation of VVC, Conference on Telecommunications - ConfTele, Lisboa, Portugal, June, 2019,
| Abstract | Full text (PDF 174 KBs) | BibTex
R. Kumar, L.F. Ferreira, P.A. Assunção, A. Navarro, Retargeting 4K Video for Mobile Access Using Visual Attention and Temporal Stabilization., International Symposium on Signal, Image, Video and Communications ISIVC, Rabat, Morocco, November, 2018 | BibTex
R. Kumar, L.F. Ferreira, P.A. Assunção, A. Navarro, Retargeting UHD 4k Video for Smartphones, IEEE International Conference on Consumer Electronics -Berlin ICCE-Berlin, Berlin, Germany, September, 2018 | BibTex
I. Elfergani, A. Hussaini, J. Rodriguez, A. Navarro, P. Pinho, R.A. Abd-Alhameed Abd-Alhameed, Balanced antenna structure with slotted ground plane for LTE dual-band, Loughborough Antennas and Propagation Conf. – LAPC, Loughborough, United Kingdom, Vol. 1, pp. 1 - 5, November, 2016 | BibTex
I. Elfergani, A. Hussaini, J. Rodriguez, A. Navarro, P. Pinho, A. Mahmoud, R.A. Abd-Alhameed Abd-Alhameed, A small-size zigzag balanced antenna for LTE systems, IEEE Nanotechnology Council. 11th IEEE Nanotechnology Materials and Devices Conference (NMDC 2016) NMDC 2016, Toulouse, France, Vol. 1, pp. 1 - 2, October, 2016 | BibTex
Z. H. Hesabi, A. Navarro, A MULTILEVEL MEMORY-ASSISTED LOSSLESS COMPRESSION ALGORITHM FOR, European Signal Processing Conference EUSIPCO, Nice, France, Vol. 1, pp. 1 - 1, August, 2015 | BibTex
, L. Alves, A. Navarro, 'High Speed SAD Architectures for Variable Block Size Motion Estimation in HEVC Video Coding, IEEE International Conf. on Image Processing - ICIP, Paris, France, Vol. 1, pp. 1 - 1, October, 2014 | BibTex
P Nalluri, L. Alves, A. Navarro, High Speed Sad Architectures For Variable Block Size Motion Estimation In HEVC Video Coding, IEEE International Conf. on Image Processing - ICIP, Paris, France, Vol. 1, pp. 1233 - 1237, October, 2014 | BibTex
Z. H. Hesabi, A. Navarro, A MEMORY-ASSISTED LOSSLESS COMPRESSION ALGORITHM FOR MEDICAL IMAGES, IEEE International Conf. on Acoustics, Speech, and Signal Processing - ICASSP, Florence, Italy, Vol. 1, pp. 1 - 1, May, 2014 | BibTex
P Nalluri, L. Alves, A. Navarro, A novel SAD architecture for variable block size motion estimation in HEVC video coding, International Symp. on Systems on a Chip, Tampere, Finland, Vol. 1, pp. 1 - 4, October, 2013 | BibTex
, P Nalluri, L. Alves, A. Navarro, Fast Partitioning Depth Decision Based on Skipping Block Sizes in HEVC, IEEE International Conf. on Consumer Electronics - ICCE, Berlin, Germany, Vol. 1, pp. 1 - 1, September, 2013 | BibTex
, L. Alves, A. Navarro, Fast Motion Estimation Algorithm for HEVC Video Encoder, Conf. on Telecommunications - ConfTele, Castelo Branco, Portugal, Vol. 1, pp. 1 - 1, May, 2013 | BibTex
P Nalluri, L. Alves, A. Navarro, Fast Motion Estimation Algorithm for HEVC Video Encoder, Conf. on Telecommunications - ConfTele, Castelo Branco, Portugal, Vol. 1, pp. 1 - 4, May, 2013,
| Abstract | Full text (PDF 404 KBs) | BibTex
P Nalluri, L. Alves, A. Navarro, FPGA Based Synchronous Multi-Port SRAM Architecture for Motion Estimation, Jornadas sobre Sistemas Reconfiguráveis - REC, Coimbra (http://rec2013.isr.uc.pt/download/REC2013_actas.pdf), Portugal, Vol. 9, pp. 89 - 92, February, 2013,
| Abstract | BibTex
L. Alves, A. Navarro, Fast Motion Estimation Algorithm for HEVC, IEEE International Conf. on Consumer Electronics - ICCE, Berlin, Germany, Vol. 11, pp. 11 - 11, September, 2012 | BibTex
P Nalluri, L. Alves, A. Navarro, Fast Motion Estimation Algorithm for HEVC, IEEE International Conf. on Consumer Electronics - ICCE, Berlin, Germany, Vol. 3, pp. 34 - 37, September, 2012,
| Abstract | BibTex
L. Alves, A. Navarro, Improvments to TZ search Motion Estimation Algorithm for Multiview Video Coding, International Conf. on Systems, Signals and Image Processing - IWSSIP, Vienna, Austria, Vol. 11, pp. 11 - 11, April, 2012 | BibTex
P Nalluri, L. Alves, A. Navarro, Improvements to TZ search motion estimation algorithm for multiview video coding, International Conf. on Systems, Signals and Image Processing - IWSSIP, Vienna, Austria, Vol. 19, pp. 388 - 391, April, 2012,
| Abstract | BibTex
T. Silva, A. Navarro, H.264 Video Transmission over 2x2 OFDM-MIMO, IEEE International Conf. on Multimedia and Expo - ICME, Barcelona, Spain, Vol. 1, pp. 1 - 8, July, 2011 | BibTex
S. Moiron, S.M.M. Faria, P.A. Assunção, V. Silva, A. Navarro, Inter Mode Conversion of H.264 to MPEG-2 Video with Reduced Complexity, IEEE International Conf. on Consumer Electronics - ICCE, Las Vegas, United States, Vol. ., pp. . - ., January, 2008 | BibTex
S. Moiron, S.M.M. Faria, P.A. Assunção, V. Silva, A. Navarro, Mode Conversion for H.264 to MPEG-2 Video Transcoder, Picture Coding Symp., Lisbon, Portugal, Vol. ., pp. . - ., November, 2007 | BibTex
S. Moiron, S.M.M. Faria, P.A. Assunção, V. Silva, A. Navarro, Fast Interframe Transcoding from H.264 to MPEG-2, IEEE International Conf. on Image Processing - ICIP, San Antonio, United States, Vol. IV, pp. 69 - 72, September, 2007 | BibTex
S. Moiron, S.M.M. Faria, P.A. Assunção, V. Silva, A. Navarro, Low-complexity video content adaptation for legacy user equipment, International Conf. on Multimedia Communications, Nafpaktos, Greece, Vol. ., pp. . - ., August, 2007 | BibTex
S. Moiron, S.M.M. Faria, P.A. Assunção, V. Silva, A. Navarro, H.264/AVC to MPEG-2 Video Transcoding Architecture, Conf. on Telecommunications - ConfTele, Peniche, Portugal, Vol. 1, pp. 449 - 452, May, 2007 | BibTex
S.M.M. Faria, V. Silva, A. Navarro, R. Marques, P.A. Assunção, H.264 to MPEG-2 Conversion of Intra Coded Video, Conf. on Telecommunications - ConfTele, Peniche, Portugal, Vol. 1, pp. 445 - 448, May, 2007 | BibTex
P.A. Assunção, V. Silva, S.M.M. Faria, A. Navarro, Fast Conversion of H.264/AVC Integer Transform Coefficients into DCT Coefficients, International Conf. on Signal Processing and Multimedia Applications, Setubal, Portugal, Vol. 1, pp. 5 - 8, August, 2006 | BibTex
A. Navarro, F. Perdigão, Audio-visual Conference through the Ionosphere at 4 kbps, IEEE International Conf. on Multimedia and Expo - ICME, Taipei, Taiwan, Vol. 0, pp. 0 - 0, June, 2004 | BibTex
A. Navarro, F. Perdigão, Error Analysis of MPEG-4 HVXC Parameters at High Frequencies, IEEE International Conf. on Multimedia and Expo - ICME, Taipei, Taiwan, Vol. 0, pp. 0 - 0, June, 2004 | BibTex
A. Navarro, Multi-Conference over HF Packet Radio Channels, IEEE International Conf. on Multimedia and Expo - ICME, Taipei, Taiwan, Vol. 0, pp. 0 - 0, June, 2004 | BibTex
A. Navarro, R. Rodrigues, J. Angeja, J. Tavares, L. Carvalho, F. Perdigão, Video Conference over HF Packet Radio Channels, IEEE Military Communications Conf. - MILCOM, Boston, United States, Vol. 0, pp. 0 - 0, October, 2003 | BibTex
A. Navarro, R. Rodrigues, F. Perdigão, Significant Analysis of HVXC Speech Coding parameters at High Frequency, International Workshop on Interactive Rich Media Content Production - RICHMEDIA, Lausanne, Switzerland, Vol. 1, pp. 69 - 77, October, 2003 | BibTex
A. Navarro, B.F.C Gabriel, Optimal M-QAM/DAPSK Allocation in Narrowband OFDM Radio Channels”, Mathematical Techniques and Problems in Telecommunications, Mathematical Techniques and Problems in Telecommunications, Tomar, Portugal, Vol. 1, pp. 219 - 224, September, 2003 | BibTex
A. Navarro, M. Rostami, J. Tavares, J. Angeja, HF Channel Modelling for Real Time Packet Transmission, SPIE - Digital Wireless Communications, Orlando, United States, Vol. 0, pp. 0 - 0, April, 2003 | BibTex
A. Navarro, J. Tavares, A Common Channel Adaptation Approach for Video Coding, SPIE - Image and Video Communications and Processing, Santa Clara, United States, Vol. 1, pp. 440 - 449, January, 2003 | BibTex
A. Navarro, J. Tavares, Adaptive Joint H.263-Channel Coding for Memoryless Binary Channels, IEEE International Symp. on Personal, Indoor and Mobile Radio Commun - PIMRC, Lisbon, Portugal, Vol. 5, pp. 2456 - 2460, September, 2002 | BibTex
J. Tavares, A. Navarro, Noise Power in PCM Image Transmission, Portuguese Conf. on Pattern Recognition - RecPad, Aveiro, Portugal, June, 2002 | BibTex
J. Tavares, A. Navarro, Forward Error Protection of H.263-DG Bit Streams, IEEE Mediterranean Electrotechnical Conference - MELECON, Cairo, Egypt, Vol. 1, pp. 390 - 394, May, 2002 | BibTex
A. Navarro, Technical Aspects of European Digital Terrestrial Television, IEEE Mediterranean Electrotechnical Conference - MELECON, Cairo, Egypt, Vol. 1, pp. 2 - 6, May, 2002 | BibTex
M. Rostami, A. Navarro, Robust Cable Remote Control for Set-Top Boxes, IEEE Mediterranean Electrotechnical Conference - MELECON, Cairo, Egypt, Vol. 1, pp. 66 - 69, May, 2002 | BibTex
J. Tavares, A. Navarro, Improving Error Robustness of H.263 Bitstreams, Conf. on Telecommunications - ConfTele, Figueira da Foz, Portugal, Vol. 1, pp. 1 - 1, April, 2001 | BibTex
S.M.M. Faria, A. Navarro, L. V. Sá, Address Generator Circuit for a H.261 Encoder, Portuguese Conf. on Pattern Recognition - RecPad, Porto, Portugal, May, 1993 | BibTex
S.M.M. Faria, P.A. Assunção, L. A. S. C. Cruz, F. Lopes, A. Navarro, J. C. Silvestre, F. Perdigão, V. Silva, L. V. Sá, DSP based hardware for Real-Time Video Coding, Image Processing and Interchange, Implementation and System, San José, United States, February, 1992 | BibTex
S.M.M. Faria, P.A. Assunção, L. A. S. C. Cruz, F. Lopes, A. Navarro, F. Perdigão, V. Silva, L. V. Sá, DSP based VIDEO CODEC for Visual Telephony, Fourth IEEE Digital Signal Processing Workshop, New York, United States, September, 1990 | BibTex
S.M.M. Faria, P.A. Assunção, L. A. S. C. Cruz, F. Lopes, A. Navarro, V. Silva, F. Perdigão, L. V. Sá, Desenvolvimento de um Videotelefone em Portugal, European Conference on Networks and Communications - EuCNC, Lisboa, Portugal, April, 1990 | BibTex

Patents

3Patents

Image Data Compression Method and Device using Segmentation and Classification, P1254.3, PCT, 19-04-2022,
| Abstract
Method to transcode H.264/AVC video frames into MPEG-2 and device, US47491509, National, Granted, 02-06-2008, United States
Plataforma Conversora Multi-programa de Televisão Digital em Televisão Analógica, PT102690, National, Granted, 14-11-2001, Portugal

Projects

Currently running projects2

Acronym	Name	Funding Agency	Start date	Ending date
EyeInTheSky	Utilização de Balões de Alta-Altitude para Apoio à Decisão em Operações de Combate a Incêndios Rurais	FCT	01-01-2020	31-12-2022
ORCIP	Optical Radio Convergence Infrastructure for Communications and Power Delivering	PO Centro	01-05-2017	30-04-2029

Closed Projects14

Acronym	Name	Funding Agency	Start date	Ending date
5G	SI I&DT Copromoção Nr. 024539 - Componentes e serviços para redes 5G	P2020	01-01-2018	30-06-2021
AI-BEAM	Intelligent Beamforming Metasurfaces for Future Telecommunications	FCT/CMU	01-10-2020	31-03-2022
ARoundVision	All aRound panoramic Vision for smart and secure environments	FCT/POCI, PO Centro	19-06-2018	18-06-2022
DVR	Digital Video Recorder	ADI	01-01-2005	31-01-2006
FireTec	Forest Fire Detection and Alarming Using Existing Telecommunications Infrastructure	IT	01-09-2020	31-08-2022
GMF4ITV	GMF for ITV	EU	01-05-2002	01-09-2005
H2M	H.264 to MPEG-2 Video Transcoder for Digital TV	IT/LA	01-10-2005	01-12-2007
HAN-4G	Integration of Heterogeneous Access Networks in a 4G Architecture	IT/LA	01-09-2005	31-08-2007
Navio	Navy Video	Marinha Portuguesa	01-09-2002	01-09-2003
ORAL	Alocação Óptima de Recursos	FCT/POCI	01-07-2005	01-07-2008
PANORAMA	PANORAMA - Plataforma Rádio	PT Inovação	01-01-2009	01-06-2011
RETIOT	Utilização de Tecnologias de Reflectometría no melhoramento do futuro Internet das Coisas e Sistemas Ciber-Físicos	P2020	09-01-2017	30-06-2021
TRIVial	Radio Interactive Transmission of Local Video	ADI	01-04-2003	31-03-2005
VALUE	Novel dual-band balanced antennas for 700/2600 Mhz LTE frequency bands	IT/LA	01-09-2014	01-08-2016

Other Contributions

3Conference Committees

IEEE IEEE International Conference on Consumer Electronics, Technical Programme Committee, 2015
IEEE International Conf. on Consumer Electronics - ICCE, Technical Programme Committee, 2012
IEEE International Symp. on Consumer Electronics - ISCE, Conference Chairman, 2009

1Editorial Committees

Associate Editor, IEEE Transactions on Circuits and Systems for Video Technology, 01-09-2008 - today

5Refereeing Journals

IEEE Transactions on Broadcasting
2015, 1 review(s);
IEEE Journal on Selected Areas in Communications
2015, 1 review(s);
IEEE Transactions on Image Processing
2016, 1 review(s);
Signal Processing: Image Communication
2017, 1 review(s);
IEEE Transactions on Circuits and Systems for Video Technology
2016, 1 review(s);

1Refereeing Conferences

IEEE International Conf. on Consumer Electronics - ICCE
2012, 1 review(s);

IT Member Profile

António Navarro

Scientific Achievements

As Supervisor

As Co-supervisor

As Supervisor

As Co-supervisor

As Co-supervisor

Currently running projects2

Closed Projects14