Forefront of Combating Visual Information Threats and Enhancing Security

We research and develop cutting-edge strategies to protect visual information, focusing on biometrics and innovative security technologies. 

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Our projects

Shaping the Future of Visual Security

 we focus on developing and refining technologies to secure visual information, from biometrics to state-of-the-art security features.

About us
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partners and collaborators
INSTITUTIONS
partners and collaborators
INSTITUTIONS

VISUAL INFORMATION
SECURITY TEAM

VIS TEAM is a research nucleus focused on the security of visual information, spanning from biometrics, to cutting-edge security elements of sovereign documents or security stamps. VIS TEAM works on both sides of the security: on the detection of fraud and attacks, by one side, and on the protection of the visual content on the other side.

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most recent news

All news
Dissemination
9 de December, 2019

“UniQode” permite leitura e validação da autenticidade da marca através de dispositivo móvel

Read Article
Dissemination
9 de December, 2019

“UniQode” permite leitura e validação da autenticidade da marca através de dispositivo móvel

Read Article
News: Results and Achievements
Paper presented at NeurIPS 2025
December 11, 2025
News: Scientific Events
VIS Team has presented workshop at...
December 6, 2025
News: Scientific Events
Semantics and Compliance at the Core...
November 29, 2025
News: Others
Announcement of (1) Research Grant
August 27, 2025
News: Results and Achievements
Paper accepted to IJCB 2025
July 21, 2025
News: Scientific Events
Prof. Nuno and VIS Team successfully...
July 16, 2025
News: Results and Achievements
Paper presented at NeurIPS 2025
December 11, 2025
News: Scientific Events
VIS Team has presented workshop at...
December 6, 2025
News: Scientific Events
Semantics and Compliance at the Core...
November 29, 2025
News: Others
Announcement of (1) Research Grant
August 27, 2025
News: Results and Achievements
Paper presented at NeurIPS 2025
December 11, 2025
News: Scientific Events
VIS Team has presented workshop at...
December 6, 2025
News: Scientific Events
Semantics and Compliance at the Core...
November 29, 2025
News: Results and Achievements
Paper presented at NeurIPS 2025
December 11, 2025
News: Scientific Events
VIS Team has presented workshop at...
December 6, 2025
News: Scientific Events
Semantics and Compliance at the Core...
November 29, 2025
News: Others
Announcement of (1) Research Grant
August 27, 2025

Protecting and Detecting: Leading Visual Information Security

Our projects
Our Researches

Featured project

All Projects

UniqueMark

This project aims to improve the safety of INCM's contrasting marks in precious metal artefacts (the precious metals are officially designated: gold, silver, platinum and palladium), making them unique and unable to be copied and faked. One of the objectives of this project is to allow the test of authenticity...
Start date: 2016-01-06
End date: 2018-01-05
Funding by: Imprensa Nacional Casa da Moeda (INCM)
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Project In progress
CertifyMeAP
Project In progress
DeepFakesFLY
Project In progress
UniqueMark Operation
The UniqueMark project, developed between INCM and UC, betwe...
Project In progress
ACHILLES
Inspired by the Olympic motto “Citius, Altius, Fortius...
Project Completed
TruIM – Trust Image Understanding
TruIm Project aims at developing technologies to authenticat...
Project In progress
ICAO compliant Dataset
This ICAO Compliant Dataset project is part of the FACING2 p...
Project In progress
FACING2 – Face Image Understanding
The FACING-2 project aims to study and develop methods that ...
Project Completed
VISUAL-ID – Unique Visual Identities in Graphics, Images and Faces
The Visual-ID project emerge in the context of the partnersh...
Project Completed
FACING
Os principais objetivos deste projeto são a realização de ba...
Project Completed
UniqueMark Pilot
–
Project In progress
CertifyMeAP
Project In progress
BlockDFake
Project In progress
ACHILLES
Inspired by the Olympic motto “Citius, Altius, Fortius...
Project In progress
FACING2 – Face Image Understanding
The FACING-2 project aims to study and develop methods that ...
VISUAL-ID – Unique Visual Identities in Graphics, Images and Faces
Funded by:Imprensa Nacional Casa da Moeda (INCM)
Know more
Project In progress

DeepFakesFLY

Project In progress

UniqueMark Operation

The UniqueMark project, developed between INCM and UC, between the end of 2016 and mid-201...

Project In progress
DeepFakesFLY
Project In progress
UniqueMark Operation
The UniqueMark project, developed between INCM and UC, betwe...
Project In progress
ACHILLES
Inspired by the Olympic motto “Citius, Altius, Fortius...
Project In progress
ICAO compliant Dataset
This ICAO Compliant Dataset project is part of the FACING2 p...

Featured Papers

All publications

Second Competition on Presentation Attack Detection on ID Card

Authors: Juan E Tapia; Mario Nieto; Juan M Espin; Alvaro S Rocamora; Javier Barrachina; Naser Damer; Christoph Busch; Marija Ivanovska; Leon Todorov; Renat Khizbullin; Lazar Lazarevich; Aleksei Grishin; Daniel Schulz; Sebastian Gonzalez; Amir Mohammadi; Ketan Kotwal; Sebastien Marcel; Raghavendra Mudgalgundurao; Kiran Raja; Patrick Schuch; Sushrut Patwardhan; Raghavendra Ramachandra; Pedro Couto Pereira; Joao Ribeiro Pinto; Mariana Xavier; Andrés Valenzuela; Rodrigo Lara; Borut Batagelj; Marko Peterlin; Peter Peer; Ajnas Muhammed; Diogo Nunes; Nuno Gonçalves
Featured in: 2025 IEEE International Joint Conference on Biometrics

DFIC: Towards a balanced facial image dataset for automatic ICAO compliance verification

Authors: Nuno Gonçalves; Diogo Nunes; Carla Guerra; João Marcos
Featured in: Submited to: ArXiv

DocSafe: Toward Practical Print-Proof Image Steganography via Frequency Decomposition and Covariance Alignment

Authors: Farhad Shadmand, Iurii Medvedev, Luiz Schirmer, Nuno Gonçalves
Featured in: IEEE Access
All publications

DocSafe: Toward Practical Print-Proof Image Steganography via Frequency Decomposition and Covariance Alignment

Featured in: IEEE Access
Authors: Farhad Shadmand, Iurii Medvedev, Luiz Schirmer, Nuno Gonçalves
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DocSafe: Toward Practical Print-Proof Image Steganography via Frequency Decomposition and Covariance Alignment

Featured in: IEEE Access
Authors: Farhad Shadmand, Iurii Medvedev, Luiz Schirmer, Nuno Gonçalves
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FLOWING: Implicit Neural Flows for Structure-Preserving Morphing

Featured in: Advances in Neural Information Processing Systems 2026
Authors: Arthur Bizzi; Matias Grynberg Portnoy; Vitor Pereira Matias; Daniel Perazzo; João Paulo Silva do Monte Lima; Luiz Velho; Nuno Gonçalves; João Pereira; Guilherme Schardong; Tiago Novello
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FLOWING: Implicit Neural Flows for Structure-Preserving Morphing

Featured in: Advances in Neural Information Processing Systems 2026
Authors: Arthur Bizzi; Matias Grynberg Portnoy; Vitor Pereira Matias; Daniel Perazzo; João Paulo Silva do Monte Lima; Luiz Velho; Nuno Gonçalves; João Pereira; Guilherme Schardong; Tiago Novello
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OUR RESEARCHERS

All researchers
Iurii Medvedev
Post-Doc Researcher
Jin Bo
Post-Doc Researcher
Guilherme Schardong
Post-Doc Researcher
Diogo Nunes
Researcher
Miguel Leão
Researcher
Aniana Cruz
Post-Doc Researcher
Carla Guerra
Post-Doc Researcher
Ruben Bento
Researcher
André Neto
Master Student
Carla Gomes
Staff
Luís Pereira
Researcher
Bruno Patrão
Researcher
Jorge Monteiro
Researcher
António Madaleno
Researcher
Tadeu Ferreira
Master Student
Ricardo Barata
Researcher
Dirce Celorico
Researcher
Farhad Shadmand
Post-Doc Researcher
Leandro Cruz
Post-Doc Researcher
Miguel Garruço
Master Student
Nuno Monteiro
Researcher
Luiz Schirmer
Post-Doc Researcher
David Carreira
Researcher
João Cardoso
Researcher
Ainhoa Sagardoy
Master Student (Erasmus)
Andoni Santos
Researcher
Gledson Melotti
PhD Student
Daniele Barbato
Master Student
Luís Gonçalo
Researcher
Alessandro Afloarei
Master Student
Rohit Kumar
Researcher
Eduardo Guerra
Research Engineer
Rafael Pereira
Master Student
Vasco Ferreira
Master Student
Ana Catarina Almeida
Researcher
Pedro Martins
Master Student
Rui Barbosa
Master Student
Viviana Abreu
Master Student
Henrique Mendes
Master Student
Joana Pimenta
Master Student
João Tremoço
Master Student
Leandro Dihl
Post-Doc Researcher
Telmo Cunha
Master Student
Pedro Gonçalves
Master Student
Allan da Silva
Post-Doc Researcher
Ajnas Muhammed
Post-Doc Researcher
João Marcos
Post-Doc Researcher and Project Manager
Nuno Gonçalves
Researcher Coordinator, VIS TEAM Leader
Ali Ahmadi
PhD Student
Carlos Roxo
PhD Student
Francisco Porto
Master Student
Ruben Castanheira
Master Student
Gustavo Bongiovi
Science Manager
David Ferreira
Researcher
Rodrigo Gonçalves
Bsc student
Diana Gonçalves D’Amil
Bsc student
Ana Margarida Amaral Ramos
Bsc student
Alexandre Pinto
Master Student

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Institute of Systems and Robotics Department of Electrical and Computers Engineering University of Coimbra