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Few-Shot Scene Recognition, a New Proxy Task for Child Sexual Abuse Material Detection

Grant number: 22/14690-8
Support Opportunities:Scholarships in Brazil - Post-Doctoral
Start date: April 01, 2023
End date: October 30, 2024
Field of knowledge:Physical Sciences and Mathematics - Computer Science - Computing Methodologies and Techniques
Principal Investigator:Sandra Eliza Fontes de Avila
Grantee:Leo Sampaio Ferraz Ribeiro
Host Institution: Instituto de Computação (IC). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
Associated research grant:13/08293-7 - CCES - Center for Computational Engineering and Sciences, AP.CEPID

Abstract

The spread of Child Sexual Abuse Material (CSAM) over the internet is an ever-growing, worldwide problem that re-victimizes its victims and becomes increasingly intractable with current manual checking and investigative efforts from law enforcement agencies. Furthermore, the burden of dealing with this kind of data wears heavily on agents that have to categorize hundreds of terabytes of data every year in search of victims and perpetrators. There is then a clear need for automated CSAM recognition systems. In this project, we propose to design and prove the effectiveness of a new proxy task for CSAM detection that dispenses access to such sensitive data for parameter tuning. Few-shot Scene Recognition, our chosen task, should provide training and evaluation support for designing models that can then be given to specialized law-enforcement agents for CSAM detection, who are and should always be the only personnel with access to these materials. We highlight that our team is at the forefront of such research worldwide being responsible for groundbreaking results associated with Digital Forensics, Machine Learning, and Computer Vision.

News published in Agência FAPESP Newsletter about the scholarship:
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Scientific publications (4)
(The scientific publications listed on this page originate from the Web of Science or SciELO databases. Their authors have cited FAPESP grant or fellowship project numbers awarded to Principal Investigators or Fellowship Recipients, whether or not they are among the authors. This information is collected automatically and retrieved directly from those bibliometric databases.)
CAETANO, CARLOS; DOS SANTOS, GABRIEL O.; PETRUCCI, CAIO; BARROS, ARTUR; LARANJEIRA, CAMILA; FERRAZ RIBEIRO, LEO SAMPAIO; DE MENDONCA, JULIA FERNANDES; DOS SANTOS, JEFERSSON A.; AVILA, SANDRA. Neglected Risks: The Disturbing Reality of Children's Images in Datasets and the Urgent Call for Accountability. PROCEEDINGS OF THE 2025 ACM CONFERENCE ON FAIRNESS, ACCOUNTABILITY, AND TRANSPARENCY, ACM FACCT 2025, v. N/A, p. 12-pg., . (22/14690-8, 24/01210-3, 13/08293-7, 20/09838-0, 23/12086-9, 24/09375-1, 24/07969-1, 24/09372-2)
CAETANO, CARLOS; FERRAZ RIBEIRO, LEO SAMPAIO; LARANJEIRA, CAMILA; DOS SANTOS, GABRIEL OLIVEIRA; BARROS, ARTUR; PETRUCCI, CAIO; DOS SANTOS, ANDREZA APARECIDA; MACEDO, JOAO; CARVALHO, GIL; BENEVENUTO, FABRICIO; et al. Mastering Scene Understanding: Scene Graphs to the Rescue. 2024 37TH SIBGRAPI CONFERENCE ON GRAPHICS, PATTERNS AND IMAGES, SIBGRAPI 2024, v. N/A, p. 6-pg., . (24/01210-3, 24/09372-2, 20/09838-0, 22/14690-8, 24/09375-1, 13/08293-7, 23/12086-9)
VALOIS, PEDRO H. V.; MACEDO, JOAO; RIBEIRO, LEO S. F.; DOS SANTOS, JEFERSSON A.; AVILA, SANDRA. Leveraging self-supervised learning for scene classification in child sexual abuse imagery. FORENSIC SCIENCE INTERNATIONAL-DIGITAL INVESTIGATION, v. 53, p. 11-pg., . (23/12086-9, 22/14690-8, 20/09838-0, 13/08293-7)
COELHO, THAMIRIS; FERRAZ RIBEIRO, LEO SAMPAIO; MACEDO, JOAO; DOS SANTOS, JEFERSSON A.; AVILA, SANDRA. Minimizing Risk Through Minimizing Model-Data Interaction: A Protocol For Relying on Proxy Tasks When Designing Child Sexual Abuse Imagery Detection Models. PROCEEDINGS OF THE 2025 ACM CONFERENCE ON FAIRNESS, ACCOUNTABILITY, AND TRANSPARENCY, ACM FACCT 2025, v. N/A, p. 11-pg., . (23/12086-9, 20/09838-0, 22/14690-8, 13/08293-7)