Repository logo

Infoscience

  • English
  • French
Log In
Logo EPFL, École polytechnique fédérale de Lausanne

Infoscience

  • English
  • French
Log In
  1. Home
  2. Academic and Research Output
  3. Conferences, Workshops, Symposiums, and Seminars
  4. Learning Privacy from Visual Entities
 
conference paper

Learning Privacy from Visual Entities

Xompero, Alessio
•
Cavallaro, Andrea  
2025
Proceedings on Privacy Enhancing Technologies Symposium (PoPETS)
The 25th Privacy Enhancing Technologies Symposium

Subjective interpretation and content diversity make predicting whether an image is private or public a challenging task. Graph neural networks combined with convolutional neural networks (CNNs), which consist of 14,000 to 500 millions parameters, generate features for visual entities (e.g., scene and object types) and identify the entities that contribute to the decision. In this paper, we show that using a simpler combination of transfer learning and a CNN to relate privacy with scene types optimises only 732 parameters while achieving comparable performance to that of graph-based methods. On the contrary, end-to-end training of graph-based methods can mask the contribution of individual components to the classification performance. Furthermore, we show that a high-dimensional feature vector, extracted with CNNs for each visual entity, is unnecessary and complexifies the model. The graph component has also negligible impact on performance, which is driven by fine-tuning the CNN to optimize image features for privacy nodes.

  • Files
  • Details
  • Metrics
Loading...
Thumbnail Image
Name

popets-2025-0098.pdf

Type

Main Document

Version

Published version

Access type

openaccess

License Condition

CC BY

Size

6.74 MB

Format

Adobe PDF

Checksum (MD5)

76c8315eae07542c116a1a1beb17d21d

Logo EPFL, École polytechnique fédérale de Lausanne
  • Contact
  • infoscience@epfl.ch

  • Follow us on Facebook
  • Follow us on Instagram
  • Follow us on LinkedIn
  • Follow us on X
  • Follow us on Youtube
AccessibilityLegal noticePrivacy policyCookie settingsEnd User AgreementGet helpFeedback

Infoscience is a service managed and provided by the Library and IT Services of EPFL. © EPFL, tous droits réservés