Privacy Preserving Group Membership Verification and Identification

Marzieh Gheisari (1) , Teddy Furon (1) , Laurent Amsaleg (1)

1 LinkMedia - Creating and exploiting explicit links between multimedia fragments

When convoking privacy, group membership verification checks if a biometric trait corresponds to one member of a group without revealing the identity of that member. Similarly , group membership identification states which group the individual belongs to, without knowing his/her identity. A recent contribution provides privacy and security for group membership protocols through the joint use of two mechanisms: quantizing biometric templates into discrete embeddings, and aggregating several templates into one group representation. This paper significantly improves that contribution because it jointly learns how to embed and aggregate instead of imposing fixed and hard coded rules. This is demonstrated by exposing the mathematical underpinnings of the learning stage before showing the improvements through an extensive series of experiments targeting face recognition. Overall, experiments show that learning yields an excellent trade-off between security / privacy and the verification / identification performances.

Mots clés: face identification; Group Representation; Group Membership Verification; Privacy Preserving identification; Group Membership Identification

Domaines: Apprentissage [cs.LG]; Vision par ordinateur et reconnaissance de formes [cs.CV]

Marzieh Gheisari, Teddy Furon, Laurent Amsaleg. Privacy Preserving Group Membership Verification and Identification. CVPR 2019 - IEEE Conference on Computer Vision and Pattern Recognition, Jun 2019, Long Beach, United States. pp.1-9. ⟨hal-02107442⟩