Metadata protection scheme for JPEG privacy & security using hierarchical and group-based models

Privacy and intellectual rights management is becoming an important topic. The existing social network services (SNS) have many limitations in meeting consumers' expectations of their privacy and intellectual rights management. Metadata management in SNS is heterogeneous and susceptible to personal identification and copyright information misuses. There are cases where consumers are not informed in how their metadata is shared and used, while the copyrights of images are removed without the owner's consent. In this paper, we propose two metadata protection models called hierarchical and group-based model. The models are analyzed and evaluated with respect to the interest of user and services.