Anonymous re-identification concept

摘要

PROBLEM TO BE SOLVED: To provide a system, an apparatus and a method for carrying out anonymous re-identification and for developing a machine learning model used for anonymous re-identification. A re-identification device (20) includes a processing circuit (24) for acquiring media data via an interface (22). The processing circuit 24 uses a hashing algorithm to generate a re-identification code that represents media data, transforms the re-identification code by using the transformation functionality, obtains the modified re-identification code, and obtains the modified re-identification code. offer. The transformation functionality is that if the re-identification code is similar to another re-identification code generated by a hashing algorithm that follows a similarity metric, then the modified re-identification code is another modified re-identification code that is a modified version of the other re-identification code. The re-identification code is modified to resemble the identification code, and the re-identification code is modified based on time and / or location-dependent transformation parameters. [Selection diagram] FIG. 2a