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It may be a specific sample from a dataset used for facial recognition , biometrics , or steganography research, where individual subjects are often labeled with names followed by a number.

What or field the paper is about (e.g., AI, math, security)? klaudia1.png

To help me identify the exact paper or context, could you tell me: It may be a specific sample from a

However, based on the naming convention, it is likely related to one of the following: or steganography research

In digital forensics or "Capture The Flag" (CTF) competitions, files like this are often used as puzzles where players must find hidden data within the image.