Catch The Mark
Project information
- Category: Forensics
- Context: Competition for teams of students attending the course Multimedia Data Security (MSc in Computer Science, UniTN, 2020/'21)
- Project date: December, 2020
The Professor organizes this competition every year as part of the students' evaluation.
The game is composed of two phases: in the first one the groups are given some grayscale images and they must embed a watermark maximizing
its robustness and minimizing the quality loss of the images. Teams are free to choose any embedding algorithm, as long as images are delivered within the time limit.
In the second part, every team must attack as many watermarked
images as possible from other teams: the goal is to destroy the watermark without damaging too much the quality of the image. The function detecting if the watermark is still present is provided by the attacked team(s).
Points were assigned for each phase based on various criteria (e.g. quality, activity, etc.).
My team (whatamark - read as "What a mark!!) won the competition by developing an embedding algorithm based
on multiple applications of the discrete wavelet transform.