SVD based watermark and Fourier transform based watermark system

This is a project of Digital Watermarking System, which is a homework practice of UCAS 2025 spring semaster Digit Secure Governance. In this project, we implemented two different watermarking systems: one based on the Fourier Transform (FFT) and the other based on the Singular Value Decomposition (SVD).

To know more about this project, please refer to the following files:

File Structure

- fouriere_watermark
  - utils.py
  - embed.py
  - extract.py
  - main.py
  - metrics.py
  - readme.md
- svd_watermark
  - utils.py
  - embed.py
  - extract.py
  - main.py
  - metrics.py
  - readme.md
- readme.md
- requirements.txt
- images
  - host.jpg
  - watermark.png
- output
  - fourier_output
  - svd_output

This repository contains two folders: fourier_watermark and svd_watermark. Each folder contains the necessary files for implementing a digital watermarking system based on the Fourier Transform (FFT) and Singular Value Decomposition (SVD).