Forensic watermark

• Forensic watermarking inserts information of content users to track illegal distribution.
• Using Fast Fourier Transformation (FFT) with Python 3, OpenCV, numpy, and matplotlib

What is Forensic Watermarking?

• ‘Forensic Watermarking’ is a field of a technology called ‘digital watermarking’.
• ‘Digital watermarking’ refers to the technology of inserting and managing confidential information such as copyright information in various digital data such as photographs and videos.

Basics of Forensic Watermarking Technology

• Imperceptibility: The difference between the original image and the watermarked image must not be visually recognizable.
• Robustness: Watermark information should survive various attacks such as re-encoding, cropping, and filtering.

Reference: https://www.researchgate.net/figure/Original-image-Lenna-left-the-watermarked-copy-with-parameters_fig1_3720351

• Right amount of watermark intensity will be invisible to human.

Reference

https://medium.com/pallycon/how-netflix-protects-contents-part-2-33c1b60002a3