A dual watermarking scheme for identity protection

Area of Science:

• Computer Science
• Digital Forensics
• Information Security

Background:

• Digital and printed media require robust protection against unauthorized use and tampering.
• Existing watermarking schemes often face challenges in balancing robustness, imperceptibility, and dual-media applicability.
• The need for secure methods to prove media ownership and validity is critical in various applications.

Purpose of the Study:

• To introduce a novel dual watermarking scheme for securing both electronic and printed media.
• To utilize owner's signature and fingerprint as unique watermarks for ownership and validity verification.
• To demonstrate the scheme's applicability across different image types, including continuous-tone and multitoned images.

Main Methods:

• Development of a dual watermarking algorithm incorporating owner's signature and fingerprint.
• Implementation of the watermarking scheme on continuous-tone/greyscale images.
• Extension of the scheme to multitoned images, relevant for advanced printing technologies.

Main Results:

• The proposed watermarking embedding is demonstrated to be robust against potential manipulations.
• The embedded watermarks are imperceptible, maintaining the original media's visual quality.
• Experimental evaluations show excellent objective and subjective results, validating the scheme's effectiveness.

Conclusions:

• The novel dual watermarking scheme offers a secure and effective solution for identity protection, media integrity, and copyright enforcement.
• The scheme's ability to work on both electronic and printed media, using unique identifiers, enhances its practical utility.
• The robustness and imperceptibility of the watermarks, confirmed by experiments, highlight its potential for widespread adoption.