Toward a Robust Image Watermarking Method: Exploiting Human Visual System Properties in the Spatial Domain
Lamri Laouamer · Traitement du signal · 2023
The need for secure and reliable methods to protect digital content from unauthorized manipulation has become increasingly critical.Although cryptography has been instrumental in addressing digital content security, it is not without shortcomings.In particular, symmetrical cryptographic systems exhibit significant vulnerabilities in encryption key protection, while asymmetric cryptosystems demand high computational time.Consequently, there is an urgent need to explore alternative security solutions to address these limitations.Watermarking has emerged as a promising candidate for ensuring integrity, authenticity, and digital rights protection.In this study, a novel, robust, and informed watermarking approach for color digital images in the spatial domain is proposed, leveraging Local Binary Pattern (LBP) operators for watermark generation.The embedding of the watermark is achieved in the blue channel of the Red, Green, Blue (RGB) image on its corresponding LBP image, owing to the low sensitivity of the blue color in relation to the imperceptibility of the embedded watermark.The proposed approach is evaluated against a diverse range of geometric and non-geometric attacks to demonstrate its reliability.In order to assess the performance of the proposed method in terms of imperceptibility and robustness, watermarked images are subjected to various attacks and analyzed using well-established metrics.The results obtained are highly encouraging, both in terms of the imperceptibility of the embedded watermarks and their robustness against different attack scenarios.