An Efficient Anaglyph 3D Content based Video Retrieval using Watermarking Technique
Dorra Dhaou, Saoussen Ben Jabra, Ezzeddine Zagrouba · 2023
Digital watermarking challenges are multiple. The most important are copyright protection, integrity control, and indexing. The latter has gained significant attention from the research community due to the increasing production of multimedia data. Existing anaglyph 3D video watermarking methods are developed mainly for copyright protection applications but they have not targeted indexing applications that facilitate the retrieving of anaglyph 3D videos in databases. Hence, it is necessary to develop a robust watermarking technique dedicated to indexing in order to both protect and facilitate retrieving anaglyph 3D videos. This paper presents a novel watermarking-based retrieval system for anaglyph 3D videos. The system utilizes a mosaic image generated from the original video as the signature, providing a comprehensive representation of the video’s content. To handle the large size of the mosaic image, it is divided into a set of vectors. The obtained vectors are embedded into different selected frames using a dynamic insertion key to ensure visual quality and robustness against collusion attacks. During retrieval, the extracted signatures from the database are compared with the query video’s mosaic image using a similarity measure. Experimental results demonstrate high visual quality, robustness, and effectiveness of the proposed system.