Watermarking Digital Images Based on a Content Based Image Retrieval Technique

TL;DR

This paper presents a fast, robust digital image watermarking algorithm that combines detectable and readable watermarks using content-based image retrieval for efficient detection in large image databases.

Contribution

It introduces a novel watermarking method that merges the strengths of detectable and readable watermarks with content-based image retrieval for improved efficiency.

Findings

The algorithm is highly robust against various attacks.

It significantly reduces detection time in large image libraries.

The method balances robustness and detection ease.

Abstract

The current work is focusing on the implementation of a robust watermarking algorithm for digital images, which is based on an innovative spread spectrum analysis algorithm for watermark embedding and on a content-based image retrieval technique for watermark detection. The highly robust watermark algorithms are applying "detectable watermarks" for which a detection mechanism checks if the watermark exists or no (a Boolean decision) based on a watermarking key. The problem is that the detection of a watermark in a digital image library containing thousands of images means that the watermark detection algorithm is necessary to apply all the keys to the digital images. This application is non-efficient for very large image databases. On the other hand "readable" watermarks may prove weaker but easier to detect as only the detection mechanism is required. The proposed watermarking algorithm combine's the advantages of both "detectable" and "readable" watermarks. The result is a fast and robust watermarking algorithm.