Robustness and Imperceptibility Enhancement in Watermarked Images by Color Transformation

TL;DR

This paper proposes a watermarking method that enhances robustness and imperceptibility in digital images by utilizing YUV color space conversion and DCT embedding in wavelet subbands, demonstrating high effectiveness.

Contribution

It introduces a novel watermarking approach combining color space transformation and frequency domain embedding to improve robustness and transparency.

Findings

High robustness against attacks

Enhanced imperceptibility of watermarked images

Effective use of YUV color space and DCT in wavelet domain

Abstract

One of the effective methods for the preservation of copyright ownership of digital media is watermarking. Different watermarking techniques try to set a tradeoff between robustness and transparency of the process. In this research work, we have used color space conversion and frequency transform to achieve high robustness and transparency. Due to the distribution of image information in the RGB domain, we use the YUV color space, which concentrates the visual information in the Y channel. Embedding of the watermark is performed in the DCT coefficients of the specific wavelet subbands. Experimental results show high transparency and robustness of the proposed method.