An improved watermarking scheme for color image using alpha blending.

This paper proposes a robust and secure watermarking method for a color image in YC_bC_r color space. In this study, watermarking is performed using Lifting Wavelet Transform (LWT). Here, edge entropy and information entropy is used to find the block to embed watermark. In this work alpha blending scheme is used for embedding and extraction of watermarks in the LWT domain. The use of LWT makes the proposed scheme faster and more efficient. The Arnold Cat Map (ACM) is used to enhance watermark security. Numerous tests are presented to illustrate the feasibility of the proposed scheme. The experimental results obtained are compared to state-of-the-art schemes, which demonstrate the superiority of the proposed scheme. [ABSTRACT FROM AUTHOR]