Digital image watermarking method in multi level DWT

Abstract

Watermarking is used for copyright protection using logo, image, stamp and text as a watermark. Recently, especially embedding binary image to color images has been worked alot and gave very promising results. In this work, we used text with small size characters and embed to color image as an image. We used Discrete Wavelet Transform to embed partions of watermark to different frequency bants of cover image in two or more level decomposition, that is very useful in both copyright protection and information hiding. After common attacks we have got very promising results. ©2008 IEEE.