Використання цифрових водяних знаків для захисту авторського права в зображеннях

Abstract

In the given work is offered steganographic method for providing protection of the copyright in images by digital watermarks. The developed method is based on discrete cosine-transformation and according to method digital watermark embed in frequency area of the image by changing values of coefficients. Owing to use of low-frequency coefficients and insignificant changing of their values the method has a number of advantages before existing approaches of embedding digital watermarks