Introductory Chapter: Digital Image and Video Watermarking and Steganography

Abstract

Watermarking and steganography are important cryptographic operations on images and videos. Watermarking embeds the ownership symbol in images and videos either visually or invisibly. Steganography hides small piece of information in images and videos invisibly. Watermarking is used mainly for copyright protection, whereas steganography is used to send secret messages. Table 1 presents the difference between watermarking and steganography.