Digital Watermarking: The process of embedding imperceptible digital signals or patterns within digital media, such as images, audio, or video, to identify the source, ownership, or authorized use of the content.
Steganography: The practice of concealing a message, image, or file within another message, image, or file, in order to hide the existence of the embedded information.
Copyright Protection: The legal rights granted to the creator of an original work, which prohibit the unauthorized use or reproduction of that work without the owner's consent.