An Introduction of Digital Watermarking Technique

Digital media has strongly improved our enjoyment and lives, but its inherent property has resulted in illegal copy without any quality loss in the meantime How to effectively protect the intellectual property of multimedia has become a common issue in both the academic field and the business society The digital watermarking technique has been proposed as a promising means for it and been considered as "the last line of defence" This paper introduces its application areas, basic requirements and system framework, also gives a representative algorithm Finally some concluding remarks are made