Research of digital watermark technology based on static image

Along with the digital technology and the Internet rapid development, each form digital work (image, video frequency, audio frequency and so on) publish in abundance in the network, its information security question has become at present information security domain research the hot spot and the difficulty. Solves the information security question two effective methods is the encryption technology and the digital watermark technology. This article has conducted the thorough research in view of this domain in digital image encryption technology and the watermark technology.