A DUAL WATERMARKING SCHEME OF DIGITAL IMAGE

In this paper, a digital image dual watermarking scheme is presented. In the scheme, robust watermark is integrated with fragile watermark. Robust watermark is the copyright symbol of ditigal, image and fragile watermark is a validating authenticity measurement to confirm the tamper status of digital image. Both of two watermarks are embedded in spatial domain. Double keys, embedding and correlative recovering ways of non-plane and some characters based on HVS property are introduced during embedding robust watermark, while fragile watermark, adopting spatial domain low bit plane random embedding way aimed at pixels. The scheme is an effective measurement to determine the authenticity and integrality of an image.