Research On A Watermaeking Algorithm Based On Feature Point And Delaunay Triangulation

Personal computer is no longer the only terminal to link with the Internet nowadays.With the development of the International technology and digital media technology,the mobile equipments,such as smartphone and tablet computer,standout to be the mainstream Internet terminal equipments.Therefore,people can get the information what they need from the Internet by serious way easier and faster.However,at the same time,there are more serious problem about intellectual property protection and information distortion.Nowadays,the digital watermark attracts more attention as it becomes the main technical means about information hiding in many digital media.By the effective watermark algorithm,watermark can hide in the digital media and protect the intellectual property by its invisibility and robustness.There are various watermark algorithms now.Hence,the main research of this paper is to integrate the feature point and Delaunay triangulation,By utilizing the feature points and benefits of these two technologies to increase the ability of watermarks to resist geometric attacks.The main works of this paper are as follows:1.Design the algorithms about watermark with the feature point and Delaunay triangulation,include the embedding and extracting of watermark.To achieve the goal about protect the image's intellectual property without compromising its integrity.The main work and the innovation is utilizing the feature point and the Delaunay triangulation to determine the watermark embedding area,and embed the Binary digital watermark in the FFT transform area.Strengthen the robustness and invisibility of the watermark,and protect the readability and integrity of the carrier image.2.Reduce the effect of the carrier image from the watermark as much as possible.By the embed algorithms to make watermark can be extracted blindly,that means the watermark can be relocated and extracted correctly by the extract algorithms after the attack by the geometric attacks such as rotate,cut,and compress,without the help of the origin image.The experimental results showed that this paper's algorithms can extract the watermark successfully in some situation.3.The difficulty point is how to integrate the feature point and the Delaunay triangulation effectually,so that the advantages complement each other,the good watermark embed and extract algorithm will be the key point.Under the guidance of this idea,this paper designed and developed a complete digital watermark algorithm.