Content-Based Watermarking Model
نویسندگان
چکیده
In this paper, we propose a new general additive watermarking model based on the content of digital images, called as CBWM (Content-Based Watermarking Model). It provides a common basis to study many existing watermarking algorithms that are based on unitary transforms and to evaluate their performance and characteristics. CBWM is designed to address two important issues of digital watermarking. One is the requirement of robustness. In order to improve robustness and security, the embedded watermark is designed to be orthogonal to the feature vector of the original image, which means that watermarking casting is image content dependent. The second issue is watermark detection. CBWM presents a statistical approach to watermark detection based on the Neyman-Pearson criterion and describes a method for computing the probability of false alarm and missing rejection during watermark detection. In experimental tests, CBWM is applied to the popular discrete cosine transform and promising results are obtained.
منابع مشابه
Biological Infectious Watermarking Model for Video Copyright Protection
This paper presents the infectious watermarking model (IWM) for the protection of video contents that are based on biological virus modeling by the infectious route and procedure. Our infectious watermarking is designed as a new paradigm protection for video contents, regarding the hidden watermark for video protection as an infectious virus, video content as host, and codec as contagion medium...
متن کاملRobust watermarking for scalable image coding-based content adaptation
In scalable image coding-based content adaptation, such as, JPEG 2000, the quality scaling is performed by a quantization process that follows a bit plane discarding model. In this paper we propose a robust blind image watermarking algorithm by incorporating the bit plane discarding model. The new wavelet based binary tree guided rules-based watermarking algorithm is capable to retain the water...
متن کاملمدیریت کلید در سیستمهای مدیریت حقوق دیجیتال در حالت برونخطی
By expanding application of digital content in the world of information technology, supervision and control over the data, and also preventing the copy of documents is considered. In this relation digital rights management systems are responsible for the secure distribution of digital content, and for this purpose the common functions in the field of cryptography and utilize Digital watermarkin...
متن کاملSemantically Extended Digital Watermarking Model for Multimedia Content
Most current watermarking algorithms utilize syntactic features to achieve a good tradeoff between robustness and transparency by using perceptual models. They focus only on a detailed view of the contents, while little attention is paid to define and apply the semantic content features in the watermarking schemes. However, in some specific watermarking applications, such current approaches sho...
متن کاملRobust Content-Based Video Watermarking Exploiting Motion Entropy Masking Effect
A major class of image and video watermarking algorithms, i.e. content-based watermarking, is based on the concept of Human Visual System (HVS) in order to adapt more efficiently to the local characteristics of the host signal. In this paper, a content-based video watermarking scheme is developed and the concept of entropy masking effect is employed to significantly improve the use of the HVS m...
متن کامل