The Experts below are selected from a list of 25383 Experts worldwide ranked by ideXlab platform

Martin Kutter - One of the best experts on this subject based on the ideXlab platform.

  • Information retrieval in Digital Watermarking
    IEEE Communications Magazine, 2001
    Co-Authors: J.R. Hernandez Martin, Martin Kutter
    Abstract:

    Digital Watermarking, the art of robust information hiding in images, has gained a large interest in both research and industry in the past few years. Every Watermarking system has two main parts: watermark embedding and watermark extraction/detection. Previous developments in the theoretical analysis of Digital Watermarking schemes have shown that there is a direct link between Digital Watermarking and communication theory. These parallels are extremely helpful when it comes to designing efficient and optimal watermark detectors. We focus on this issue and investigate how to design good watermark detectors taking into account the basics of communication theory. Furthermore, we discuss different ways to achieve robustness to geometrical attacks and elaborate on watermark attacks

J.R. Hernandez Martin - One of the best experts on this subject based on the ideXlab platform.

  • Information retrieval in Digital Watermarking
    IEEE Communications Magazine, 2001
    Co-Authors: J.R. Hernandez Martin, Martin Kutter
    Abstract:

    Digital Watermarking, the art of robust information hiding in images, has gained a large interest in both research and industry in the past few years. Every Watermarking system has two main parts: watermark embedding and watermark extraction/detection. Previous developments in the theoretical analysis of Digital Watermarking schemes have shown that there is a direct link between Digital Watermarking and communication theory. These parallels are extremely helpful when it comes to designing efficient and optimal watermark detectors. We focus on this issue and investigate how to design good watermark detectors taking into account the basics of communication theory. Furthermore, we discuss different ways to achieve robustness to geometrical attacks and elaborate on watermark attacks

Chen Zhao-jiong - One of the best experts on this subject based on the ideXlab platform.

Tan Xiaomei - One of the best experts on this subject based on the ideXlab platform.

  • A Digital Watermarking Algorithm Based On DCT and DWT
    Information Systems, 2009
    Co-Authors: Mei Jiansheng, Li Sukang, Tan Xiaomei
    Abstract:

    This paper introduces an algorithm of Digital Watermarking based on Discrete Cosine Transform(DCT) and Discrete Wavelet Transform(DWT). Accoring to the characters of human vision, in this algorithm, the information of Digital Watermarking which has been discrete Cosine transformed, is put into the high frequency band of the image which has been wavelet transformed. Then distills the Digital Watermarking with the help of the original image and the Watermarking image. The simulation results show that this algorithm is invisible and has good robustness for some common image processing operations.

Hirotsugu Kinoshita - One of the best experts on this subject based on the ideXlab platform.

  • design scheme of copyright management system based on Digital Watermarking and blockchain
    Computer Software and Applications Conference, 2018
    Co-Authors: Zhaoxiong Meng, Tetsuya Morizumi, Sumiko Miyata, Hirotsugu Kinoshita
    Abstract:

    In the past, the improvement of Digital copyright protection system based on Digital Watermarking mainly focused on algorithms, while generation and storage of the watermark information was ignored. In this paper, a new design scheme of copyright management system based on Digital Watermarking and its information, such as blockchain, is proposed, which combines Digital Watermarking, blockchain, perceptual hash function, Quick Response(QR) code, and InterPlanetary File System(IPFS). Among them, blockchain is used to securely store watermark information and provide timestamp authentication for multiple watermarks (multiple copyrights) to confirm the creation order. Perceptual hash function is used to generate hash value based on the structure information of images, that watermark information can be confirmed without the original image. QR code is used to generate QR code images containing image hash and copyright information as watermark images to improve robustness and capacity of Digital Watermarking; IPFS is used to store and distribute watermarked images without a centralized server. This scheme can enhance the effectiveness of Digital Watermarking technology in the field of copyright protection. In this way, use P2P network to integrate and complete copyright management and distribution of copyrighted works without requiring a trusted third party. Nodes rely on cryptography to confirm the identity of each other and ensure the security of information. It can reduce information leakage, data destruction and other risks caused by collapse of the centralized system in the past. This improves the security and transparency of information, and speeds up the distribution of copyrighted works to facilitate circulation in the network. This scheme can also improve copyright protection of multiple creations. Combine blockchain and multiple Digital watermarks to record copyright information of every copyright owner in the authoring process and fully prove this information. In order to protect the legitimate rights and interests of each copyright owner.