Abstract
Behind the popularity of multimedia technology, the dispute over image copyright is getting worse. In the digital watermark prevention technology for copyright infringement, watermark technology is considered to be an important technology to overcome data protection problems and verify the relationship between data ownership. Among the many digital watermarking technologies, zero watermarking technology has been favored in recent years. However, the existing zero watermark technology in the implementation process often needs a trusted third party to store watermarks, which may make the data too central, data storage security is low and copyright registration costs are too high, which creates a rare problem. The decentivization and information cannot be tampered of blockchain technology’s nature find new methods for image copyright protection. This paper studies the role of zero watermark algorithm in the image copyright and its complete storage and certification scheme, proposes a zero watermark image protection framework based on blockchain, and builds a system according to the framework. Combined with blockchain and zero watermarking technology, the framework uses inter IPFS (Inter Planetary File System) to solve the problem of blockchain efficient storage and sharing of large files. In addition, the application of user copyright information, image image query and image trading in the system are realized based on smart contracts, which solves the problem of lack of trusted third parties. Experiments show that the scheme is feasible and robust to various attacks.
Highlights
With the rapid development of multimedia, data and information technology more and more convenient, resulting in the original image copyright cannot be guaranteed, which makes the issue of image protection has become one of the most prominent problems.Digital watermarking is one of the most effective technologies to solve the copyright problem of digital multimedia copyright protection [1]
This paper studies the role of zero watermark algorithm in the image copyright and its complete storage and certification scheme, proposes a zero watermark image protection framework based on blockchain, and builds a system according to the framework
According to the detection method, the digital copyright watermark can be divided into blind watermark, non-blind watermark and zero watermark three ways, in which blind watermark and non-blind watermark are embedded in the carrier image, which will destroy the transparency of the original image and data structure
Summary
With the rapid development of multimedia, data and information technology more and more convenient, resulting in the original image copyright cannot be guaranteed, which makes the issue of image protection has become one of the most prominent problems. Blockchain has the characteristics of decentralization, high reliability and nontamperability It is suitable as a fully trusted third-party Intellectual Property Right(IPR), so studying zero watermarking algorithm and blockchain-based storage system can solve the problem of image copyright protection. The improved zero watermarking algorithm extracts key points by scale-Invariant Feature Transform, discrete wavelet transformation(DWT) to obtain the subband coefficient, fast Fourier transformation(FFT), and the KEY zero watermark key by different or computational operations By improving the zero watermark algorithm, a third-party Intellectual Property Righ(IPR) based on Ethereum blockchain is proposed to ensure the security and reliability of IPR, so as to ensure that the generated unique zero watermark information cannot be tampered with in IPR and can trace the information of image copyright transaction. Use the distributed storage system IPFS(Inter Planetary File System) to store the information of image copyright protection and ensure sufficient storage space of data
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