Research On Digitall Copyright Control Technology Of Remote Sensing Images Based On Block Chain

At present,the application of remote sensing image data in various industry fields is increasing.The cost of obtaining remote sensing image data is becoming lower and lower.Even the lawless elements randomly spread,copy and tamper with such data,making copyright piracy more and more rampant.Digital publishers arbitrarily spread without authorization,bringing new challenges to the security of remote sensing image data.How to prevent the illegal tampering,propagation of remote sensing images and the control of remote sensing images has become an urgent problem to be solved.Aiming at the above problems,this paper proposes a blockchain-based digital copyright protection strategy for remote sensing images,and designs a secure transaction system based on blockchain for remote sensing image data.The system is mainly for multi-spectral high-resolution remote sensing images.The main research work and results of this paper are as follows:1.The core of the blockchain technology is the consensus algorithm.Therefore,based on the consensus problem existing in the existing consensus algorithm,a digital copyright consensus algorithm based on blockchain for remote sensing image is proposed.The current consensus algorithms mainly include workload proof algorithm,Pos,DPos,Byzantine fault-tolerant algorithm,Aiming at the shortcomings of slow consensus and low throughput of Byzantine fault-tolerant algorithm and the traditional Byzantine fault-tolerant algorithm is a consensus model of C/S architecture.Aiming at this problem,a new type of distributed consensus algorithm is studied,which is called blockchain-based digital copyright consensus algorithm for remote sensing image.The algorithm can effectively reduce the time reached by the consensus of the whole network node,and improve the problem of slow consensus speed and low throughput.Through comparison experiments,the proposed blockchain-based consensus consensus algorithm has a throughput that is 4.2% higher than that of the traditional Byzantine fault-tolerant algorithm.The average consensus speed based on blockchain is 3% faster than the average consensus speed of the traditional Byzantine fault-tolerant algorithm,which verifies the efficiency of the consensus algorithm.2.Aiming at the existing problems of remote sensing image data protection technology,a digital block copyright protection method for remote sensing image is proposed.The current methods for protecting remote sensing image data mainly include digital watermarking technology and encryption theory.These technologies directly embed the digital watermark into the remote sensing image,which affects the image quality of the remote sensing image.In order to protect the quality of the original remote sensing image data,a remote sensing image protection based on blockchain is studied.method.The method overcomes the defect of the protection technology of the traditional remote sensing image data,and retains the original quality of the remote sensing image.3.Aiming at the above improved consensus algorithm and proposed protection model,a blockchain-based remote sensing image data security transaction system is designed.The system can upload and download remote sensing image data,remote sensing image data products,etc.The remote sensing remote sensing image data uploaded by the system needs to pass verification to verify whether it already exists.If the verification succeeds,the uploading can be successful and a digital certificate is obtained.If the user wants to use the remote sensing image data data,it needs to conduct a transaction,and use the remote sensing image data according to the transaction payment situation.In the process of transaction,the system automatically generates the permission mechanism such as the number of times of using the remote sensing image and the usage time according to the payment situation.If it is a particularly important data,you need to set permissions that do not allow secondary development and transfer.The trading system has been tested to meet the needs of practical applications in terms of functionality and performance.The research results show that the blockchain-based remote sensing image data security transaction system can safely and efficiently exchange remote sensing image data,and can ensure that remote sensing image data is not randomly copied,falsified and reprocessed.The protection of digital copyright provides a new research program,which provides a very valuable value for the application of high resolution remote sensing image data in China.