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HRPGAN: A GAN-based Model to Generate High-resolution Remote Sensing Images

IOP Conference Series: Earth and Environmental science 2020年第1期428卷

作者： Hai Sun Ping Wang Yifan Chang Li Qi Hailei Wang Dan Xiao Cheng Zhong Xuelian Wu Wenbo Li Bingyu Sun China Telecom Shanghai Ideal Information Industry (Group) Co. Ltd Shanghai China Department of Airborne Remote Sensing National Disaster Reduction Center of China Beijing China Institute of Technology Innovation Hefei Institute of Physical Science Chinese Academy of Sciences Hefei China The Third Research Institute of the Ministry of Public Security Shanghai China Guizhou Key Laboratory of Economics System Simulation Guizhou University of Finance and Economics Guiyang China Beijing Aerospace Flight Control Center Beijing China Institute of Intelligent Machines Chinese Academy of Sciences Hefei China

Generative adversarial networks (GAN) has been mainly used in the generation of natural images such as MNIST, CIFAR10 as well as Imagenet datasets and achieves satisfying generation results. However, GAN always fails in generating high quality high-resolution remote sensing images because remote sensing images are large in size and have various ground objects. To address this issue, a novel framework called High-Resolution PatchGAN (HRPGAN) is introduced in this paper. The structure of HRPGAN follows PatchGAN, but the batch normalization layers are removed and the ReLU activation is replaced by the SELU activation. In addition, a new loss function consisting of the adversarial loss, perceptual reconstruction loss and regularization loss is used in HRPGAN. Experiment results show that the proposed HRPGAN model generates the more diverse and lifelike images in HR remote sensing generation than Bicubic method and TGAN model.

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A secure and high-performance multi-controller architecture for software-defined networking

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Frontiers of information technology & Electronic Engineering 2016年第7期17卷 634-646页

作者： Huan-zhao WANG Peng ZHANG Lei XIONG Xin LIU Cheng-chen HU Department of Computer Science and Technology Xi'an Jiaotong UniversityXi'an 710059China Science and Technology on Information Transmission and Dissemination in Communication Networks Laboratory Shijiazhuang 050081China MOE Key Laboratory for Intelligent Networks and Network Security Xi'an Jiaotong UniversityXi'an 710049China

controllers play a critical role in software-defined networking(SDN).However,existing singlecontroller SDN architectures are vulnerable to single-point failures,where a controller's capacity can be saturated by flooded flow *** addition,due to the complicated interactions between applications and controllers,the flow setup latency is relatively *** address the above security and performance issues of current SDN controllers,we propose distributed rule store(DRS),a new multi-controller architecture for *** DRS,the controller caches the flow rules calculated by applications,and distributes these rules to multiple controller *** controller instance holds only a subset of all rules,and periodically checks the consistency of flow rules with each *** from switches are distributed among multiple controllers,in order to mitigate controller capacity saturation *** the same time,when rules at one controller are maliciously modified,they can be detected and recovered in *** implement DRS based on Floodlight and evaluate it with extensive *** results show that DRS can effectively maintain a consistently distributed rule store,and at the same time can achieve a shorter flow setup time and a higher processing throughput,compared with ONOS and Floodlight.

关键词： Software-defined networking(SDN) security Multi-controller Distributed rule store

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Weak value amplification via second-order correlated technique

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Chinese Physics B 2016年第2期25卷 58-61页

作者：崔挺黄靖正刘翔曾贵华 State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Key Laboratory on Navigation and Location-based Serviceand Center of Quantum Information Sensing and Processing Shanghai Jiao Tong University Shanghai Key Laboratory of Aerospace Intelligent Control Technology Shanghai Institute of Spaceflight Control Technology College of Information Science and Technology Northwest University

We propose a new framework combining weak measurement and second-order correlated technique. The theoretical analysis shows that weak value amplification （WVA） experiment can also be implemented by a second-order correlated system. We then build two-dimensional second-order correlated function patterns for achieving higher amplification factor and discuss the signal-to-noise ratio influence. Several advantages can be obtained by our proposal. For instance, detectors with high resolution are not necessary. Moreover, detectors with low saturation intensity are available in WVA setup. Finally, type-one technical noise can be effectively suppressed.

关键词： weak measurement two-dimensional second-order correlated function

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Semi-fragile watermarking for image authentication based on compressive sensing

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science China(information sciences) 2016年第5期59卷 248-250页

作者： Ling DU Xiaochun CAO Wei ZHANG Xinpeng ZHANG Na LIU Jianguo WEI School of Computer Science and Technology Tianjin University School of Computer Shenyang Aerospace University State Key Laboratory of Information Security Institute of Information EngineeringChinese Academy of Sciences School of Communication and Information Engineering Shanghai University

Dear editor,With the aid of sophisticated photoediting software,multimedia content security is becoming increasingly prominent[1,2].The problems of verifying the integrity and recovering the alterations have been a major research topic for information security and multimedia[3–6].Semi-fragile watermarking techniques are more powerful in dealing with such cases,which are fragile to malicious modifications meanwhile robust to incidental

关键词： DCT Semi-fragile watermarking for image authentication based on compressive sensing

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Continuous-variable measurement-device-independent quantum key distribution with virtual photon subtraction

arXiv

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arXiv 2017年

作者： Zhao, Yijia Zhang, Yichen Xu, Bingjie Yu, Song Guo, Hong State Key Laboratory of Information Photonics and Optical Communications Beijing University of Posts and Telecommunications Beijing100876 China State Key Laboratory of Advanced Optical Communication System and Network School of Electronics Engineering and Computer Science Center for Quantum Information Technology Peking University Beijing100871 China Science and Technology on Security Communication Laboratory Institute of Southwestern Communication Chengdu610041 China

The method of improving the performance of continuous-variable quantum key distribution protocols by post-selection has been recently proposed and verified. In continuous-variable measurement-device-independent quantum key distribution (CV-MDI QKD) protocols, the measurement results are obtained from untrusted third party Charlie. There is still not an effective method of improving CV-MDI QKD by the post-selection with untrusted measurement. We propose a method to improve the performance of coherent-state CV-MDI QKD protocol by virtual photon subtraction via non-Gaussian post-selection. The non-Gaussian post-selection of transmitted data is equivalent to an ideal photon subtraction on the two-mode squeezed vacuum state, which is favorable to enhance the performance of CV-MDI QKD. In CV-MDI QKD protocol with non-Gaussian post-selection, two users select their own data independently. We demonstrate that the optimal performance of the renovated CV-MDI QKD protocol is obtained with the transmitted data only selected by Alice. By setting appropriate parameters of the virtual photon subtraction, the secret key rate and tolerable excess noise are both improved at long transmission distance. The method provides an effective optimization scheme for the application of CV-MDI QKD protocols. Copyright © 2017, The Authors. All rights reserved.

关键词： Quantum cryptography

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Improved multiparty quantum key agreement in travelling mode

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science China(Physics,Mechanics & Astronomy) 2016年第12期59卷 12-21页

作者： Wei Huang Qi Su BingJie Xu Bin Liu Fan Fan HengYue Jia YingHui Yang Science and Technology on Communication Security Laboratory Chengdu 610041China State Key Laboratory of Cryptology Beijing 100878China College of Computer Science Chongqing UniversityChongqing 400044China School of Information Central University of Finance and EconomicsBeijing 100081China School of Mathematics and Information Science Henan Polytechnic UniversityJiaozuo 454000China

The need to simultaneously balance security and fairness in quantum key agreement(QKA) makes it challenging to design a flawless QKA protocol, especially a multiparty quantum key agreement(MQKA) protocol. When designing an MQKA protocol,two modes can be used to transmit the quantum information carriers: travelling mode and distributed mode. MQKA protocols usually have a higher qubit efficiency in travelling mode than in distributed mode. Thus, several travelling mode MQKA protocols have been proposed. However, almost all of these are vulnerable to collusion attacks from internal betrayers. This paper proposes an improved MQKA protocol that operates in travelling mode with Einstein-Podolsky-Rosen pairs. More importantly, we present a new travelling mode MQKA protocol that uses single photons, which is more feasible than previous methods under current technologies.

关键词： quantum cryptography multiparty quantum key agreement travelling mode cryptanalysis and improvement

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Reactive/proactive connectivity management in a tactical service-oriented infrastructure

Reactive/proactive connectivity management in a tactical ser...

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International Conference on Military communications and information Systems (ICMCIS)

作者： Roberto Rigolin F. Lopes Mikko Nieminen Antti Viidanoja Stephen D. Wolthusen Norwegian Information Security Laboratory Norwegian University of Science and Technology Gjovik Norway Communication Systems Fraunhofer FKIE Bonn Germany Patria Systems Tampere Finland School of Mathematics and Information Security Royal Holloway University of London Surrey UK

ISBN: (纸本)9781538638590

This paper introduces a model to represent the information systems using a tactical service-oriented infrastructure (TSI) together with the orchestrations of core services providing the reactive/proactive connectivity mechanisms within TSIs in/out chains. The model was instantiated with services realizing an algorithm behaving differently under stable or unstable network conditions. A quantitative analysis was performed over simulated results from a network using ns-3 and OLSRv2 with nodes organized in three mobility patterns: random, group and grid. The results suggest that connectivity graph metrics such as link changes, link duration and path availability can be used to trigger a cross-layer and service-oriented mechanism.

关键词： Wireless LAN Quality of service Mobile communication Reliability information systems Context Labeling

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Individual communication Transmitter Identification Using Correntropy-based Collaborative Representation

Individual Communication Transmitter Identification Using Co...

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International Congress on Image and Signal Processing, BioMedical Engineering and Informatics

作者： Ying-Ke Lei Science and Technology on Communication Information Security Control Laboratory

ISBN: (纸本)9781509037117

In this paper, an efficient radio transmitter identification method is proposed for identifying radio transmitters. The square integral bispectra (SIB) transformation is firstly utilized to extract the features from the raw signal data of radio transmitters, which recasts the problem of communication transmitter identification into the form of measuring similarity between points in its metric space. Then we use the collaborative representation framework as a platform to develop a novel classification model, correntropy-based collaborative representation classifier (CECRC), for identifying different radio transmitters according to the similarity between the points in the SIB feature space. Extensive experimental results on real-world data sets demonstrate the effectiveness of our proposed method.

关键词： active algorithm individual communication transmitter identification correntropy collaborative representation

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High speed continuous variable source-independent quantum random number generation

arXiv

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arXiv 2017年

作者： Xu, Bingjie Chen, Ziyang Li, Zhengyu Yang, Jie Su, Qi Huang, Wei Zhang, Yichen Guo, Hong Science and Technology on Security Communication Laboratory Institute of Southwestern Communication Chengdu610041 China State Key Laboratory of Cryptography Beijing100878 China State Key Laboratory of Advanced Optical Communication Systems and Networks School of Electronics Engineering and Computer Science Center for Quantum Information Technology Peking University Beijing100871 China State Key Laboratory of Information Photonics and Optical Communications Beijing University of Posts and Telecommunications Beijing100876 China

As a fundamental phenomenon in nature, randomness has a wide range of applications in the fields of science and engineering. Among different types of randomnumber generators (RNG), quantumrandomnumber generator (QRNG) is a kind of promising RNG as it can provide provable true randomnumbers based on the inherent randomness of fundamental quantum processes. Nevertheless, the randomness from a QRNG can be diminished (or even destroyed) if the devices (especially the entropy source devices) are not perfect or ill-characterized. To eliminate the practical security loopholes from the source, sourceindependentQRNGs, which allow the source to have arbitrary and unknown dimensions, have been introduced and become one of the most important semi-device-independent QRNGs. Herein a method that enables ultra-fast unpredictable quantum random number generation from quadrature fluctuations of quantum optical field without any assumptions on the input states is proposed. Particularly, to estimate a lower bound on the extractable randomness that is independent from side information held by an eavesdropper, a new security analysis framework is established based on the extremality of Gaussian states, which can be easily extended to design and analyze new semi-device-independent continuous variable QRNG protocols. Moreover, the practical imperfections of the QRNG including the effects of excess noise, finite sampling range, finite resolution and asymmetric conjugate quadratures are taken into account and quantitatively analyzed. Finally, the proposed method is experimentally demonstrated to obtain high secure randomnumber generation rates of 15.07Gbits/s in off-line configuration and can potentially achieve 6 Gbits/s by real-time post-processing. Copyright © 2017, arXiv, All rights reserved.

关键词： Random processes

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Multiway Dynamic Trust Chain Model on Virtual Machine for Cloud Computing

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China communications 2016年第7期13卷 83-91页

作者： Jie Zhu Guoyuan Lin Fucheng You Huaqun Liu Chunru Zhou School of Computer Science and Technology China University of Mining&TechnologyXuzhou 221116China State Key Laboratory for Novel Software Technology hosted at Nanjing University Nanjing 210093China Information Engineering School of Beijing Institute of Graphic Communication Beijing 102600China Beijing Key Laboratory of Signal and Information Processing for High-end Printing Equipment Beijing Institute of Graphic CommunicationBeijing 100026China Information Security Center Beijing University of Posts and TelecommunicationsBeijing 100876China Nanjing University of Information Science&Technology Nanjing 210044China

This paper sums up four security factors after analyzing co-residency threats caused by the special multitenant environment in the *** secure the factors,a multiway dynamic trust chain transfer model was proposed on the basis of a measurement interactive virtual machine and current behavior to protect the integrity of the system.A trust chain construction module is designed in a virtual machine *** dynamic monitoring,it achieves the purpose of transferring integrity between virtual machine.A cloud system with a trust authentication function is implemented on the basis of the model,and its practicability is shown.

关键词： cloud computing virtual machine trustworthiness measurement dynamic trust transfer

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