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14th International Conference on Space Operations, SpaceOps 2016

作者： Zowayed, Khalid Al Harmi, Mohammed Dubai United Arab Emirates

ISBN: (纸本)9781624104268

DubaiSat-2 is the United Arab Emirates (UAE) second earth observation satellite. It was launched into a 600 km orbit on the 21st of November 2013. The satellite is owned and operated by the Mohammed Bin Rashid Space Centre (MBRSC) to provide electro-optical images, that can be commercialized, for users within the United Arab Emirates and beyond and to develop and implement new technologies not used in ***-2 is designed for a sun-synchronous orbit of 600km, with a spatial resolution of 1m PAN and 4m Multispectral (MS), and a Swath of 12.2 km. This paper highlights the use of DubaiSat-2 imagery order handling. The satellites images are processed at Mohammed bin Rashid Space Centre headquarters in Dubai to functional specifications demanded by commercial and government clients to meet a range of urban planning, environmental monitoring and geographical measuring criteria. the key feature in advanced imaging in Dubai Sat -2 is the High resolution Advanced Imaging System (HIRAIS) which implements advanced image acquisition, increased image storage capacity, improved X-band data transmission speed and image data encryption and compression. In addition, this paper will compare image handling used in DubaiSat-1 with the one used in DubaiSat-2. Lesson learned and experience from DS-1 imaging experience will be highlighted and will indicate how it got improved in the new system of HIRAIS imaging in DS-2. © 2016 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.

关键词： image enhancement

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A Robust, Non-blind High Capacity Secure Digital Watermarking Scheme for image Secret Information, Authentication and Tampering Localization and Recovery via the Discrete Wavelet Transform

A Robust, Non-blind High Capacity Secure Digital Watermarkin...

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2019 IEEE International Symposium on technologies for Homeland Security, HST 2019

作者： Chaughule, S.S. Megherbi, D.B. CMINDS Research Center University of Massachusetts Department of Electrical and Computer Engineering Lowell United States

ISBN: (纸本)9781728150925

In today's world accessibility and trade of advance digital information over the web is of key significance. Security and verification of digital information, including digital images, is one of the greatest concerns. For this specific reason, in this paper we propose a non-blind watermarking technique for self-recovery and authentication of hidden images against unauthorized tampering by utilizing the Discrete Wavelet Transform (DWT) and the Arnold's Transform. Due to the nature of the Discrete Wavelet Transform, DWT-based watermarking schemes, in general, have the hidden images size limited to up to 1/4 of the carrier image size;that is, for example, for a 256 x 56-carrier image the size of the hidden images is usually up to 128 x 128. In this paper, we show how the proposed DWT-based technique (a) has a moderately high capacity capability as it allows hidden images of the same size as that of the carrier image, (b) uses a self-recovery framework for watermarking and information hiding that allows embedding twice the number of correction matrices as in prior related work. This makes the proposed non-blind technique equipped with about twice as much capability of self-recovery from unauthorized tampering as in prior work, (c) allows unauthorized tampering localization and recovery against unauthorized tampering such as image cropping, blurring, pixel tampering, (d) utilizes all three-color channels of a carrier image for watermarking and information hiding, and (e) adds security in the secret hidden image information. Experimental results are presented to show the potential value of the proposed non-blind method for multiple information hiding of same size and the carrier image, tampering detection/localization, authentication, and tampering self-recovery, including cropping, and robustness of the proposed scheme to JPEG compression and encryption, and other unauthorized tampering. © 2019 IEEE.

关键词： Discrete wavelet transforms

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A perceptual encryption scheme for Motion JPEG 2000 standard

A perceptual encryption scheme for Motion JPEG 2000 standard

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International Symposium on Communications and Information technologies (ISCIT)

作者： Osamu Watanabe Takahiro Fukuhara Hitoshi Kiya Dept. of Electronics & Computer Systems Takushoku University Faculty of Info. and Commun. Systems Tokyo Metropolitan University

A new perceptual encryption scheme with an efficient key-management mechanism for the Motion JPEG 2000 based ETC system is proposed in this paper. An ETC system is known as a system that makes image/video communication secure and efficient by using perceptual encryption and image/video compression. Unlike conventional ETC systems, the perceptually encrypted images by the proposed scheme can be efficiently compressed by the Motion JPEG 2000. Moreover, an efficient mechanism to manage a lot of secret keys for video sequences is provided to avoid complex key-management. The experimental results demonstrated that the proposed scheme achieved both acceptable compression performance and enough security for secure image/video communication while remaining compatible with the Motion JPEG 2000 standard.

关键词： encryption Transform coding image coding Discrete wavelet transforms Video sequences Standards

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An adaptive JPEG compression-encryption system using optimized local quantization matrices

An adaptive JPEG compression-encryption system using optimiz...

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International Conference on Electrical and Computing technologies and Applications (ICECTA)

作者： Rimah Y. Bani Youniss Moh'd Belal Al-Zoubi Arafat Awajan Computer Engineering Department PSUT Amman JO Computer Graphics Department PSUT Amman Jordan Computer Science Department PSUT Amman Jordan

ISBN: (纸本)9781538608739

The JPEG compression techniques are known as a standardlossy compression techniques for images. In this paper, an adaptive approach is proposed where some changes in the quantization stage are made. The proposed approach mainly changes on the quantization matrix, according to the context of each image. Moreover, the adaptive approach has been developed to work as an encryption system that enables users to restore the original images after decompressing them. Compared to the standard JPEG quantization matrix, the proposed approach introduces an efficient compression system that decreases error rate in several tested scenarios, And efficient encryption system has been obtained as well.

关键词： image coding Transform coding encryption Standards Adaptive systems Quantization (signal) Discrete cosine transforms

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The implementation of chaotic encryption scheme for images

The implementation of chaotic encryption scheme for images

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International Conference on Control, Instrumentation, Communication and Computational technologies (ICCICCT)

作者： Veenus P K K Sivasankar Vivek P K V S Dharun Department of CSE Noorul Islam University Kumaracoil Tamil Nadu India Department of IT Noorul Islam University Kumaracoil Tamil Nadu India Department of ECE METS School of Engg Mala Kerala India

ISBN: (纸本)9781467398268

The conventional encryption methods are not appropriate for image cryptography as they contain large amount of data and the pixels have strong correlation. A new approach for chaotic encryption scheme for image is proposed through this paper. This image encryption algorithm is a modification of baptista's chaotic system. Analysis shows that the compression performance and encryption speed of the proposed system is much better.

关键词： Chaotic communication encryption Trajectory Ciphers Generators

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1st International Conference on Advances in Electrical and Computer technologies, ICAECT 2019

1st International Conference on Advances in Electrical and C...

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1st International Conference on Advances in Electrical and Computer technologies, ICAECT 2019

ISBN: (纸本)9789811555572

The proceedings contain 119 papers. The special focus in this conference is on Advances in Electrical and Computer technologies. The topics include: Sum modified laplacian-based image fusion in dct domain with super resolution;a supplement to "pre: A simple, pragmatic, and provably correct algorithm";effective compression of digital images using spiht coding with selective decomposition bands;reconfigurable lut-based dynamic obfuscation for hardware security;detection and control of phishing attack in electronic medical record application;smart apron using embroidered textile fractal antenna for e-health monitoring system;design of modified wideband log periodic microstrip antenna with slot for navigational application;machine learning approach to condition monitoring of an automotive radiator cooling fan system;sensors network for temperature measurement in a cocoa fermentator;communication-aware virtual machine placement in cloud;migration from silicon to gallium nitride devices—a review;high-speed modified da architecture for dwt computation in secure image encoding;satellite image classification with data augmentation and convolutional neural network;design and randomness evaluation of a chaotic neural encryption and decryption network for trng;circuit modelling of graphene and carbon nanotube-based multilayer structures for high-frequency absorption;pi and sliding mode control of quanser qnet 2.0 hvac system;robust control of position and speed for a dc servomotor system using various control techniques;mpc-based temperature control of cstr process and its comparison with pid;microgrid integration in kerala power grid—a case study;design of control system for autonomous harvester based on navigation inputs;design and optimization of microgrid as ev charging source;preface.

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Effect on Reconstruction of images by Applying Fractal Based Lossy compression Followed by Symmetrical encryption Techniques

Effect on Reconstruction of Images by Applying Fractal Based...

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International Conference on Computing and Networking Technology (ICCNT)

作者： Neetu Gupta Ritu Vijay Banasthali University Banasthali India Banasthali University Banasthali Indi

ISBN: (数字)9781728168517

ISBN: (纸本)9781728168524

compression and encryption are two major aspects of cryptanalysis. compression reduces the large bandwidth requirement while encryption provides security against differential unethical attacks during transmission of images over a channel. The fractal based compression algorithm is proposed to remove the redundant data as it makes the image resolution independent. Here, AES and DES symmetrical encryption techniques are used over compressed images. The efficiency of proposed compression technique is evaluated by performance evaluation parameters like PSNR, MSE and SSIM. The effects on these performance evaluation parameters, when symmetrical encryption techniques are imposed on compressed images, are also analysed. The capacity of encryption techniques to procure the information from differential attacks is also analysed by calculation of differential parameters like NPCR and UACI. This experiment is performed on standard set of five grayscale test images. This paper shows that fractal-DES cryptanalysis system uses minimum bandwidth during transmission and provides better security and efficient reconstruction of images over fractal-AES cryptanalysis system.

关键词： image coding encryption Fractals image reconstruction Histograms Performance evaluation Bandwidth

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Securing Medical images using compression techniques with encryption and image Steganography

Securing Medical Images using Compression techniques with en...

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Intelligent technologies (CONIT), International Conference on

作者： Pooranakala K. Vanita Jaitly Department of Computer Applications Hindustan Institute of Technology and Science Chennai Tamil Nadu India

Medical imaging is an essential component of the healthcare sector, enabling the transfer of medical images between widely separated locations to improve healthcare business practices. However, the transmission of medical images across public networks can result in several security concerns, including those related to authentication, integrity, and confidentiality. Therefore, the major goal of this research is to ensure the security and accuracy of medical images by maintaining their confidentiality and integrity. This proposed method aims to enhance the security of medical images during their transmission across public networks. The method involves three main steps: compression, encryption, and embedding To achieve the goal of maintaining the integrity and confidentiality of medical images, this research utilizes a multi-step process. First, the medical image undergoes compression using the Singular Value Decomposition (SVD) technique to reduce its size and eliminate any noise. Following this, the compressed image is encrypted using the Advanced encryption Standard (AES) algorithm to ensure confidentiality. Finally, the encrypted image is securely enclosed within a cover image using the Least Significant Bit (LSB) steganographic technique to create a stego image. This technique ensures that the encrypted image is seamlessly incorporated within the cover image, without any visible or perceptible changes. This method ensures that the medical image remains confidential and maintains its integrity throughout the transmission process. Furthermore, this study developed the aforementioned technique, and the experimental outcomes were compared using MATLAB to hide medical images without encryption using LSB steganography as an additional layer of security. This study analyzed multiple medical image formats, including DICOM, TIFF, BMP, and JPEG. The findings indicate that combining encryption and steganography techniques provides improved results in terms of PSNR and MSE va

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Congress on Smart Computing technologies, CSCT 2022

Congress on Smart Computing Technologies, CSCT 2022

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Congress on Smart Computing technologies, CSCT 2022

ISBN: (纸本)9789819924677

The proceedings contain 40 papers. The special focus in this conference is on Smart Computing technologies. The topics include: An Interactive Voicebot for Visually Challenged: Empowering the Realm Among Deaf-Mute and Normal Community;Behavior Intrusion Detection System Using SVM and CNN;classifying Wear Particles Based on Texture Analysis;intelligent Systems in Production Planning for an Assemble-to-Order Production System;an Efficient Iterative Methods for Solving Transcendental Equations;behavioural Intention to Adopt Mobile Banking by Millennials: Empirical Evidence from India;Application of the Platforms for IP Network Modeling to Characterize the Traffic in a VoIP Network;Steel Surface Defect Detection and Classification Using Bag of Visual Words with BRISK;a Survey of Cryptographic Algorithms for encryption and Key Transmission;a Convolution Neural Network Model to Classify Handwritten Digits from Skeletons;forecasting the Concentration of Initial Substances and Products in the Oil Refining Process;a Sustainable Approach to Marketable Banking Stress and Burnout;heart Disease Prediction—A Computational Machine Learning Model Perspective;drought Prediction—A Comparative Analysis of Supervised Machine Learning Techniques;using Supervised Ensemble Machine Learning Algorithm in the Recruitment Process;faulty Process Detection Using Machine Learning Techniques;x-Tract: Framework for Flexible Extraction of Features in Chest Radiographs for Disease Diagnosis Using Machine Learning;a Model for Classification Based on the K-Means Method Using the Gap-Statistic Algorithm;classification-Based Fractal image compression with Efficient Domain Pool Design;DynaSim: A Ball-by-Ball Simulation of the Dynamics of an IPL T20 Game;a Wavelet Thresholding-Based Approach for Denoising the Color image Affected by Gaussian Noise;real-Time Flood Prediction System Using Machine Learning Algorithms.

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An Efficient image Privacy-Preserving Scheme Based On Mixed Chaotic Map and compression

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INTERNATIONAL JOURNAL OF image AND GRAPHICS 2022年第2期22卷

作者： Tanveer, Muhammad Shah, Tariq Ali, Asif Shah, Dawood Quaid I Azam Univ Dept Math Islamabad 44000 Pakistan

In the digital modern era, multimedia security has turned into a major concern by the rapid growth of network technologies and digital communications. Accordingly, from the last few decades, the application of nonlinear dynamics and chaotic phenomena for multimedia data security earn significant attention. In this paper, an efficient image-encryption technique based on a two-dimensional (2D) chaotic system combine with the finite field of the specific order is introduced. The proposed scheme consists of four modules which are the separation of bits, compression, 2D chaotic map, and small S-boxes. Initially, the suggested scheme separates the pixels of the image into the least significant bits (LSB) and the most significant bits (MSB). Subsequently, the compression algorithm on these separated bits is applied and instantly transformed the MSB of the image into LSB. The key objective of the first module is to minimize the range of the pixel value up to eight times less than the original image, which consequently reduces the time complexity of the scheme. In the end, a 2D chaotic map is used to reshuffle the bytes to interrupt the internal correlation amongst the pixels of the image. At the tail end, the small S-boxes have been used to substitute the permuted image. The significance of small S-boxes plays a vital role to maintain the optimum security level, prevent computational effort, and reduced time complexity. The result of the suggested encryption system is tailor-made for instantaneous communication.

关键词： Chaos-based image encryption Small S-boxes 2D chaotic map compressed image Lempel-Ziv-Welch

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