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检索条件"任意字段=Conference on Mathematics of Data/Image Coding, Compression, and Encryption VI, with Applications"

共 93 条记录，以下是81-90 订阅

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video motion and Decryption. A Comparative Study for Compressed videos

Video motion and Decryption. A Comparative Study for Compres...

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Workshops on image Processing Theory, Tools and applications, IPTA

作者： Anastasiia Voitenko Mourad Oussalah Faculty of ITEE Centre for Machine Vision and Signal Processing University of Oulu Oulu Finland

ISBN: (数字)9798331541842

ISBN: (纸本)9798331541859

Transmission of video data is known to cause high privacy leak risk due to effect of data compression rates and disparate standards, which challenge encryption/decryption methods. This paper presents a comparison of AES cipher, Arnold Cat chaotic map and Logistic chaotic map in the context of various video motion types (slow, medium and fast). The study aims to distinguish the video motion types according to decryption result. For this purpose, several performance metrics were tested, which include unified averaged changed intensity (UACI), number of changing pixel rate, peak signal-to-noise ratio, correlation coefficient (CC) and histogram of intensity. A simulation setting is devised where each video undergoes encryption phase, followed by lossy compression using discrete cosine transform and followed by image decryption phase. Simulation results demonstrate that AES and Logistic chaotic map present relatively close performance outperformance that of Arnold cat map. On the other hand, correlation coefficient appears to be the only performance metric that presents interesting capabilities to distinguish slow-motion video from medium and fast-motion types.

关键词： Measurement Correlation coefficient Histograms image coding PSNR video compression encryption Discrete cosine transforms Standards Logistics

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A Novel image encryption and Decoding Approach Based on DNA coding and Arnold's Transformation for IoT applications

A Novel Image Encryption and Decoding Approach Based on DNA ...

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Telecommunications conference (ITC-Egypt), International

作者： Nawal Shaltout Ahmed A. Abd El-Latif Waleed Al-Adrousy Mohamed Hammad Abdelhamied A. Ateya Samir Elmougy Department of Computer Science Faculty of Computers and Information Mansoura University Mansoura Egypt EIAS Data Science Lab College of Computer and Information Sciences Prince Sultan University Riyadh Saudi Arabia Department of Mathematics and Computer Science Faculty of Science Menoufia University Egypt Department of Information Technology Faculty of Computers and Information Menoufia University Shibin El Kom Egypt Department of Electronics and Communications Engineering Zagazig University Zagazig Egypt

ISBN: (数字)9798350351408

ISBN: (纸本)9798350351415

Nowadays, the Internet of Things (IoT) is significantly utilized by an extensive range of applications that lead to the enhancement of different aspects of defense and military capabilities. In IoT, a wide range of smart devices that can communicate with each other are connected through it. Therefore, it is essential to protect multimedia data, especially images with an encryption approach that offers a sufficient degree of security in military applications. Hence, this paper introduces an effective scheme for image encryption and decoding relying on Arnold's transformation DNA coding. It proposes a new pseudo-random number generation PRNG using the Sine-Logistic map and Duffing map called SLDM. The encryption method involves three phases: 1- Key generation and PRNG. 2- confusion phase using the Arnold transformation method. 3- diffusion using DNA rules and operations. The results based on the USC-SIPI dataset, show that the suggested scheme is sufficiently resistant to every kind of attack. Furthermore, the suggested method yields NPCR scores of around 99.62% and UACI scores of approximately 33.48%. Due to its low complexity, it has a great deal of potential for safe and real-time picture applications.

关键词： Resistance image coding Chaotic communication DNA encryption Decoding Telecommunications

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Implementation of steganography using LSB with encrypted and compressed text using TEA-LZW on Android

Implementation of steganography using LSB with encrypted and...

引用

International conference on Computer, Control, Informatics and Its applications (IC3INA)

作者： Made Sumarsana Adi Putra Gelar Budiman Ledya Novamizanti Telkom Engineering School Telkom University Bandung Indonesia

The development of data communications enabling the exchange of information via mobile devices more easily. Security in the exchange of information on mobile devices is very important. One of the weaknesses in steganography is the capacity of data that can be inserted. With compression, the size of the data will be reduced. In this paper, designed a system application on the Android platform with the implementation of LSB steganography and cryptography using TEA to the security of a text message. The size of this text message may be reduced by performing lossless compression technique using LZW method. The advantages of this method is can provide double security and more messages to be inserted, so it is expected be a good way to exchange information data. The system is able to perform the compression process with an average ratio of 67.42 %. Modified TEA algorithm resulting average value of avalanche effect 53.8%. Average result PSNR of stego image 70.44 dB. As well as average MOS values is 4.8.

关键词： image coding Dictionaries encryption PSNR image resolution Indexes

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visual security assessment for video encryption

Visual security assessment for video encryption

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International conference on Communications and Networking in China (CHINACOM)

作者： Ye Yao Zhengquan Xu Wei Li College of Computer & Information Engineering Zhejiang Gongshang University Hangzhou China State Key Laboratory of Information Engineering in Surveying Mapping and Remote Sensing Wuhan University of China Wuhan China

video data security is very important for multimedia applications, such as video surveillance and real time videoconference. Although many video encryption methods have been reported, no systematic visual security assessment means have been proposed. Now, security analysis of video encryption put emphasis only on the encryption algorithm itself. However, the intelligibility of the encrypted video needs also to be investigated. Typically, the objective assessment is required to assess how much the video information in cipher-videos is distorted, shuffled, and unrecognized. In this paper, three visual security assessment methods are presented for video encryption. They are structure distortion, image entropy, and spatial correlation. Experiment results are presented and analyzed. It shows that our scheme can provide objective assessment compliant with subjective assessment, and is also suitable for the security assessment of other selective video encryption algorithms.

关键词： Cryptography video compression Information security Quality assessment image reconstruction data security Entropy image coding Decoding Algorithm design and analysis

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Sparse natural image statistics and their applications to colorization and compression

Sparse natural image statistics and their applications to co...

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IEEE International conference on image Processing

作者： Alexander Balinsky Nassir Mohammad School of Mathematics Cardiff University UK Hewlett Packard Laboratories Bristol UK

Statistical analysis of natural luminance and colour images have shown to display non-Gaussian distributions. We review a recent result on the non-linear sparse filter response distribution observed in, and illustrate its application to the problem of colorizing natural gray images. We further utilise elements of both image statistics and colorization for compression of the chromacity channels of image data.

关键词： image color analysis image coding Pixel Optimization image reconstruction Compressed sensing Minimization

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Transparent and perceptually enhanced JPEG image encryption

Transparent and perceptually enhanced JPEG image encryption

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International conference on Digital Signal Processing (DSP)

作者： Bian Yang Chong-Qing Zhou Christoph Busch Xia-Mu Niu Department of Computer Science and Technology Harbin Institute of Technology China Norwegian Information Security Laboratory Gjovik University College Norway

In many applications encryption/decryption of compressed images or videos is desired to be transparent to the compression decoder to maintain the file format, file size and content-relevant functionalities. We propose in this paper a transparent encryption mechanism for JPEG-encoded image files to meet the requirements of format-compliance and file-size preservation. The algorithm is based on a special cross-block varied-length codes (VLC) shuffling method perceptually enhanced by a reversible histogram spreading processing, which tends to smoothly re-distribute VLCs among spatial blocks in a reversible way. The algorithm performs visually better than existing shuffling based schemes against content leakage attacks such as DC value removal.

关键词： Cryptography Streaming media Information security image coding videos Decoding data security Histograms Authentication image storage

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DICOM image compression using Bilinear interpolation

DICOM image compression using Bilinear interpolation

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IEEE EMBS International conference on Information Technology applications in Biomedicine (ITAB)

作者： G. Uma Vetri Selvi R. Nadarajan Department of Mathematics & Computer Applications Coimbatore India

In this paper, we propose a new lossy image compression algorithm for DICOM ( Digital Imaging and Communications in Medicine) images using Bilinear interpolation. This method presents a technique for classification of the image blocks on the basis of threshold value of variance. The image is divided into [m×n] blocks. Depending on the variance, the block is classified as significant or insignificant. The corner pixels of the blocks are stored and the remaining pixels are obtained by bilinear *** difference between the original and interpolated image is calculated and the difference is transmitted along with corner pixels and header data. At the receiving end, images are reconstructed with corner pixels. The difference is added only to the significant blocks. The experimental results shows that the proposed technique yields better performance by yielding good compression ratio and PSNR which is much desired in medical images.

关键词： PSNR Magnetic resonance imaging Computed tomography DICOM image coding Pixel

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A low computational method of secure video streaming in mobile system

A low computational method of secure video streaming in mobi...

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International conference on Computer applications and Industrial Electronics (ICCAIE)

作者： Mohammed A. Saleh Habibah Hashim Nooritawati Md. Tahir Faculty Of Electrical Engineering Universiti Teknologi MARA Shah Alam Selangor Malaysia

Huge revolution in mobile systems opens the field toward exploit of video streaming, enabling broadcasting a real time video through the network, also live event can be seen from anywhere, the video data has to be compressed before transmitting, in addition to that, the encryption process is compulsory in order to secure a transmitted data stream. This leads to increase the resource consumption requirements such as computational overhead. Hence, in this paper, an overview of video streaming security in limited resources devices is presented, a new method for secure video streaming. In the proposed method, we will focus on: The data structure of video streaming, explaining the encryption and decryption process that performed in a video transmitting, and to exploit the structure of the H.264/AVC standard for encrypting a specific syntaxes. The method will be performed in two phases; (1) encoding video streaming and (2) decode video bitstream, in the first phase, the encryption for a specific part of encoded video data will be performed using AES algorithm, in the second phase, the encrypted syntaxes of the bitstream will be decrypted. By APPLYING this method; the technique for securing the video stream in a limited resource device will be enhanced, mitigate the effects of compression and encryption process on the computational overhead during real-time multimedia transmission. This method is capable to prevent attacks on video streaming data, as well as the compliance format between the encoder and decoder will be maintained.

关键词： Streaming media encryption Multimedia communication Discrete cosine transforms image coding

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compression-encryption Based Efficient Dual image Watermarking for e-Healthcare applications

Compression-Encryption Based Efficient Dual Image Watermarki...

引用

Electronics, Communication and Signal Processing (ICECSP), International conference on

作者： Gautam Malhotra Abhimanyu Atri Jyoti Rani Ashima Anand Computer Science and Engineering Thapar Institute of Engineering and Technology

ISBN: (数字)9798350364590

ISBN: (纸本)9798350375381

The requirement to protect the authenticity and accuracy of images motivates the implementation of water-marking on these images. Any alteration or interference with medical images might lead to erroneous diagnosis or treatment, as these images are vital for diagnosing and tracking diseases. Moreover, these photographs are regularly transmitted across the internet, increasing the potential for unauthorized access and alteration. Therefore, medical image watermarking is essential to safeguard the reliability and accuracy of these medical images in research and clinical environments. This paper presents a framework of a highly safe and reliable dual watermarking technique that utilizes the NSST-Radon transform to improve medical data security. The ultimate watermarked image is created by incorporating fingerprint and patient information into a medical image, resulting in dual watermarking. After embedding, the final watermarked image is compressed and encrypted to add a security layer. Moreover, our approach uses the best scaling factor to manage the robustness and imperceptibility tradeoffs. The experimental results indicate that the suggested approach demonstrates exceptional overall performance, a high level of imperceptibility, and resilience. The proposed scheme uses dual watermarking to safeguard original medical and non-medical images. The experimental and comparison results show that this strategy produces superior results with remarkable resilience, invisibility, and capacity.

关键词： image coding Three-dimensional displays Chaotic communication Transform coding Watermarking Transforms Robustness encryption Medical diagnostic imaging Resilience

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A Secure image Steganography Using Improved Lsb Technique And vigenere Cipher Algorithm

A Secure Image Steganography Using Improved Lsb Technique An...

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Artificial Intelligence and Smart Systems (ICAIS), International conference on

作者： Lasya Voleti R M Balajee Siva Koteswararao Vallepu Karthik Bayoju Devireddy Srinivas Koneru Lakshmaiah Education Foundation Vaddeswaram Guntur Andhra Pradesh India

ISBN: (数字)9781728195377

ISBN: (纸本)9781728195384

Steganography is the practise of concealing information in another type. Many different carrier file formats may be used, but digital images are most popular. This involved with the stronger and weaker image hiding, file compression, file locking, file encryption and file decryption. The applications are having the capability for establishing the characteristics like absolute confidentiality, whereas other applications are in requirement of secrecy on a large message. The aim of this analysis is to include a description which outlines the criteria of a good steganographic algorithm and briefly discusses best techniques which are in use. The knowledge is processed electronically because of development in the area of ICT. Therefore, privacy and security has been a big concern. It may also be used to encrypt messages which are embedded in a digital host before being sent to the network, thus their existence is uncertain in nature. The mechanism of hiding and encrypting sensitive data may be extended to the copyright protection of interactive media, audio, video and images. It can also be utilized to further protect the integrity of digital records. This is the practise of concealed touch. The objective towards aim is to submit the documents and to create numerous uses, then the message to be hidden is encoded with a vegenerous chip algorithm and saved in an image with the LSB steganography and finally, the virgin chip decryption algorithm can be used to obtain a real code.

关键词： Privacy image coding Transmitters Digital images Media encryption Synchronization

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