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Selective encryption using ISMACryp in real time video streaming of H.264/AVC for DVB-H application

World Academy of Science, Engineering and Technology 2011年 55卷 342-346页

作者： Joshi, Jay M. Dalal, Upena D. Electronics and Telecommunication Dept S. V. M. nst. of Tech Bharuch 392001 India Electronics Engineering Dept Sardar Vallabhbhai National Institute of Technology Surat India

Multimedia information availability has increased dramatically with the advent of video broadcasting on handheld devices. But with this availability comes problems of maintaining the security of information that is displayed in public. ISMA Encryption and Authentication (ISMACryp) is one of the chosen technologies for service protection in DVB-H (digital video Broadcasting Handheld), the TV system for portable handheld devices. The ISMACryp is encoded with H.264/AVC (advanced video coding), while leaving all structural data as it is. Two modes of ISMACryp are available;the CTR mode (Counter type) and CBC mode (Cipher Block Chaining) mode. Both modes of ISMACryp are based on 128-bit AES algorithm. AES algorithms are more complex and require larger time for execution which is not suitable for real time application like live TV. The proposed system aims to gain a deep understanding of video data security on multimedia technologies and to provide security for real time video applications using selective encryption for H.264/AVC. Five level of security proposed in this paper based on the content of NAL unit in Baseline Constrain profile of H.264/AVC. The selective encryption in different levels provides encryption of intra-prediction mode, residue data, inter-prediction mode or motion vectors only. Experimental results shown in this paper described that fifth level which is ISMACryp provide higher level of security with more encryption time and the one level provide lower level of security by encrypting only motion vectors with lower execution time without compromise on compression and quality of visual content. This encryption scheme with compression process with low cost, and keeps the file format unchanged with some direct operations supported. Simulation was being carried out in Matlab.

关键词： Authentication

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Enhancing selective ISMACryp video encryption for real time applications in handheld devices

Enhancing selective ISMACryp video encryption for real time ...

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IEEE Region 10 International Conference TENCON

作者： Jay M. Joshi Upena D. Dalal Electronics and Telecommunication Department S. V. M. Institute of Technology Bharuch India Electronics Engineering Department Sardar Vallabhabhai National Institute of Technology Surat India

The availability of multimedia information has been increased dramatically with the advent of video broadcasting on handheld devices. But with this availability comes problems of maintaining the security of information that is displayed in public. ISMA Encryption and Authentication (ISMACryp) is technologies for video content protection in DVB-H (digital video Broadcasting- Handheld), the TV system for portable handheld devices. The ISMACryp is encoded with H.264/AVC (advanced video coding), while leaving all structural data as it is. Two modes of ISMACryp are available; the CTR mode (Counter type) and CBC mode (Cipher Block Chaining) mode. Both modes of ISMACryp are based on 128-bit AES algorithm. This paper deals with AES-CTR mode. AES algorithms are more complex and require larger time for execution which is not suitable for real time application like Live TV, video chatting or video conferencing on handheld device. The proposed system aims to gain a deep understanding of video data security on multimedia technologies and to provide security for real time video applications using selective encryption for H.264/AVC. Five level of security proposed in this paper based on the content of NAL unit in Baseline Constrain profile of H.264/AVC. The selective encryption in different levels provides encryption of intra-prediction mode, residue data, inter-prediction mode or motion vectors only. Experimental results shown in this paper described that fifth level which is ISMACryp provide higher level of security with more encryption time and the one level provide lower level of security by encrypting only motion vectors with lower encryption time without compromise on compression and quality of visual content. This encryption scheme with compression process with low cost, and keeps the file format unchanged with some direct operations supported. Simulation was being carried out in Matlab.

关键词： Encryption Streaming media Encoding Handheld computers Decoding

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The Reconfigurable video Coding Standard

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IEEE SIGNAL PROCESSING MAGAZINE 2010年第3期27卷 159-+页

作者： Mattavelli, Marco Amer, Ihab Raulet, Mickael German Univ Cairo Cairo Egypt Inst Elect & Telecommun Rennes Rennes France

More than two decades of research in digital video technologies, together with the emergence of successful international standards for digital video compression, have led to a wide variety of digital video products using video compression for professional and consumer applications. Although many of these video compression standards share common and/or similar coding tools, there is currently no explicit way to exploit such commonalities at the level of the specifications nor at the level of implementations. Moreover, the possibility of taking advantage of the benefits of the continuous improvements of coding technology is only possible by replacing an old standard with a new one. This usually results in the replacement of the existing multimedia devices with new ones capable of handling the new deployed standards. Such necessity is not always well accept-ed by the public and professionals for obvious reasons.

关键词： video coding video compression Automatic voltage control Technological innovation Standardization Signal processing algorithms video sharing MPEG standards Codecs ISO standards

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Subjective Evaluation of Next-Generation video compression algorithms: A Case Study

Subjective Evaluation of Next-Generation Video Compression A...

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Conference on Applications of digital Image Processing XXXIII

作者： De Simone, Francesca Goldmann, Lutz Lee, Jong-Seok Ebrahimi, Touradj Baroncini, Vittorio Ecole Polytech Fed Lausanne Lausanne Switzerland FUB Rome Italy

ISBN: (纸本)9780819482945

This paper describes the details and the results of the subjective quality evaluation performed at EPFL, as a contribution to the effort of the Joint Collaborative Team on video Coding (JCT-VC) for the definition of the next-generation video coding standard. The performance of 27 coding technologies have been evaluated with respect to two H.264/MPEG-4 AVC anchors, considering high definition (HD) test material. The test campaign involved a total of 494 naive observers and took place over a period of four weeks. While similar tests have been conducted as part of the standardization process of previous video coding technologies, the test campaign described in this paper is by far the most extensive in the history of video coding standardization. The obtained subjective quality scores show high consistency and support an accurate comparison of the performance of the different coding solutions.

关键词： subjective quality assessment High Efficiency video Coding (HEVC) Joint Collaborative Team on video Coding (JCT-VC) H.264/MPEG-4 AVC

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video Encryption Technology and Application

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丛书名： Media and Communications - technologies, Policies and Challenges

2010年

作者： Zhengquan Xu Jing Sun

ISBN: (数字)9781616687342

ISBN: (纸本)9781616683313

video encryption technology is a combination of cryptography and video technology. video encryption has become a specialized research branch in data encryption files because of its particular requirements and the special properties of video data. This book introduces several aspects of video encryption related research methods and technology solutions. A thorough description of video encryption techniques included its performance requirements, principles for designing a secure video encryption algorithm, the primary encryption algorithms and analysis, the latest research achievement, as well as its performance evaluations, novel applications are given. In addition, the open problems and potential research area of video encryption is discussed in this new and unique book.

关键词： digital video video compression Data encryption (Computer science)

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FPGA Based Symmetric Multi-core Processors for Optimized Performance of H.264 Encoder

FPGA Based Symmetric Multi-core Processors for Optimized Per...

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International Conference on Advances in Recent technologies in Communication and Computing, ARTCom

作者： E. MuraliKrishnan E. Gangadharan P. NirmalKumar Department of Electronics and Instrumentation Engineering Anand Institute of Higher Technology Chennai India Department of Electronics and Communication Engineering Anand Institute of Higher Technology Chennai India Department of Electronics and Communication Engineering Anna University Chennai India

digital video technology is burgeoning new standards broadening the gamut of prerequisites such as high definition video quality and more resolution substantially at lower bit rates than previous standards. Among the latest video compression algorithms, the newly established H.264 standard has become increasingly popular. However, the high coding efficiency of it comes at the cost of increase in computational complexity which makes the real-time implementation a great challenge. Previous works in video compression implement a dual core DSP processor executing this composite H.264 algorithm in parts, but has certain bottlenecks like timing, reliability and efficiency with a small overhead of synchronization. With higher interprocessor bus speeds, streamlined memory and a highly programmable FPGA multi-core architecture the limitations of current platforms based on DSPs and ASICs can be overwhelmed. This paper presents an FPGA based multicore processor implementation to optimize the H.264 encoder performance between the cores providing scalability, attaining load balance among the cores and parallel execution reducing the dependability of resources. This enables a more effectual use of processing power of the cores.

关键词： Field programmable gate arrays Multicore processing Streaming media digital signal processing Encoding Motion estimation Image coding

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Graduation Project Implementation of Hardware digital DCT based Image coder

Graduation Project Implementation of Hardware Digital DCT ba...

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26th National Radio Science Conference (NRSC 2009)

作者： Aly, Ahmed Osama Aly, Perihane Ahmed Daniel, Sherif Roshdy Fahmy, Gamal German Univ Cairo Egypt

ISBN: (纸本)9781424442140

Visual media is growing massively at a rapid pace. This is due to the advancement of broadband networks/internet, DSP/media processors and VLSI technology. Application areas include high definition television, multimedia communications and teleconferencing. Despite rapid increase in mass-storage density, processor speeds, and digital communication data rates, the demand for visual data storage and visual data transmission bandwidth continues to surpass the capabilities of available technologies. Hence, there have been increasing efforts to develop reliable visual data compression techniques that provide a cost effective solution for the storage and transmission of visual data. The recent MPEG 4 and JPEG 2000 standards address the need for content-based compression, coding and manipulation of visual media. With the evolution and inexpensiveness of hardware programmable devices such as Field Programmable Gate Arrays (FPGA's), the implementation and realization of different image and video coding algorithms has become possible and affordable in many of the visual data communication and storage industries, such as digital TV receivers, mobile devices and internet communications servers.

关键词： Teleconferencing

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Visual media coding and transmission /

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2009年

作者： [edited by] Ahmet Kondoz.

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Research and Realization of Improved Algorithm for H.264/AVC Oriented to video Conference under the RTI Framework

Research and Realization of Improved Algorithm for H.264/AVC...

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International Conference on the digital Society

作者： Wei Zheng Jun Cao Chenglie Du Shuming Zhang School of Computer Science and Engineering Northwestern Polytechnical University Xi'an China

video data compression is one the core technologies of video conference, which aims to enable significantly high performance data coding. In order to achieve this, a robust rate-distortion optimization (RDO) technique is needed to be employed to select the best coding mode This paper presents optimization solution about inter prediction mode decision algorithm of H.264/AVC for video conference under the HLA/RTI framework. Our objective is to reduce the computational complexity of the CODEC (coder & decoder) with insignificant rate-distortion performance degradation.

关键词： Automatic voltage control videoconference video compression Rate-distortion Data compression Robustness Prediction algorithms Computational complexity Codecs Decoding

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A Unified Framework for Analysis of MPEG-4 algorithms and CODEC Development

A Unified Framework for Analysis of MPEG-4 Algorithms and CO...

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International Conference on Computer Sciences and Convergence Information Technology (ICCIT)

作者： S. Vijayalakshmi D. Prabu T. M. Vinodhvenkatesh School of Computing Sciences VIT University Vellore India Wipro Technologies School of Computing Sciences NJ USA Jasmin Info-tech Pvt Ltd' Chennai India

Due to rapid increase in data growth and tremendous advancement in digital video technology, it becomes necessary to minimize the amount of data to be transmitted. There are various compression-standards widely used to store and transmit data in efficient manner such as, MPEG-1, MPEG-2 and MPEG-4 standards address the audio, video and speech data effectively. MPEG-4 comprises the features of both standards as well object slicing. In this proposed work we addressed the effectiveness of video compression, Analysis of MPEG-4 block matching algorithms and the CODEC development. The results of MPEG-4 and CODEC achieve high compression ratio, low computational complexity and with good resolution are encouraging.

关键词： Algorithm design and analysis MPEG 4 Standard Codecs video compression Motion estimation video coding Transform coding Computational complexity digital signal processing Bandwidth

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