摘要
Security video communication is a challenging task,especially for wireless video applications.An efficient security multimedia system on embedded platform is designed.By analyzing the hardware architecture and resource,the efficient DSP-based H.264/AVC coding is studied by efficient video coding techniques and system optimizing implementation.To protect the confidentiality and integrity of media information,a novel security mechanism is presented,which includes user identify authentication and a perceptual video encryption algorithm based on exploiting the special feature of entropy coding in H.264.Experimental results show that the proposed hardware framework has high performance and achieves a better balance between security and efficiency.The proposed security mechanism can achieve high security and low complexity cost,and has a little effect on the compression ratio and transmission bandwidth.What’s more,encoding and encryption at the same time,the performance of data process can meet real-time application.
Security video communication is a challenging task, especially for wireless video applications, An efficient security multimedia system on embedded platform is designed. By analyzing the hardware architecture and resource, the efficient DSP-based H.264/AVC coding is studied by efficient video coding techniques and system optimizing implementation. To protect the confidentiality and integrity of media information, a novel security mechanism is presented, which includes user identify authentication and a perceptual video encryption algorithm based on exploiting the special feature of entropy coding in H.264. Experimental results show that the proposed hardware framework has high performance and achieves a better balance between security and efficiency. The proposed security mechanism can achieve high security and low complexity cost, and has a little effect on the compression ratio and transmission bandwidth. What＇s more, encoding and encryption at the same time, the performance of data process can meet real-time application.
基金
supported by the Project (No.2005CB321902) of Major State Basic Research Development (973)
Project (No.yzdj0705) of Information Security Key Laboratory of the General Office of CPC Central Committee of China
作者简介
WANG lifeng received the master degree in School of Computer Science and Technology from Bei Hang University, China in 2006. She is a Ph.D. candidate in Beijing University of Posts and Telecommunications. She is a lecturer of Department of Electronic and Information Engineering in Beijing Electronic Science and Technology Institute. Her current research interests include information security （mainly image and video encryption）, signal processing, and secure human computer identification.
