Results 1 -
7 of
7
A survey of H.264 AVC/SVC encryption
- IEEE Trans. on Circuits and Systems for Video Technology
, 2012
"... Abstract—Video encryption has been heavily researched in the recent years. This survey summarizes the latest research results on video encryption with a special focus on applicability and on the most widely-deployed video format H.264 including its scalable extension SVC. The survey intends to give ..."
Abstract
-
Cited by 11 (2 self)
- Add to MetaCart
(Show Context)
Abstract—Video encryption has been heavily researched in the recent years. This survey summarizes the latest research results on video encryption with a special focus on applicability and on the most widely-deployed video format H.264 including its scalable extension SVC. The survey intends to give researchers and practitioners an analytic and critical overview of the state-of-the-art of video encryption narrowed down to its joint application with the H.264 standard suite and associated protocols (packag-ing / streaming) and processes (transcoding / watermarking). I.
Efficient In-Network Adaptation of Encrypted H.264/SVC Content
, 2009
"... This paper addresses the efficient adaptation of encrypted scalable video content (H.264/SVC). RTP-based in-network adaptation schemes on a media aware network element (MANE) in an IPTV and VoD scenario are considered. Two basic alternatives to implement encryption and adaptation of H.264/SVC conten ..."
Abstract
-
Cited by 10 (5 self)
- Add to MetaCart
(Show Context)
This paper addresses the efficient adaptation of encrypted scalable video content (H.264/SVC). RTP-based in-network adaptation schemes on a media aware network element (MANE) in an IPTV and VoD scenario are considered. Two basic alternatives to implement encryption and adaptation of H.264/SVC content are investigated: (i) full, format-independent encryption making use of Secure RTP (SRTP); (ii) SVC-specific encryption that leaves the metadata relevant for adaptation (NAL unit headers) unencrypted. The SRTP-based scheme (i) is straightforward to deploy, but requires the MANE to be in the security context of the delivery, i.e., to be a trusted node. For adaptation, the content needs to be decrypted, scaled, and re-encrypted. The SVC-specific approach (ii) enables both full and selective encryption, e.g., of the base layer only. SVC-specific encryption is based on own previous work, which is substantially extended and detailed in this paper. The adaptation MANE can now be an untrusted node; adaptation becomes a low-complexity process, avoiding full decryption and re-encryption of the content. This paper presents the first experimental comparison of these two approaches and evaluates whether multimedia-specific encryption can lead to performance and application benefits. Potential security threats and security properties of the two approaches in the IPTV and VoD scenario are elementarily analyzed. In terms of runtime performance on the MANE our SVC-specific encryption scheme significantly outperforms the SRTP-based approach. SVC-specific encryption is also superior in terms of induced end-to-end delays. The performance can even be improved by selective application of the SVC-specific encryption scheme. The results indicate that efficient adaptation of SVC-encrypted content on low-end, untrusted network devices is feasible.
A Survey on JPEG2000 Encryption
, 2009
"... Image and video encryption has become a widely discussed topic; especially for the fully featured JPEG2000 compression standard numerous approaches have been proposed. A comprehensive survey of state-of-the-art JPEG2000 encryption is given. JPEG2000 encryption schemes are assessed in terms of secur ..."
Abstract
-
Cited by 5 (4 self)
- Add to MetaCart
Image and video encryption has become a widely discussed topic; especially for the fully featured JPEG2000 compression standard numerous approaches have been proposed. A comprehensive survey of state-of-the-art JPEG2000 encryption is given. JPEG2000 encryption schemes are assessed in terms of security, runtime and compression performance and their suitability for a wide range of application scenarios.
Format-compliant Encryption of H.264/AVC and SVC
, 2008
"... An encryption approach for H.264/AVC and SVC is proposed. Although the bitstream (format stream) is encrypted with state-of-the-art symmetric ciphers, H.264/AVC and SVC compliance is preserved. Standard compliant encoder/decoder and conventional symmetric ciphers, e.g., in specialized hardware, can ..."
Abstract
-
Cited by 5 (3 self)
- Add to MetaCart
An encryption approach for H.264/AVC and SVC is proposed. Although the bitstream (format stream) is encrypted with state-of-the-art symmetric ciphers, H.264/AVC and SVC compliance is preserved. Standard compliant encoder/decoder and conventional symmetric ciphers, e.g., in specialized hardware, can still be employed – a significant advantage compared to previous work. The approach is suitable for a wide range of application scenarios.
Digital Watermark Detection in Visual Multimedia Content
, 2010
"... Digital watermarking has been proposed as a technology to ensure copyright protection by embedding an imperceptible, yet detectable signal in visual multimedia content such as images or video. Watermark detection is an integral component of a watermarking system. This cumulative thesis addresses wat ..."
Abstract
-
Cited by 1 (0 self)
- Add to MetaCart
(Show Context)
Digital watermarking has been proposed as a technology to ensure copyright protection by embedding an imperceptible, yet detectable signal in visual multimedia content such as images or video. Watermark detection is an integral component of a watermarking system. This cumulative thesis addresses watermark detection problems in important application domains such as scalable multimedia, raw/demosaicked digital camera images, and 2D vector graphics with a distortion constraint. Generally, we rely on spread-spectrum watermark embedding and aim to improve performance of the system on the receiving side by taking into account peculiarities of the embedding domain and host signal modelling. A watermarked, scalable multimedia bitstream can be decoded in several quality and resolution layers to meet the demand of different devices. The watermark should be detectable in each layer, with increased detection performance in higher layers, yet without impairing the coding efficiency. We investigate watermarking of scalable JPEG2000, H.264/SVC and MZ-EZBC bit streams. A system for watermarking the raw image sensor data is constrained by the processing resources of the camera. We implement a spatial-domain embedding in camera firmware and
Secure Scalable Video Compression for GVid
"... Abstract. GVid is a Grid service that enables the secure and transparent integration and development of graphical user interface applications in the Grid. It separates the potentially computationally complex task of data creation and visualization, e.g., scientific simulations, from the comparably c ..."
Abstract
- Add to MetaCart
(Show Context)
Abstract. GVid is a Grid service that enables the secure and transparent integration and development of graphical user interface applications in the Grid. It separates the potentially computationally complex task of data creation and visualization, e.g., scientific simulations, from the comparably computationally inexpensive task of transmission and display of the visual data. A Grid application produces visual data and GVid takes care of the encoding, the secure and efficient transmission and the display of the visual data. As the transmission parameters and grid node properties are highly variable, special compression schemes have to be chosen to cope with these requirements. Beneficial for such requirements is the application of scalable compression formats, such as H.264/SVC (Scalable Video Coding) and MC-EZBC (Motion-Compensated Embedded Zerotree Block Coding). As simulation data may be sensitive, e.g., in the case of medical simulations, the secure transmission and storage of the visual data has to be guaranteed. Format-specific encryption schemes offer improved functionality due to the preservation of scalability in the encrypted domain. In this work the compression performance of state-of-the-art scalable video compression systems is evaluated and format-specific encryption schemes are proposed and discussed. 1.
1 Secure Scalable Video Compression for GVid
"... Abstract. GVid is a Grid service that enables the secure and transparent integration and develop-ment of graphical user interface applications in the Grid. It separates the potentially computation-ally complex task of data creation and visualization, e.g., scientific simulations, from the comparably ..."
Abstract
- Add to MetaCart
(Show Context)
Abstract. GVid is a Grid service that enables the secure and transparent integration and develop-ment of graphical user interface applications in the Grid. It separates the potentially computation-ally complex task of data creation and visualization, e.g., scientific simulations, from the comparably computationally inexpensive task of transmission and display of the visual data. A Grid application produces visual data and GVid takes care of the encoding, the secure and efficient transmission and the display of the visual data. As the transmission parameters and grid node properties are highly variable, special compression schemes have to be chosen to cope with these requirements. Benefi-cial for such requirements is the application of scalable compression formats, such as H.264/SVC (Scalable Video Coding) and MC-EZBC (Motion-Compensated Embedded Zerotree Block Coding). As simulation data may be sensitive, e.g., in the case of medical simulations, the secure transmis-sion and storage of the visual data has to be guaranteed. Format-specific encryption schemes offer improved functionality due to the preservation of scalability in the encrypted domain. In this work the compression performance of state-of-the-art scalable video compression systems is evaluated and format-specific encryption schemes are proposed and discussed. 1.
