Format-compliant perceptual video encryption based on multiple description coding

Abstract

This paper proposes a new format-compliant perceptual encryption scheme based on the Multiple Description Coding (MDC). The proposed technique exploits the scalable property of MDC which results in multiple encrypted formatcompliance video streams. An unbalanced MDC was specially designed to serve the purpose of perceptual encryption in such a way that it provides the control over quality differences and number of achievable qualities. In general, the perceived quality is directly proportional to the number of video descriptions that can be correctly decrypted. In order to preserve format compliant property of the encoded video streams, the proposed scheme was designed based on a pre-and post-processing multiple description video coding method and an encryption process at bit stream level. Hence, no alterations are required for both coding and encryption processes. Even though the proposed framework is format independent, this paper focuses on the H.264/AVC video coding standard. The experimental results demonstrate that the proposed scheme can successfully integrate encryption and a multiple description coding technique while preserving other multiple description video coding characteristics such as scalability and robustness.

Multimedia Data Secure Transmission: A Review

“…which incorporates random sign-flips into the DCT's implementation structure at later phases. [53], Multiple Description Coding (MDC) is employed to offer a format-compliant perceptual encryption technique. The suggested method takes advantage of the MDC's scalable characteristic.…”

Fast Video Encryption Using the H.264 Error Propagation Property for Smart Mobile Devices

“…In an I-frame, intra-coding is permitted and all previously decoded reference pictures will not be used in the further decoding process. Many video compression methods have used lossy techniques to remove spatial and temporal redundancy [ 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 ], and typically consist of the intra- and inter-mode. In these modes, a current macroblock refers to the previous macroblock and pixels.…”

“…In transmitting video data over Video Sensor Networks (VSNs), the video data can be sent to and from portable devices such as smartphones [ 1 , 2 , 3 , 4 , 5 ]. Frequently, multimedia data delivery raises issues around content ownership and privacy; therefore, protecting content is important in multimedia applications [ 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 ]. Since the size of multimedia data is large, efficient encryption methods for protecting content, while also satisfying real-time requirements, are necessary [ 3 , 4 , 5 ].…”