Rate-Distortion Optimized Streaming of Authenticated Video

Abstract

Stream authentication methods usually impose overhead and dependency among packets. The straightforward application of state-of-the-art rate-distortion (R-D) optimized streaming techniques produce highly sub-optimal R-D performance for authenticated video, since they do not account for the additional dependencies. This paper proposes an R-D optimized streaming technique for authenticated video, by accounting for authentication dependencies and overhead. It schedules packet transmission based on packets' importance in terms of both video quality and authentication dependencies. The proposed technique works with any stream authentication method as long as the verification probability can be quantitatively computed from packet loss probability. Simulation results based on H.264 JM 10.1 and NS-2 demonstrate that the proposed authentication-aware R-D optimized streaming technique substantially outperforms authenticationunaware R-D optimized streaming techniques. In particular, when the channel capacity is below the source rate, the PSNR of authenticated video quickly drops to unacceptable levels using conventional R-D optimized streaming techniques, while the proposed technique still maintains R-D optimized video quality.

Rate-Distortion-Authentication Optimized Streaming with Multiple Deadlines

“…A packet received after its deadline will be not used for display. In [8], we proposed an R-D-A optimized framework for streaming of authenticated video over a lossy network, which extends the RaDiO framework to incorporate another dimension for authentication. In addition to the original parameters considered in [6], the R-D-A optimized technique accounts for the authentication dependency and overhead size 0.…”

“…The main high-level differences between RaDiO [6] and R-D-A optimized framework [8] are briefly summarized. First R-D-A is an extension of RaDiO designed for streaming of authenticated video where a packet received but not verified is not decoded or used for display.…”

“…Therefore, the application of conventional Rate-Distortion Optimized (RaDiO) [6] streaming technique, which do not account for the overhead and dependencies introducted by authentication, produce highly sub-optimal R-D performance for authenticated video. To tackle this problem, Rate-Distortion-Authentication (R-D-A) optimized streaming technique for authenticated video are proposed [8]. The R-D-A optimization is defined as the rate-distortion optimization for authenticated video, where the distortion is measured by the difference between the original video and the authenticated video, and the rate includes the rate used for both the coded video data and the authentication data.…”

“…The R-D-A optimization technique in [8] assumes each packet is associated with only one deadline, i.e., its display deadline, after which the packet will not be considered for transmission. However, using graph-based authentication, when a packet misses its display deadline, it might still be useful for verification of other packets which depend on it for authentication.…”

Energy-Distortion-Authentication Optimized Resource Allocation for Secure Wireless Image Streaming

“…In that approach, authentication graph is designed to trade off authentication bit budget overhead and authenticated media quality given specific packet loss ratio. In [3] a rate-distortion optimized authentication framework for H.264 video authentication and transmission is proposed. The end to end distortion of authenticated video packets is minimized based on each packet's visual importance and additional authentication dependency.…”