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Rate-Distortion optimization is updated to improve HEVC coding performance for HDR content. The proposed method employs Perceptually Uniform encoding as a distortion measure and shows on average performance improvement of 1.06% for HDR-VDP-2.2 Q factor and 4.02% in HDR-VQM with respect to the reference encoder. Further, with proposed change, better bit budget estimation is achieved showing performance...
Although High Dynamic Range (HDR) content can provide an enhanced immersive experience for end-users, the impact of channel errors on its perception is unclear due to the lack of a standardized HDR video distribution framework. This paper presents an assessment of the robustness of the two main HDR video distribution architectures, the single-layer 10-bit scheme and the two-layer 8-bit backward-compatible...
Three main approaches exist to solve the optimization problem described in the paper; linear programming methods, greedy resource allocation methods and heuristic methods.
Emerging internet based social and interactive video applications are expected to replace the traditional TV broadcasting concept. However, dynamic network conditions together with varying user expectations, pose many challenges for resource allocation in such applications. This paper proposes a heuristic solution to the problem, where the energy incurred by the applications is minimized while simultaneously...
This paper proposes an error resilience framework that can be devised to compress HDR (High Dynamic Range) video content using HEVC (High Efficiency Video Coding) codec. The proposed method predicts the most robust motion vectors, coding modes and decoder concealment methods under erroneous environments considering the Perceptually Uniform (PU) domain quality impact. Results show that an average of...
Error concealment techniques such as motion copying require significant changes to HEVC (High Efficiency Video Coding) motion estimation process when incorporated in error resilience frameworks. This paper demonstrates a novel motion estimation mechanism incorporating the concealment impact from future coding frames to achieve an average 0.73 dB gain over the state-of-the-art.
Though ubiquitous, the full potential of consumer electronic devices in the home, as content creators, remains underutilized due to the limited interaction between the consumers and the existing on-demand application and media services. Although services such as interactive television could change this, the geographic distribution of groups of consumers and the need for on-the-fly media processing...
Social interaction of groups of users, amongst themselves and with the media content itself, is increasingly becoming popular due to the advancements in the Internet access technologies. However, multimedia resource provisioning for dispersed user groups poses a challenge and demands innovative technologies. This paper proposes a novel approach based on Particle Swarm Optimization (PSO) to optimally...
Personalized interactive television broadcasting requires real-time audiovisual processing at levels impractical in end-user equipment. However, guaranteeing Quality of Service (QoS) also remains a challenge for cloud-based solutions. This paper proposes a group QoS optimization approach to the problem that demonstrates significant improvements in the number of users being served.
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