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In interactive multiview video streaming (IMVS), a client periodically requests switches to neighboring views for uninterrupted temporal video playback from a server storing a large number of pre-encoded views. The technical challenge is that the navigation path taken by a client is not known at encoding time, and thus it is difficult to employ differential coding to lower code rate without knowing...
The high quality and low delay video streaming is desired for all users. Especially the playback delay is much more undesirable since it is easily perceived by human eyes, and it consists of decoding delay and transfer delay. In this paper we use High Efficiency Video Coding (HEVC) with tiles to achieve parallel encoding/transmission/decoding, and propose to use a novel adaptive tile boundary (ATB)...
To facilitate reliable data transmission over error prone networks, many error correction techniques have been developed to combat data corruption. The reliability requirement of different applications can vary. The multimedia streaming services can usually withstand a certain level of data loss, but they have a strict limitation on the latency tolerance. In this paper, a section-based protection...
The goal of this work is to provide a low complexity video decoding solution for High Efficiency Video Coding (HEVC) streams in applications where only a region of the video frames is needed to be decoded. This paper studies the problem of creating selfcontained (i.e., independently decodable) partitions in the HEVC streams. Further, the requirements for building self-contained regions are described,...
This paper presents a no reference method for efficient detection of dropped video frames in live video streaming. Temporal information of video frames is calculated and is used to detect dropped video frames. The videos are analyzed in binary form instead of true color format RGB in order to reduce the computational time. The proposed method uses two separate thresholds for videos containing high...
The rising demand for media consumption via mobile devices and the emergence of complex video coding algorithms present an additional challenge for the energy management algorithms in resource-constrained consumer electronic devices. Thus, generating energy-optimized video bit streams will positively contribute towards overcoming this challenge. This paper introduces a novel energy model for intra-frame...
Due to high requirements on network capacity during network transmission, video signals have to be compressed. Compression process and network transmission introduce different compression artifacts and packet loss (PL) artifacts in video signals, respectively. These artifacts degrade visual quality of video signal and thus video quality has to be continuously measured and monitored in order to assure...
This paper addresses the problem of robust decoding of 3D video over hybrid broadcast networks, using Multiple Description Coding (MDC). Despite the fact that MDC allows decoding of any description even when the others are lost in the multipath network, the resulting coarsely decoded depth maps produce unacceptable distortion in synthesised views. This is particularly harmful in the case of intra-coded...
Modern video applications on mobile devices use higher resolutions and frame rates in order to offer better visual quality. Therefore, the power consumption reduction of the decoder in the mobile device is more challenging. In this paper, the reference frames selection algorithm of HEVC encoder for power consumption reduction on the decoder side is proposed. In particular, the power consumption of...
The explosive demand for live video streaming over wireless networks is constantly calling for innovations in both video coding and wireless communities. The state-of-the-art answer to this challenge are sliding-window-based Delay-Aware Fountain (DAF) codes, which combine the channel-adaptive feature in rateless coding and the delay-aware feature in video coding. However, a high computational cost...
Today's “connected soldier” is both the source of and destination for electronically transmitted data used by an ever growing range of battlefield information services. In much the same way as the demand for new video services has driven innovation in the consumer domain, the acquisition and dissemination of high resolution Full Motion Video (FMV), either for surveillance and intelligence gathering...
Long Term Evolution (LTE) has been standardized by the 3GPP consortium since 2008 in 3GPP Release 8, with 3GPP Release 12 being the latest iteration of LTE Advanced (LTE-A), which was finalized in March 2015. High Efficiency Video Coding (H.265) has been standardized by MPEG since 2012 and is the Video Compression technology targeted to deliver High-Definition (HD) and Ultra High-Definition (UHD)...
The multi-view video streaming is one of promising technologies for emerging video services. For those applications of multi-view video streaming, video frames of all viewpoints, i.e., cameras, are needed to be transmitted to viewers because the demands of all the viewers' view-switching are unpredictable. However, existing transmission schemes are highly vulnerable to frame loss. Specifically, the...
Selective encryption approaches for efficient multimedia content protection is proposed in wireless multimedia sensor networks (WMSNs) by many authors. Apart from these methodologies, the other important aspect which is discussed in some literatures is the combined optimization of multimedia quality, content protection and energy issues pertaining to communication. However in these joint optimization...
In this paper, we present a cooperative video multicast protocol for densely deployed small cells. We assume that the small cell Base Stations (BS) have overlapping coverages and they are allowed to have interfering transmissions. The proposed cooperative multicast protocol realizes a two-hop transmission system where each hop has its own time slot. In the first hop, the small cell base stations simultaneously...
This paper presents a method for efficient compression of high dynamic range (HDR) and wide color gamut (WCG) video data. The proposed solution consists of two major elements: a conventional video codec (e.g., HEVC) and pre-and post-processing steps applied prior to encoding and after decoding process, respectively. The proposed HDR/WCG video coding system can be configured to provide two configurations:...
Due to recent demand for playback of high quality video on mobile devices, there is the need for a scalable, error resilient framework with the ability to adjust to the network and receiver's specification. To cope with the bandwidth fluctuations in the network, the framework's scalability allows for high bit-rate video to be transcoded to a low bit-rate format while preserving quality as much as...
An efficient framework of distributed compressive video coding using Enhanced side information for WSN is proposed. At the encoder, the incoming video frames are split into key frames and Wiener-Ziv (WZ) frames depending on Group of Picture (GOP). Based on Distributed Video Coding (DVC) these frames are processed independently and transmitted over WSN. Generally the WZ frames are encoded at a lower...
Paper describes method that use intentional downsampling of the video sequence as part of the pre-processing step before being compressed, and the application of SR techniques as a post-processing of the compressed sequence. This scheme can be utilized as a bitrate control mechanism to optimize the overall quality of the high resolution (HR) reconstructed video. The main difference between the conventional...
Many popular video coding standards such as VPx, H.26x achieve video compression by using spatial and temporal dependencies in the source video signal. This makes the encoded bitstream vulnerable to errors during transmission. In this paper, we investigate an error resilient video coding for the VPx bitstreams using error resilience packets. An error resilient packet consists of encoded keyframe contents...
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