Jill M. Boyce

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This paper describes extensions to the High Efficiency Video Coding (HEVC) standard that are active areas of current development in the relevant international standardization committees. While the first version of HEVC is sufficient to cover a wide range of applications, needs for enhancing the standard in several ways have been identified, including work(More)
This paper analyzes the distortion in decoded video caused by random packet losses in the underlying transmission network. A recursion model is derived that relates the average channel-induced distortion in successive P-frames. The model is applicable to all video encoders using the block-based motion-compensated prediction framework (including the(More)
1. BSTWCT This paper presents results from a study of stieaming h~EG compressed video over the pubHc Inteme& using the RTP and UDP tianspoti protocok. TmTofie minute video etips were h~EG coded at rates of 384 Kbps and 1 l~ps. The resultant coded streams were transmitted at their respective data ra$esbe~een four sites in the United States and Europa(More)
Packet video will become a significant portion of emerging and future wireless/Internet traffic. However, network congestion and wireless channel error yields tremendous packet loss and degraded video quality. In this paper, we propose a new complete user datagram protocol (CUDP), which utilizes channel error information obtained from the physical and link(More)
Flicker at periodic Intra-coded frames is a commonly seen video coding artifact, especially in low or medium bit rate coding. In this paper, a novel two-pass scheme is proposed to effectively remove I-frame flicker. The scheme involves a first pass of simplified P-frame coding to derive the no-flicker reference of the current frame, which is then taken as(More)
Cerebrospinal fluid (CSF) lactate values were measured in 26 children with meningitis (12 bacterial, 9 aseptic, 5 partially treated) and five children with meningococcaemia without meningitis. A reference range (0.5-3.2 mmol/l) was established from 100 control children. Amounts of lactate were significantly raised in bacterial meningitis (mean 6.5, range(More)