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Life cycle management is an effective way to maintain software quality in safety-critical systems; however, it faces difficulties when applied on software of Programmable Logic Device (PLD). This is because: (1) traditional models on software development do not fit with design workflow of PLD; (2) adaptive models for PLD focus mainly on specific features during software implementation, ignoring high-level...
YCbCr color space is widely used in previous video coding standards such as H.264 and the latest video coding standard HEVC. Although the conversion from RGB to YCbCr reduces the inter-channel redundancy significantly, there are still some correlations among Y, Cb and Cr. In order to reduce the inter-channel redundancy, LM mode was proposed based on HEVC in which the reconstructed luma component is...
In the latest HEVC video coding standard, angular intra prediction (AIP) applies 35 modes including 33 angular modes which can handle blocks with direction information well, and other 2 modes (DC and planar) which are used to predict smooth blocks. However, for blocks with complex texture, these modes may not give good predictions. Some complex blocks can be predicted well by template matching prediction...
In Internet of Things (IoT), both physical things (such as devices, gateways and commodities etc.) and virtual things (like multimedia content and application software) are assigned unique IoT identifiers (IoT ID), which are similar to the domain name used for locating online resources in Internet. However, until now the format of IoT ID is not globally unified due to all kinds of reasons and thus...
The multicast rate of satellite communication networks (SCN) can be maximized by using randomized network coding (RNC). To optimize the RNC-based multicast for SCN, the number of coding links should be minimized to reduce the computational complexity on satellite, while the dynamic topology needs to be considered. To this end, in this paper, we propose an improved genetic algorithm (IGA) to minimize...
Video plus the corresponding depth maps is now the most popular data format for 3D video coding, as it is convenient to synthesize an arbitrary intermediate virtual view without the need to display the depth map for end users. How to compress the depth map efficiently is one of the key problems in 3DVC. In this paper we propose a new distortion model for depth map coding by considering the view synthesis...
In this paper, network coding is used to improve the wireless unicast performance. We consider a wireless switching network model with erasure channel, where M nodes exchange their packets via relay node. The sender transmits packets to the receiver via relay node independently. The relay node combines packets transmitted to the same receiver from different source nodes to save bandwidth. This paper...
Modification of histone proteins is associated with chromatin accessibility which profound epigenetic effect on DNA transcription, repair and replication. The SET domain proteins are recognized as regulating gene expression through lysine residues of histione methylation. Previous reports classified the SET domain proteins for 5 classes and 19 groups. In this study, we identified 15 barley SET domain...
As a significant perceptual audio coding standard, AC-3 has been widely applied in such areas as DTV and etc. The bit allocation module in AC-3 encoder plays a decisive role to the quality of the whole audio encoder. In this paper, based on the quantitative analysis of the SNRoffset, the theory deduction is provided, and formula to estimate the relation between the volume of bit allocation and the...
In order to save the consumption in terms of instruction and storage, to simplify the code, and to enhance the coding quality, this paper, based on the architecture design of the stereo encoder, has analyzed the arranging relationship between the channel and the block in each frame and has optimized the data process and the looping mode of the current encoder. In addition, the start points and the...
Amino acids (AAs) pairs in protein sheets structures have turned out to be important in studying protein tertiary structures and protein folding pathways. Most existing software tools are sophisticated in visualizing and manipulating protein 3-D structures. However, these tools are inconvenient to retrieve strands alignment information and are not so intuitive to illustrate the AAs pairs on strands...
Physical-layer network coding (PLNC) is a novel wireless communication technology, in which multiple transmitters can send signals on the same channel to the same receiver at the same time. Our previous studies have revealed that PLNC can substantially improve the throughput performance of the whole network. In this paper, we address the security performance of PLNC. In particular, we investigate...
In this paper, we address the topology control issue for future wireless mesh networks (WMNs). In particular, we propose a novel topology control scheme that attempts to maximize the overall throughput in the network with random unicast traffic demands. The main idea of the scheme is to establish multiple semi-permanent wireless highways, each of which can convey the traffic for nodes along the highways...
The Audio and Video Coding Standard of China (AVS) uses multi-resolution analysis of frequency domain (MRAFD) to control pre-echo when coding transient signal. However, this technology complicates the implementation of encoder as well as decoders with more operation and higher computational precision. In this paper, a kind of gain control of time domain is used to encode transient signal instead of...
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