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The traditional Lagrange RDO algorithm assumes the transformed residues as memory less random variables, and then doesn't perform well when the prediction residues posses strong temporal correlations. We extend the RDO by modeling the residues as the first order Markov source and calibrating the distortion model with the piecewise approximation function. Comprehensive experimental results testify...
Rate distortion optimization (RDO) algorithm plays the vital role in the up to date hybrid video codec H.264/AVC. The RDO algorithm of H.264/AVC reference software is built up by assuming that the transformed residues are memoryless variables. However, our experiments reveal that, for some sequences, the strong temporal correlations exist in the prediction residues. This paper extends the Lagrangian...
Householder bidiagonalization is the first step of Singular Value Decomposition (SVD) - an important algorithm in numerical linear algebra that is widely used in video processing. NEON is a general-purpose Single Instruction Multiple Data (SIMD) engine introduced in ARMv7 architecture, which is targeted to accelerate multimedia and signal processing on mobile platforms. In this paper, we propose a...
Scalability is an important metric which is used to evaluate the scalability of the cluster system. Although, there have been a lot of scalability metrics, the research of scalability of the cluster system is very few. Common scalability evaluation methods are usually used to analyze the scalability of the algorithm. They can also be used to analyze the scalability of the cluster. These methods are...
The information contained in the successful test case has been fully tapped by metamorphic testing which can effectively solve the oracle problem of software testing. One of the key factors affecting the results of the metamorphic testing is the generation of test cases. In this paper, we propose a criterion called ECCEM (Equivalence-Class Coverage for Every Metamorphic Relation), which covers the...
As an extension of AVC, SVC provides the ability to adapt to heterogeneous environments. However, transcoding between SVC and AVC becomes necessary due to the existence of legacy AVC-based systems. This paper proposes a low-complexity SVC-to-AVC CGS transcoder in the pixel domain, which achieves approximately the same coding efficiency as the full re-encoding method. The output AVC bitstream modes...
Recently sparse coding has received expressions of interest in the field of pattern recognition. Most existing methods take the data-as-vector formulation, and deal with images (the second order tensor) or volumes (the third order tensor) by vectorization. However, such kind of vectorization will lose the original structure of the data and reduce the reliability of post processing, leading a poor...
This paper studies the quality management method in small-size software project. In traditional method, test and evaluation are prerequisite methods to improve the project quality. The paper analyses characteristics and the disadvantages of project management in small-sized software project. Therefore, some quality activities should be considered in small-sized software project. The paper proposed...
Wavelet shrinkage is an image denoising technique based on the concept of thresholding the wavelet coefficients. The key challenge of wavelet shrinkage is to find an appropriate threshold value, which is typically controlled by the signal variance. To tackle this challenge, a new image shrinkage approach is proposed in this paper by using a variance field diffusion, which can provide more accurate...
This paper addresses the super-resolution image reconstruction problem with the aim to produce a higher-resolution image based on its low-resolution counterparts. The proposed approach adaptively adjusts the degree of regularization using the saliency measure of the local content of the image. This is in contrast to that a spatially-invariant regularization is used for the whole image in conventional...
Asymmetric stereoscopic imaging technique utilizes a pair of lower-resolution and full-resolution images to reduce the data storage requirement of stereoscopic images and videos, while maintaining fairly good quality in 3D perception. This paper proposes a super-resolution approach to reconstruct the original full-resolution image for this asymmetric stereoscopic system setup. The proposed approach...
Context-based Adaptive Binary Arithmetic Coder (CABAC) is the advanced entropy coding tool employed by main and higher profiles of H.264/AVC. As compared with Context-based Adaptive Variable Length Coding (CAVLC), under the same bit rate, CABAC achieves up to 0.5dB PSNR gain. On the other hand, the high complexity of CABAC severely hinders the whole encoder throughput. To overcome the throughput bottleneck...
The sustained effects of acupuncture have been widely applied to clinical treatment, thus it can be assumed that the relatively functional specificity of acupoints may evolve as the function of time. In this study, we originally combined ICA and multivariate Granger causality analysis to explore the causal interactions within and among the post-acupuncture resting-state networks (RSNs) at a hearing-related...
Acupoint specificity, lying at the core of the Traditional Chinese Medicine, still faces many controversies. As previous neuroimaging studies on acupuncture mainly adopted relatively low time-resolution functional magnetic resonance imaging (fMRI) technology and inappropriate block-designed experimental paradigm due to sustained effect, in the current study, we employed a single block-designed paradigm...
The number of the bar breaking increases gradually, if we can not detect the bar breaking immediately. It may lead to accidents, and also cause great economic losses when the squirrel cage asynchronous motors have a rotor bar breaking fault. Therefore it is helpful to scence organization, arranging maintenance and avoiding the shutdown if we have early detection for the bar breaking. This article...
Combat mission of battle plane is usually executed by plane fleet as a unit. Plane fleet can be divided into several team formations. Battle planes in different formations have different flight profiles, and cooperate with each other. The load conditions varied under different flight profiles. According to the influence of load conditions on battle plane's reliability, the flight profile conversion...
This study applies cluster analysis K-means method to analyze the data of regional product by Three Strata of Industry in China. Firstly, we give a review of K-means method, according to self-organizing feature maps we determine the number of clusters, and then employ the K-means method to find the clusters. From the cluster analysis we get four clusters and conclude that the membership in Cluster...
The scaling of MOSFETs has improved performance and lowered the cost per function of CMOS integrated circuits and systems over the last 40 years, but devices are subject to increasing amounts of statistical variability within the deca-nano domain. The causes of these statistical variations and their effects on device performance have been extensively studied, but there have been few systematic studies...
ASP outsourcing is one promising business activity and efforts have been done to investigate the critical factors which improve clients' satisfaction level in developed countries. However, no efforts have been made to investigate the contributing role of functional capability of ASP to the increase of clients' satisfaction in China, one of the biggest SMEs market to develop ASP business. The results...
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