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With the rapid development of network, more and more people share and comment on the web to express their mends. How to predict the popularity of topic happening recently is a hot topic and lots of people are trying to find out the law of information diffusion hidden in it. However, many models assume that information spreads with no external interference in social networks. The research on competitive...
Among various sparse array techniques, co-prime array is found to be more attractive because its higher DoF with a smaller number of sensing elements. However, because of its specific physical non-uniform linear structure, it would be inconvenient and costly to implement in the presence of varying detection scenarios. In this paper, we propose to exploit the current ULA to dynamically formulate a...
In this paper, a novel method using conformal technique of finite-difference method (FDM) is proposed to solve the distributed capacitance for microstrip lines. Instead of deriving the average dielectric constant ε, this method uses electric field numerical weights to process the inhomogeneous cells, and takes the discontinuous effects of both inhomogeneous Ampere cell and Faraday cell into account...
The establishment of traditional cable bundle crosstalk model is based on the intra-system common mode source, without considering the crosstalk of cable bundles between different systems, and the cables are encouraged by differential-mode source. In this paper, a new differential-mode source cable bundle crosstalk method is proposed, which establishing a new three conductor transmission lines parasitic...
Since the inductance parameter of nonuniform transmission line in anisotropic dielectric is difficult to extract and the tensor dielectric permittivity is hard to solve, a novel method is proposed in this paper to solve this problem. It uses filament division to establish the dispersion model of nonuniform transmission line, and develops the Ampere loop integral dyadic equations and closed circuit...
In recently years, fast growing wireless communication systems have encouraged the need for dual-band, multiband and UWB antennas. These systems include Bluetooth which operates at the band 2.4 GHz and WiLAN which operates at 3.5 GHz. Using several radiating patches and reactive load to obtain dual-band or multiband usually increase the difficulty and cost of production. The resulting broadband microstrip...
Data integration and sharing has been an important part of city data warehouse establishment and application integration. It can let more people use existing data resources more fully, reducing duplication work on data collection and corresponding costs. Smart City needs to establish an underlying data exchange platform to contact the entire systems, applications, data sources, etc. So that Smart...
This paper proposes a novel approach to part-based tracking by replacing local matching of an appearance model by direct prediction of the displacement between local image patches and part locations. We propose to use cascaded regression with incremental learning to track generic objects without any prior knowledge of an object's structure or appearance. We exploit the spatial constraints between...
Among various sparse-array techniques, co-prime array is found to be more attractive because of its high efficiency and simplicity. In this paper, we propose a scheme that can exploit both sum and difference co-arrays to form a larger size of continuous virtual array while keeping the conventional co-prime array configuration. Compared to the method that needs to extend the sensor array size to ensure...
Eye orientation contains abundance of significant information for estimating user's intention and purpose. Large number of research on gaze direction has been given and improved in statistics, biometrics, organizational behavior, etc. Details of gaze methods are essential conditions for human-computer interactive control, human intention prediction, expression analysis, cognitive state analysis, etc...
Fast detecting communities is challenging in large-scale real-world social networks and an important task in many scientific domains, such as Complex Networks and Social Network Analysis. In this paper, we propose a Hybrid Label Propagation Algorithm (HLPA) for finding communities on large-scale real-world social networks. And we conduct our experiments on real-world social networks datasets and get...
A high-definition digital color image watermark algorithm based on QR code and DWT is studied in this paper. The basic concept, theoretical framework and the application domain of the digital watermark algorithm is introduced. From the simulation results, this algorithm can achieve better universality, and can be applied to most of the color images. Watermarked digital works can achieved better quality,...
There are a lot of recent research interests on MIMO radars. Transmitting orthogonal waveforms, the extra degrees of freedom (DoFs) provided by MIMO radar can increase the detection and estimation performance. Besides, the recent work on nested array and co-prime array also bring encouraging results. But whether these two ideas can be employed together remains an open problem. In this work, we investigate...
This paper designs a fiber optic liquid-level sensor is used to measure the level of oil tank, introduces design, development process of the sensor and use this sensor to do experiment to verify the correctness of theory of the sensor. This sensor consists of two section of the same fiber optical and elastic diaphragm. The sensor's development uses the principle of coupling loss between optical fibers,...
Image enhancement is an important image processing technique that processes images suitably for a specific application e.g. image editing. The conventional solutions of image enhancement are grouped into two categories which are spatial domain processing method and transform domain processing method such as contrast manipulation, histogram equalization, homomorphic filtering. This paper proposes a...
Using OpenCV, a lane recognition system is designed. In this study, a lightweight approach is proposed to real-time detection of lanes using ROI (region of interest) based on priority setting. The traditional ROI is further divided into two regions of different priorities. The left line of the lane, detected in the left region, is given a higher priority. And it can deduce the other line of the Lane...
An improved image enhancement algorithm based on genetic algorithm has been presented and applied for transmission line image processing in this paper, in which fuzziness is served as the optimization method of the image enhancement procedure. Because the complexity and uncertainty of the image itself, fuzzy theory has been used in the image processing. In this process, the parameters of the transformation...
This paper advanced a kind of video object segmentation arithmetic. This arithmetic first segmented the video reference frame by Graph cuts with user interactive behaviors, got accurate object contour. Then, it calculated shape confidence with geodesic distance, and combined color model with shape model adaptively. Finally, it constructed Graph energy function, and segments with Graph Cuts. This arithmetic...
This study is designed to achieve a technology of extracting moving target within local windows based on GrabCut. After user cut out the moving target in the first frame, our system then covered a series of local windows over the contour of the target totally. Then our system used sparse optical flow algorithm and dense optical flow algorithm respectively to track the moving target and moved the local...
GrabCut is a classical efficient algorithm used in image segmentation. In this paper we provide an approach of video segmentation—an algorithm which is called “GrabCut in local window algorithm” based on GrabCut algorithm. First, make cutout with GrabCut in series of overlap local windows and get corresponding local contour boundaries. Then the contour boundaries in local windows are linked to get...
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