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This paper presents methods for vision-based detection and tracking of vehicles in monocular image sequences of traffic scenes recorded by a stationary camera. The goal of this research is to develop suitable methods for automatic visual traffic surveillance to perform detection, tracking and traffic parameter estimation of multiple vehicles in real time as well as tackle environment illumination...
Generating decision rules is one of the most important data mining areas which ldquorough set data analysis(RSDA)rdquo can address. Generally, for the same expression, the shorter the rules are, the more effectively the system performances. Considering of this, this paper provides a new heuristic algorithm named ldquoshort first extraction (SFE)rdquo based on the classical rough set theory, for rules...
Contourlet has shown good performance in different aspects of image processing. Because of its charming multi-resolution and multi-direction characteristics, Contourlet is especially efficient in the processing of images with abundant texture. In this paper, a texture classification method is presented for the SAR images based on the Contourlet transform and a minimum distance classifier. The interested...
This paper proposes a new computer recognition algorithm which can analyze density uniformity of clothing fabric easily and correctly based on Difference Value Matrix Model (DVMM). Firstly, the clothing fabric image must be pretreated to make it more distinct. Secondly, the clothing fabric image is divided into some segments according to precision demand and a matrix of point??s position is built...
Aiming at the problem that manual grading for garment fabric??s quality has not good precision, this paper presents a new method based on fuzzy set which can evaluate the quality grade of the garment fabric. According to fuzzy theory, we firstly construct a fuzzy matrix from existed fuzzy sets which can evaluate the garment fabric??s quality. According to this matrix, we put forth improved closeness...
When AlGaN is grown on GaN template, crack networks invariably generate when the thickness of the AlGaN layers over GaN exceeds the critical value. We used thin high temperature deposited AlN layer (HT-AlN) as the interlayer between GaN template and AlGaN epilayer which was very effective in eliminating the cracks in AlGaN epilayer. AlGaN layers with high Al mole fractions were also grown. Characterization...
This paper describes the development of an overhead crane simulator system targeted to operator training and examine. The virtual overhead crane model were made by 3DMAX with its real dimensions, and be export as IVE data Format which can be used OSG (OpenSceneGraph) 3D engine to control its inner relative mechanism motion. And distributed Multi-Screen display technique of visual system is used to...
Contourlet has shown its charming performance in image processing. The multi-resolution and multi-direction characteristics ensure the transform a good ability in handling the abundant texture information in natural images. However, the contourlet is not shift-invariant because of the subsampled filter structure. Thus, the contourlet will cause the visual artifact in image denoising applications....
This paper establishes the test models of individual effect and joint effect of the futures price volatility determinants on the basis of GARCH(1,1) model, and takes example for Wheat futures, and analyses empirically the relationship of futures price volatility and time to maturity, of futures price volatility and the day of week, of futures price volatility and volume and open interest. the study...
The distribution and heterogeneity of information raise several challenges for systems to search and retrieve information mutually. One critical foundation for coordinated action in multi-systems is the ability to exchange representational objects that can be locally interpreted in ways that make sense. Coherent local interpretation of shared representations is needed to create global semantic coherence...
The use of ontology for knowledge organization is a common way to solve semantic heterogeneity. But when the categories of the relative concepts of ontologies are different, the semantic interoperation will encounter new obstacles. A new theory model is needed to solve this kind of problem. Information flow (IF) theory seems to be a promising avenue to this end. In this paper, we analyze semantic...
In this paper, to overcome the limitation of the real-time state tracking of PLE, an algorithm is presented that recursively computers the maximum likehood (ML) estimates of a flying object position and velocity. By combining a priori ML estimate of the flying object state vector and its error covariance matrix with bearing measurements, updated estimates are obtained, localization and tracking for...
In an Intelligent Traffic Systems(ITS), queue parameters at the intersections are required in many applications, such as accident monitoring and the controlling of traffic light. In this paper we use morphological edge detection to deal with the traffic image and propose a flexible window method to detect the length of the queue, which adapts to the characteristic and requirement of queue detection...
High-rate analog-to-digital converters (ADC's) are ubiquitous and critical components in advance signal processing, such as software radio and ultra wideband (UWB) radar system. In this paper, we propose an alternative parallel sampling scheme, which is based on random projection, for an ultra- wideband analog to digital conversion. The sampling rate by using proposed scheme can be reduced to 1/m...
The distribution of data and knowledge of a huge amount of cultural heritage and the desire to make them available readily to people, but heterogeneous natural of the databases of distributed digital museums gives rise to the challenge of semantic integration of them. In order to make this difficult task tractable, we describe how to derive ontologies from legacy relational databases and then construct...
Because of the complication of industrial process control, the problem of time-delay becomes more and more serious. Using the idea of prediction, this problem is analyzed in the method of dynamic matrix control (DMC) on the model of subsystems, and the algorithm of time-delay compensation DMC (TDCDMC) is introduced to diminish the affection of it. Since the control signal can not follow the input...
A frequency domain imaging algorithm for the hybrid spaceborne/airborne BSAR is presented. The key point of deriving the algorithm is the analytical evaluation of the system point target response's 2-D spectrum. To overcome the difficulty of resolving analytical solution for the stationary phase point, the spectrum's phase is approximated by two-order Taylor expanding around the point, which is not...
Space resolution expressions presented in terms of satellite parameters for space-air non-cooperative BSAR system are derived considering the effect of Earth rotation and circular Earth surface on spacecraft platform. Based on the expressions, spatial attitude optimization scheme for aircraft platform is given to optimize space resolution once the spacecraft as non-cooperative transmitter is determined...
The paper presents several compression algorithms, which are oriented to the vector Miss distance measurement, and based on short time Fourier transform (STFT), wavelet packet decomposition (WPT), and adaptive local cosine bases (ALCB) respectively. Meanwhile, a generic coefficients classification method based on clustering in time-frequency domain is proposed. And also an adaptive threshold to detect...
A method for designing low delay perfect reconstruction transmultiplexer (PR-TMUX) with coefficients in low dynamical range is presented in this paper. The design of PR-TMUX can be formulated as a factorization, which is based on an improvement of lifting scheme proposed by author for a nearly PR-CMFB. The factorization procedure is described as multi-ramose tree-structure. A heuristic-searching algorithm...
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