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Accurate hand-eye calibration is a very significant task in robotics. Many algorithms focus on L optimization, and Least Square Estimation (LSE) is usually employed to deal with this problem. For the reason that LSE can only be applied to occasions that errors obey normal distribution, LSE can lead to a lower precision of calibration result when gross errors occur. Different from the existing approaches,...
The relation between Chinese GDP and defense expenditure is investigated based on the data from 1978 to 2015, which is divided into four stages according to national defense development strategy evolution and defense spending growth rate. The results revealed that the absolute degree of grey incidence between defense expenditure and GDP is relatively small, illustrating defense expenditure exerts...
This paper first introduce the general method of Deformable Part Model(DPM). In order to improve the speed of front vehicle detection, first, this paper propose a method to accelerate the calculation speed of HOG feature. Second,based on a series of important accelerating mechanisms, this paper mainly use Vector Quantization and K-means clustering algorithm to speed up the HOG feature computing speed,...
Gratings tiling refers to assembling serial small-sized sub-gratings, to make them into a single integral large aperture grating by means of mechanical process, which is mainly used for pulse compression in the high-energy laser system. In order to ensure that the parallelism and coplanarity between the sub-gratings meet high requirements of submicron level, the grating tiling device itself needs...
Many physical problems can be modelled with the max-plus linear system and some results have been obtained. In this paper, first we will give some results and properties about intervals and present the definition and operations of interval matrices, then we will put forward the control problem for max-plus linear systems in interval dioid, in which the state respects the given constraints (i.e. inequality...
Cumulants matching method for seismic wavelet extraction is ultimately a multi-parameters, multi-extremes nonlinear functional optimization process. in this paper, a novel improved PSO algorithm (Adaptive Chaotic Embedded Particle Swarm Optimization, ACEPSO) has been proposed to be applied in wavelet parameters estimation. ACEPSO embeds chaotic variables in standard particle swarm optimization algorithm,...
In this paper, we study adaptive control design problem of piecewise-linear systems with matching parametric uncertainties. The basic idea is to construct a piecewise control law and a piecewise parameter adaptation law in such a way that a piecewise quadric Lyapunov function can be used to establish the global stability. All of the synthesis conditions are formulated as Linear Matrix Inequities and...
In this paper, from the world Expo economic principle and Shanghai Expo visitor data in different periods, the gray prediction model and demand model are established respectively. Considering the ratio of total income to total investment and the number of participating countries, organizations and visitors, the AHP model is obtained to evaluate the influence of recent several Expos. According to these...
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