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A method is proposed to recognize realtime ping-pong player’s action in Microsoft Kinect Sensor environment. A model containing three angles is established to represent ping-pong arm action features through skeletal data. Constructing an equalratio filter to calculate the likelihood probabilities for every action type in every skeletal frame data. The filter considers most poses and employs a coefficient...
In present paper, the linear regression, Gaussian process regression and support vector machines regression, k-nearest neighbor algorithm were used to predict the photocatalytic reaction rate constant of rare earth doped TiO2. Then, experiments were used to verify the key factor analysis effectiveness based on stepwise multiple regression and advantages of the key factor analysis based on k-NN regression...
The rapid moving effect on UWB localization system isn't known, analysis of TDOA localization algorithm is carried out to satisfy the real-time and accurate technology indicator. First, combination with the practical Chan and Taylor series expansion algorithm in a system of rapid moving target, the rapid speed will bring a bigger noise error to be solved. Second, respectively two kinds of computing...
Seal is widely used in oriental countries. Seal verification is performed by matching an input seal image with a reference seal image that was registered beforehand. This paper proposed a noise eliminating and point matching algorithm for seal image verification. The proposed algorithm includes two procedures: seal detection and seal verification. In seal detection procedure, background text is eliminated...
The swing motion of the ship, which is mainly caused by sea wind and sea wave while on cruise, has significant impacts on completing the task of the ship. The paper analyzed the six degree of freedom ship motion. Put forward the characteristic of time series about ship motion methods. Based on the Back-Propagation neural network which has the characteristic that it can approach any nonlinear function...
With the development of domestic tourism, personalized demands for tourist attractions recommendation systems have increased. Since some drawbacks of traditional collaborative filtering include scalability and sensitivity to data sparseness, a new Slope One algorithm with attractions similarity is proposed in this paper. This Slope One algorithm weakens the effect of popular tourist attractions on...
Collaborative filtering algorithm is one of the most successful technologies in recommendation system, and similarity calculation is the core. To solve the problem that the traditional similarity calculation method is not accurate in the case of sparse data, a cooperative filtering recommendation algorithm combining weighted entropy and user attribute is proposed in this paper. This algorithm applies...
In order to evaluate the mental workload of the pilots during the flight, a flight simulation platform for Electroencephalography (EEG) experiment is developed. The platform uses a distributed flight simulation framework, and the flight visual is driven by a real flight dynamics equation. A common simulation parameter architecture based on Extensible Markup Language (XML) is introduced to meet the...
This paper tackles the robust guarantee control problem for three degree-of-freedom (3DOF) helicopter. The 3DOF helicopter system is a typical multiple-input multiple-output (MIMO) system with strong nonlinearity. Based on H2 robust control theory, H∞ robust control theory and the stability theory of switching system, a robust guarantee multiple-model switching control is proposed in this paper, which...
In order to make the unmanned air vehicle(UAV) in the flight process to better complete the altitude control, and can perform more accurate tasks. This paper presents the altitude control based on Millimeter Wave Radar sensors, and combined with the Pixhawk (The flight controller of UAVs) design altitude hold algorithm. The main idea is to transmit the sensor's measurement data to the Pixhawk via...
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