The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In this study, we develop a novel vision-based Kodály musical hand signs recognition system to recognize the gestures of the musical notes. Vision-based gesture recognitions often face the following problems. First, the illumination change can influence the hand detections. Second, the hand tracking will become difficult under the complex background. To overcome the aforementioned problems, we propose...
To analyze and predict the flight safety situation scientifically, a flight accident prediction model, based on least squares support vector machine (LS-SVM), is proposed. Simultaneously, three steps grid search method is introduced into the flight accident modeling to select efficiently the parameters of LS-SVM. The simulation results of modeling and predicting on flight accident 100000-hour-rate...
A method for fatalness evaluation of flight safety hidden danger, based on support vector machine (SVM), is proposed. And the corresponding model, which makes the basic evaluation factors of flight safety hidden danger fatalness as input node and evaluation results as output node, is established. Then the safety situation of a regiment of China Air Force is evaluated. The application result shows...
An automatic selection method for Support Vector Machine (SVM) parameters using niches genetic algorithm in determined range is proposed. Firstly, the limit range of each parameter is determined by analyzing relation between SVM parameters and model capability. Then regard the determined range as search region and use the niches genetic algorithm to automatically search the optimal parameter values...
The establishment of non-linear model of piezoelectric actuator is a key link of the nano-scale micro-displacement measurement and control. Due to the inherent nonlinearity and the influence of load pressure, piezoelectric actuator always causes position error in the open-loop system and instability in the closed-loop system. Based on the experiment of creep characteristics, the effect of driven voltage...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.