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.
The hidden Markov model (HMM) and the high order Markov model have higher prediction accuracy than the first order Markov model, and then widely used in pattern recognition such as speech, handwriting and gesture recognition. In the high-order Markov chain, the number of parameters grows exponentially with respect to the order, and hampers the parameter estimation. To solve these problems, Raftery...
The traditional Chan-Vese (C-V) model is sensitive to noise and inaccurate positioning of the edges in an image. This paper proposes a C-V model based on the Gaussian Laplace operator. By smoothing the image, the Gaussian smoothing function can reduce noise on the image segmentation. The Laplace operator can detect zero crossing points, and then determine the edge positions of the image. The experiments...
Based on the stratified observed data of flow velocity and sediment concentration of two consecutive tidal cycles at 29 stations in the tidal channels of Jiangsu radial sand bars, this paper establishes a series of dynamic relational expressions of vertical mean sediment concentration in the tidal channels of radial sand ridges with the measured data. The studies show that these vertical mean expression...
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.