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 nonlocal means (NLM) algorithm is one of the best image denoising algorithms because of its superior capability to retain the texture details of an image and is widely used in remote sensing (RS) image preprocessing. However, the time complexity of the algorithm is very high due to its nonlocality when searching for similar pixels. As a result, the NLM algorithm cannot satisfy the near real-time...
In this paper, we propose a novel concept of virtual resource chain for Software Defined Campus WLANs (SD-WLANs). A typical SD-WLAN is composed of three layers, i.e., infrastructure, access control and application layers. Firstly, the network control plane is decoupled from the forwarding plane, and soft-defined access points (SD-APs) merely execute the forwarding rules according to the instructions...
In this letter, we propose a quasi-quadrature phase shift keying (QPSK) partitioning to replace the conventional QPSK partitioning in the first stage of the carrier phase estimation (CPE) algorithms for 32-QAM optical systems. By using the proposed quasi-QPSK-partitioning method, the ability of the CPE algorithms to track changes of phase is greatly enhanced. For 1-dB SNR penalty at bit error rate...
We proposed a scale adaptive Kalman filter algorithm based on quaternion correlation of color image. Kalman filter is used to predict the object motion direction and define the searching window. In the searching window, the correlation of object and the image is calculated to get the accurate position of the object. Scale adaptive method is efficient to the situation of object size changing. Experiments...
In this paper, we proposed a super pixel based depth map propagation algorithm for the application in 2D to 3D video conversion. The proposed algorithm employs four main processes to generate depth maps for all frames in video sequences. First, the depth map of the key frames in the input sequences are generated by manual work. Second, the frames in the input sequences are over-segmented by Simple...
In order to solve the problem of state-extend in network multicast, aggregated multicast algorithm was proposed. Based on the existing routing algorithms, this kind of swarm intelligence algorithm (ant colony algorithm) can construct matching between aggregated trees and communication groups in the concurrent multicast groups and consequently improves the communication quality of network. Group-tree...
IP multicast often has great scalability problem with the router to keep forwarding state for every multicast tree passing through it. An aggregated multicast technology were proposed by Jun-Hong Cui and others in order to solve this problem, which enables the multicast groups that can be integrated to share one distribution tree so that the multicast state can be reduced efficiently. But this is...
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.