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Peer to peer (P2P) traffic identification is a hot topic in the P2P traffic management. P2P traffic identification method based on support vector machine (SVM) is one of the most commonly used methods. However, the performance of SVM is mainly affected by the parameters and the features used. The traditional method is to separate the SVM parameter optimization and feature selection problem, it is...
Image segmentation is an important technology for image processing. Many segmentation methods have been brought forward for image segmentation, among these methods thresholding is the simplest and effective method in image segmentation. In general, the thresholding method based on two-dimensional histogram can provide better results than that of one-dimension histogram. However, for more accurate...
The goal of image segmentation is to cluster pixels into salient image regions, it is the most significant step in image analysis. Thresholding is a simple but effective tool to separate objects from the background, which is one of the most popular algorithms. The artificial bee colony algorithm (ABC) is a recently presented meta-heuristic algorithm, which has been successfully applied to solve many...
Aimed at solving the deficiencies of having great computation and local optimum, a chaos particle swarm optimization algorithm which has the properties of ergodicity, randomicity and regularity is proposed to solve the optimization problems cited from pattern recognition, and a new method of image segmentation using two-dimensional histogram based on Fisher criterion function is put forward. According...
Image segmentation is the most significant step in image analysis and is a long-term difficult problem, which hasn't been fully solved. Many segmentation methods have been brought forward to deal with image segmentation, among these methods thresholding is the simple and important method in image segmentation. In practical work, 2-dimension (2D) entropy method is often used. It segments images by...
Online Examination System is an effective solution for mass education evaluation. The novel online examination system based on Browser/Server framework which carries out the examination and auto-grading for objective questions and operating questions has been successfully applied to the distance evaluation of basic operating skills of computer science. But most system still use username/password mode...
With the rapid development of information technology, computer technology has been getting more widely used in daily life, thus, it is necessary for each university graduates grasp basic technical skills of computers. However, usually a teacher will be responsible for teaching many college students basic computer courses, so it is difficult to ensure the quality of the teaching with the enlarged students'...
It is well known that land cover change has important implication on urban planning, urban environment evaluation and so on. However, urban land cover information is not easy to be extracted because of its inner complexity resulting from human impact. Under this circumstance, the accurate recognition and classification of different land use types on urban area from remote sensing data has become an...
The measurement speed and accuracy are much better than other similar systems or techniques. In rock engineering, 3D laser scanning technique has been used in geology mapping, rock blasting, rock slope maintains, and rock fracture measurement and analyses. This paper mainly presents 3D laser scanning technique and its applications in rock fracture measurement and analyses. In this paper we present...
In this paper a structure based ridgeline matching algorithm for fingerprint verification is discussed. In order to combine with those global shapes of ridgelines, we first try to represent the fingerprint ridgelines with analyzable curves. We use the B-spline interpolation approach to fit the ridgelines with B-spline curves. Then we employ a ridgeline similarity score distribution algorithm to finish...
Based on the present condition and developing trend of cadastral management of Linhai, The paper explores on the construction status of the cadastral management information system on integration of urban and rural area ofLinhai, Zhejiang. For a long time, urban and rural areas are managed separately, and their databases are established individually, so it's very hard to update data synchronously....
Fingerprint classification is an important indexing method for any large scale fingerprint recognition system or database as a method for reducing the number of fingerprints that need to be searched. Fingerprints are generally classified into broad categories based on global features. This paper describes a new 2-layer fingerprint classifier that uses curve features and singularities. In the first...
The computer discovery technology of terrain features in topographic map is a new research project in the world. In this paper the author uses CD-TIN which is constructed on the basis of contour lines to discover and extract terrain features. The author uses improved convex algorithm to construct non-constrained D-TIN, and then puts forward impacted-region-diagonals-change local adjusting algorithm,...
For the development of land resources informationization, the demand of data communion and information service becomes more and higher. It is necessary to construct integrative land resources data center to manage and maintain diversified thematic data, integrate dispersive and independent land resources information, in order to serve land resources management decision-making better and afford network...
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