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Over-segmentation of a grayscale image is a typical problem in existing watershed algorithms. To overcome this problem, preprocessing is mainly applied to the grayscale image before performing the watershed transformation to generate a gradient or binary image. In this paper, a novel watershed algorithm based on the concept of connected-component labeling and chain code is proposed, which generates...
This article takes the multi-weapon formation coordination attack ground target as the background. We have established the mathematical model of the ground maneuvering target with the constraint space factor. We design an anytime algorithm for solving this kind of optimization problem based on the idea of distributed cooperative auction algorithm and give the method to optimize the auction algorithm...
For broadband wireless systems, the channel between the transmitter and the receiver exhibits frequency selectivity in nature. In this paper, an Finite impulse response (FIR) precoder which supports multiple streams at the transmitter and an FIR minimum mean-squared-error decision feedback equalizer (MMSE-DFE) at the receiver are jointly designed for broadband multi-input multi-output (MIMO) multicast...
The traditional learning resources system gathered a mass of heterogeneous data. It is deficient in intelligence and personalization. Its development is complicated and long period. Learners acquire desired resources only through tedious frequent search. In view of shortcomings found in traditional learning resources system, this paper applied data mining technologies to the research of intelligent...
This paper proposes an optimal path planning algorithm incorporating a global and local search mechanism for mobile robots. The global path planning is based on Voronoi graph to establish a backbone path for the map with significantly reduced nodes for the original grid map. With the use of the backbone path, the D* algorithm is adopted to determine a shortest path between the starting and end points...
This paper presents a novel on-line feature selection mechanism based on mean shift tracking algorithm, which adjusts the weight for each feature and each bin in feature histograms during the tracking process, according to the discrimination between the appearance of object and background with different features. Then the tracking performance would be stable and reliable using those features combined...
At present, the region growing algorithm has been used as a segmentation technique of digital images. Most region growing algorithms are using fixed or determinate criterions to distinguish disease spots from leaf image with gray level differences between leaf and disease spot. But in practice, the objects in the disease leaf image have fuzziness and uncertainty, and edges of the objects are unclear...
Several common used image mosaics algorithms are analyzed and compared and new algorithm based on feature points matching is presented, in which stitch points is determined through finding corresponding feature points of two images and its matching position is determined; Image mosaics are accomplished through fusing process in overlapping area and experiment is carried out in order to test the algorithm...
In order to overcome the defect of physic-chemical monitoring system and enhance the intelligence of biological monitoring technology, an online monitoring system of fish behavior is proposed in this paper. The main contributions of this system are as follows: 1) adaptive background updating algorithm (ABU); 2) automatic camshift tracking algorithm (ACT) with twice searching; 3) particle filter tracking...
This paper proposed an algorithm of collision detection based on a hybrid model which was different from other collision detection model. In this model, different box was used according to different occasion. And the algorithm of intersection calculation between bounding boxes was analyzed and finally the optimization of collision detection based on the hybrid model was gained.
Through constructing an average opacity buffer with the same size of opacity buffer, the visibility of data cell could be estimated by the value of gravity center of this data cell in average opacity buffer. That could make the data cell which completely located in the average opacity buffer cut during the process of volume rendering in object space sequenced irregular data field and could dramatically...
On-demand broadcast is an effective data dissemination approach in mobile computing environments. Previous studies on on-demand broadcast were under the assumption that each client requests only one data item at a time. This assumption may not be practical for the increasingly sophisticated mobile applications. In this paper, we focus on multi-item requests. We analyze the request overlapping characteristic...
A kind of routing scheme with the ability to tolerate the faults is necessary in the massively parallel multiprocessors.In this paper, we would present a fault-tolerant wormhole routing scheme, called positive-first-negative-first scheme, in the torus network with orthogonal convex polygon faults model, this fault-tolerant routing scheme is motivated by the PFNF routing algorithms that with positive-first...
On-demand broadcast is an effective wireless data dissemination technique to enhance system scalability and capability to handle dynamic data access patterns. Previous studies on time-critical on-demand data broadcast were under the assumption that each client requests only one data item at a time. With rapid growth of time-critical information dissemination services in emerging applications, there...
In recent years, researchers show considerable interests in identification of communities in complex networks. Diverse methods have been developed to address this problem. This paper presents a new algorithm for identifying communities in complex networks. The algorithm was inspired by studies on the effect of structural holes in networks. We tested the performance of the new algorithm with several...
The efficiency of alarm mining in large scale network is a hot topic in research area of fault location. Many projects have been utilized to improve it and some advance has been achieved, but it is still not very satisfied. Large scale telecom system daily generates large numbers of original alarm records and many of them are redundant information, actually useful information for fault location is...
Advance Reservations are usually adopted to guarantee the QoS of Grid applications by reserving a particular resource capability over a defined time interval on local resources. Single machine scheduling is the basis of more complicated parallel machine scheduling. Assume the information (e.g., arrival time, required processing time) on queued AR and non-AR jobs is known before scheduling, it is NP-hard...
On-demand broadcast is an effective wireless data dissemination technique to enhance system scalability and capability to handle dynamic user access patterns. Previous studies on time-critical on-demand data broadcast were under the assumption that each client requests only one data item at a time. With rapid growth of time-critical information dissemination services in emerging applications, there...
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