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Two applications of Lidar in three-dimensional visualization were proposed. The first one was single tree modeling. Regional-Maximum and K-means algorithm were used to isolate one single tree and its data points, and a SuperQuadric surface was fit as the silhouette of the tree's canopy. Then a geometric tree model was obtained with L-studio software. The second application was 3D vegetation visualization...
In this paper, an analysis of the principle of the shaking table is carried out and a digital servo-valve controller for three-axis six-DOF shaking table based on TMS320F2812 is designed. The result was compared with the analogue controller. AD598 is selected as the modulator-demodulator to condition the displacement signal of the servo-valve main spool.AD7665 is adopted to acquire the conditioned...
Arable land has been decreasing due to rapid population growth and economic development as well as urban expansion. To obtain a better understanding of controlling land use and to design mechanisms to ensure sustainable land management, an accurate prediction of arable land is a key issue fundamentally. In this study, artificial neural network (ANN) model is applied to estimate the arable land change...
Inspired by the biological immunology principle and using its property of autonomy, learning and memory for reference, this paper focuses on the fault-tolerant design method of array processors which has real-time detection and dynamic configuration capabilities, to improve the chip's reliability by ensuring that when fault occurs in one or more of processor elements the chip can also work normally...
Google Map is widely used as a platform for a number of applications because of providing the public satellite maps all over the world, but it is hard for user to add vivid interactive applications on website based on Google Map (GM). The reason is that GM can not provide many features of API while allows the application to mix its content with it before. In order to interact with GM instantly and...
Siddha is a natural treatment and the oldest medical system of healing in the world. Nadi which is a pulse-based diagnosis method which is the skill of feeling the pulse, and is known to dictate all the salient features of a human body. In this paper, we provide a complete spectrum of details of our procedure for obtaining three different pulses based on time series. This system contains contains...
Based on fully hexahedral mesh and the k-e turbulence model, the computational fluid dynamics method was used to the numerical simulation. Different angle of the double-faced deflector and the thermal protection of the launching facilities were calculated. The pressure and temperature parameters were obtained and the result was compared and analyzed. The appropriate model was selected. The numerical...
LED large screen is widely used in modern metropolis advertisements and building brightening and so on fields. In view of the display synchronization of upper computer and the lower computer, this article gives a plan for synchronous display of LED large screen and the VGA, and at the same time it shows the overall design of the system, design of display card information display real-time extraction...
The real time online analysis system that works under the network condition needs to synchronize and harmonize data transmit/receive process and the data handler, especially when facing huge capacity data with at a high transmit/receive/handle speed. Combined with practical experience, the paper puts forward a circular data buffer cache technology and a multi-threading message passing mechanism. The...
The initial sensitivity of chaotic map makes its application more and more widely. The image encryption algorithm based on chaotic theory is a hot researching field recently. Confusion and diffusion are necessary methods to realize the image encryption. However, using the initial sensitivity and randomness of chaotic map can realize the purpose of confusion and diffusion. S-DES system can encrypt...
Aiming at the problems such as long executive time, and extremal extreme extremely complex when using image segmentation method to seek Threshold,a novel 3D maximum entropy image segmentation method is proposed, which uses the threshold of 3D image of the global search space, and takes the gray scale value of prixel and the gray scale mean value of region corresponding to 3D maximum entropy value...
In the crystal research the areas between different grains have great effect on the mechanic, metallurgy, corrosion properties to the material. We call these areas grain boundary. People put great emphasis on them and have tried many methods to research them. The grain boundary has high energy and the energy value is changed with the orientation. Finding the law between them can deepen the material...
In the material research we often investigate the mass transport phenomenon. As is known the mass in metals are transferred by diffusion movement. Most of the physical and chemical process is related with the diffusion phenomenon. It is the most important subject for the material science which we call it diffusion theory. Now we usually adopt the experimental method to research the diffusion in the...
Drainpipe ultrasonic non-destructive testing is liable to be interfered with the external environment. So it is important to remove the noise signal effectively in drainpipe ultrasonic non-destructive testing. The testing system is constructed by self-adaptive wavelet neural networks which is using the wavelet and neural network algorithm. Better fitting signal is achieved by choosing Orthogonal Daubechies...
In this paper, we present the theory and method to implement the Google Maps-style WebGIS based on ArcGIS software. The original spatial data is configured and landscaped by ArcMap or ArcIMS Author, to generate MXD or AXL files. Subsequently, corresponding map service could be easily created by ArcIMS Administrator. And then, some programming work is carried out to build hierarchical map tiles and...
Keystroke rhythm is an identity authentication technique which takes persons behaviour characteristics as basis. In this paper, the PR-RP model were analysed, in which four critical dataset were choosed. P-P and R-R relay dataset were rebuilt, and were processed only through using characteristics of some user entering password. And then, so as to improve the recognition rate of authentication, a new...
In order to overcome the problem of erroneous identification for using fixed threshold of the characteristic parameters of signal to identify signals, this article extracted several parameters and combined with the feature distance and fuzzy evaluation to identify the signal. It is divided into two levels, first of all, comparing the distance to identify the inter-class of signal, and then use the...
Nowadays Google Earth is becoming more and more popular in city planning, disaster control ling, as well as entertainment. Any scene, with terrain and 3D buildings can be roamed wherever on the earth. With more and more 3D buildings brought in the city, Google Earth is viewed as an application of virtual community. However, up to now people can't communicate with each other on the Google Earth instantly...
Traditional Fuzzy c-means (FCM) algorithm is commonly used in unsupervised learning. However, there are some limitations. Cluster number should be determined and the cluster center should be initialized before classification. A new algorithm is proposed in the paper. The best cluster number is obtained by analyzing cluster validity function and the cluster center is initialized by HCM. The data set...
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