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Showing papers in "Microcomputer Information in 2007"


Journal Article
TL;DR: An entropy- based method is developed for selection of DWT coefficients that provides an adaptive way for determining the number of watermarked coefficients and watermarking factor at each level ofDWT decomposition.
Abstract: A new approach for non- blind watermarking of still gray level images in the wavelet domain. The method uses the Human Visual System (HVS) characteristic, and an innovative entropy based approach to create an efficient watermarking scheme is presented in this paper. It decomposes original image in DWT domain in to three hierarchical levels and watermarks it with a logo image, which is scrambled through a well- known PN- sequence. An entropy- based method is developed for selection of DWT coefficients that provides an adaptive way for determining the number of watermarked coefficients and watermarking factor at each level of DWT decomposition. This approach shows an excellent resistance against almost all the attacks known in the watermarking literature. The detection results of the method reveal better resistance in comparison to the existance methods.With simple modifications, the method can be used for color images and in real time systems.

14 citations


Journal Article
TL;DR: A new recognize technique was issued, which was ground on the maximum gradient comparing subtraction method, and introduced by elabo-rating certain arithmetic of the key segments of the very method.
Abstract: This paper,based on the theory of pointer meters and standard recognize technique. issued a new recognize technique,which was ground on the maximum gradient comparing subtraction method. The function process of this new technique was introduced by elabo-rating certain arithmetic of the key segments of the very method. Furthermore,some experiment results as well as the analysis demonstrate the optimization strategy.

11 citations


Journal Article
TL;DR: To improve the de-noising effect, an improved method is presented based on the analysis of soft threshold and hard threshold de -noising methods which are widely applied and can reduce the loss of information while it’s de- noising.
Abstract: To improve the de-noising effect ,an improved method is presented based on the analysis of soft threshold and hard threshold de -noising methods which are widely applied.The key of wavelet thresholding de -noising is constructing thresholding function and selecting thresholding.It syncretizes different traits of soft-threshold and hard-threshold de-noising methods and param-eters which can be adjusted properly to produce the best estimations of the wavelet coefficients are imported in the improved thresholding function. The parameters enable the function to become a more general case in which it incorporates the hard and soft thresholding,the shortcoming which is either worst in de-noising or preserving the original signal is effectively overcomed. The sim-ulation results show that this method can reduce the loss of information while it’s de-noising . The enhancement of the SNR and the reduction of the RMSE indicate that the performance of this method is better than the hard and soft threshold methods.

8 citations


Journal Article
TL;DR: According to off-line learning method of neural networks, this paper focus on the noise filter in the 3Dreconstruction process in order to make the image clearer.
Abstract: The principle having discussed BP neural networks detailed and their model building-up process,the teaching and student job drawing support from the computer information to employment carrying out the knowledge excavating,gaining on to guiding the days to come have importance and in the job applying it to colleges and universities student employment. Simulated result of experi-ment indicates that model being able to forecast effect that very good realization anticipates that.

8 citations


Journal Article
TL;DR: In this paper, the improved Otsu arithmetic has been used for detecting abrasion of locomotive pantograph and catenary in warehouse entry system so their labor intensity has decreased greatly.
Abstract: Threshold technology which is one of the most important and efficiency technology in image segmentation is based on area image segmentation in many arithmetic. Principle and performance of several image segmentation arithmetic in common use has been involved in the thesis. And the improved Otsu arithmetic has been used for detecting abrasion of locomotive pantograph and catenary in warehouse entry system. So their labor intensity has decreased greatly.

8 citations


Journal Article
TL;DR: Three evaluation functions are discussed to find out which is most reasonable method to solve the problem of navigation of mobile robot with programmed on VC++6.0 plat- form.
Abstract: Solving path finding problem has many different ways. Using A*Algorithm, this paper discusses three evaluation functions to find out which is most reasonable method to solve the problem of navigation of mobile robot. With programmed on VC++6.0 plat- form, the best one function has been chosen.

6 citations


Journal Article
TL;DR: By the hardware interface of the embedded system, it becomes possible that the data is transmitted between the main control system and the bottom equipments of Physiological Parameter Monitoring module and the user real time by the monitoring system.
Abstract: Hardware platform of ARM9 is used as a main control module of the physiological parameter monitoring embedded system, and an embedded Linux system is constructed. The hardware drive program and the software for multiple physiological parameters monitoring for the main control system is researched. By the hardware interface of the embedded system, it becomes possible that the data is transmitted between the main control system and the bottom equipments of Physiological Parameter Monitoring module. And it can monitor the user real time by the monitoring system.

5 citations


Journal Article
TL;DR: The article has anglicized the sys-tem structure and model, even the sort of the technology, and brought up the various functions and so-lutions based on the ARM Embedded System, especially the software debugging system.
Abstract: Recently, the Embedded System has developed promptly, and has broadened its sphere. The article has anglicized the sys-tem structure and model, even the sort of the technology. At the same time, the article has brought up the various functions and so-lutions that based on the ARM Embedded System, especially the software debugging system; modularization and the hardware abstract that under the system.

5 citations


Journal Article
Hen J1
TL;DR: This paper simple presented the theory of DDS technique and how it work, designed and implemented by using VHDL hardware description language as design input and the Altera' s Cyclone chip as carrier.
Abstract: This paper simple presented the theory of DDS technique and how it work. It is designed and implemented by using VHDL hardware description language as design input and the Altera' s Cyclone chip as carrier. It provide different kinds of normal wave- form such as sine wave , square wave, pyramidal wave and so on. The frequency and phase of output signal are adjustable. It has been designed and analyzed in QuartusII software.

5 citations


Journal Article
TL;DR: Experimental results indicate that the new algorithm for rectangle detection based on Hough transform can detect rectangles quickly and precisely.
Abstract: This paper proposes a new algorithm for rectangle detection based on Hough transform. Peaks of the Hough image,which correspond to line segments,are extracted,and a rectangle is detected when four extracted peaks satisfy certain geometric conditions. Experimental results indicate that the approach can detect rectangles quickly and precisely.

5 citations


Journal Article
TL;DR: The design of ZigBee wireless solution is presented mainly adopting RF chip CC2430 with MCU, the system' s structure and working principle, and hardware circuits and software designing are given too.
Abstract: Wireless sensor network are integration of sensor techniques,nested computation techniques,distributed computation techniques and wireless communication techniques and so on,is an interesting field,and gains more and more attentions. The wide application prospects make it develop rapidly in some field such as military,environment science,smart home and so on. As it running at a remote area where people can' t or can' t conveniently reach and might being impossible in substitution of power resources,the wireless sensor network has a key problem on designing a rational network node. The design of ZigBee wireless solution is presented mainly adopting RF chip CC2430 with MCU. The system' s structure and working principle,and hardware circuits and software designing are given too.

Journal Article
TL;DR: A new method is presented according to the self-adjusting threshold of 2R-G-B, the algorithm can recognize single or multi-fruits easily and accurately, especially a portion of the fruits overlapped or sheltered.
Abstract: A new method is presented according to the self-adjusting threshold of 2R-G-B, the algorithm can recognize single or multi-fruits easily and accurately, especially a portion of the fruits overlapped or sheltered; the Circular Hough transform arithmetic can simulate the object image centroid coordinates and radius realistically; The new match technique of the binocular stereo vision can locate the objects accurately. The result shows that the recognition correctness rate is high up to 95%, and when the work distance is less than 1.0m, almost all the errors are less than 0.8cm, the algorithm is effective、robust and universal.

Journal Article
TL;DR: A new automatic grain insect counting system was developed and an optimal thresholding method for image segmentation based on these images is presented, proving this algorithm works well in paddy sample images.
Abstract: At present,online detecting and controlling system of grain storage can’t settle two problems: which kind the insect is,and how many the insect the grain have In this paper,a new automatic grain insect counting system was developed First,Image process-ing technology is used to process the grain sample images Then,an optimal thresholding method for image segmentation based on these images is presented At last the paper discusses an automatic grain insect counting algorithm The experiment proved this sys-tem works well in paddy sample images

Journal Article
TL;DR: The article discusses in details the system designing idea, frame form, realization method and function of a integrated measurement system based on virtual instrument technology, which has widely applications foreground in practice engineering.
Abstract: With a View to the present situation and future development of the industrial automatic control domain,the paper provides a design scheme foraintegrated measurement system based on virtual instrument technology.Taking data acquisition card and generic per-sonel-computer as the primary hardware and using the language LabVIEW to design and development a integrated measurement sys-tem,the article discusses in details the system designing idea,frame form,realization method and function. Compared with traditional measurement system,the integrated measurement system based on virtual instrument technology takes on the characteristic of good maneuverability,operation shortcut advantageous,strongly function and can realize automatism data acquisition and remote online condition monitoring,the system has widely applications foreground in practice engineering.

Journal Article
TL;DR: The result of simulation indicate the proposed scheme have better dynamic and static characteristics and strong robustness than current schemes.
Abstract: As to the horizon motion system of Bridge Crane is a nonlinear,variation parameter and strong coupling system,the fuzzy self-regulating PID controller is used for positioning and anti-swing. The result of simulation indicate the proposed scheme have better dynamic and static characteristics and strong robustness .

Journal Article
TL;DR: This paper researches how the GIS can be applied in the 3G net- work management system, explains how it can satisfy the management system and makes a simple expectation of the future.
Abstract: With the successful commercial application of the 3G technique globally, it must become a trend of China’s communication technique. Compare with the conventional 2G network, the new network challenges the network management system not only in the complexity of the net, but also in the diversity of the equipment. This paper researches how the GIS can be applied in the 3G net- work management system, explains how it can satisfy the management system and makes a simple expectation of the future.

Journal Article
TL;DR: The characteristic of drowsy driving is aimed at, models from the sight of person's driving behavior to distinguish the drivers who are too tired and makes a simple expectation of the future.
Abstract: The road traffic injury is a kind of fatal disaster. Every year it heartlessly takes away about 1200000 person's lives in the whole world,and the drowsy driving which brings more and more dangers to the security of traffic is the most important reason of road traffic injury. This paper aims at the characteristic of drowsy driving,models from the sight of person's driving behavior to distinguish the drivers who are too tired and makes a simple expectation of the future.

Journal Article
TL;DR: A fast Hough Transform algorithm for line detection based on classification is designed and implemented and it has indicated the algorithm for straight line detection has advan-tages of high computation speed, high detection precision and more robustness, and has value in practice.
Abstract: on the basis of analyzing Hough Transform,two dots voting Hough Transform,and the multilevel Hough Transform for straight line detection,aiming at weakness of these algorithms,combining with their merits,a fast Hough Transform algorithm for line detection based on classification is designed and implemented ,and the algorithm is described and the merits of algorithm are ana-lyzed,and the validity of algorithm was validated by experiment It has indicated the algorithm for straight line detection has advan-tages of high computation speed,high detection precision and more robustness,and has value in practice

Journal Article
TL;DR: This paper proposes a new algorithm that combines all kinds of algorithms, optimizes the prediction way of thinking, and fully discovers the advantages of differ-ent algorithms, and turns out to be practical and productive.
Abstract: Intelligent Transportation System is the best measure to solve the urban traffic jam in the world; forecasting urban traffic network is the premise for developing urban intelligent transportation system. In this paper, some important forecasting models, includ-ing the theory and characteristic, are discussed, and the factors are discussed to influence the forecasting model. In the end ,com-bined prediction of city traffic flow based on genetic algorithm is given, using the characteristics of genetic algorithm’s colony search, the new algorithm combines all kinds of algorithms, optimizes the prediction way of thinking , fully discovers the advantages of differ-ent algorithms ,and turns out to be practical and productive.

Journal Article
TL;DR: The design pattern of the Rich Internet Application based on independence framework and the mechanism of data collaboration using the Data Services are discussed and the model and char-acteristics of the collaboration RIA WebGIS are studied for the application of GIS.
Abstract: Taking the production of Flex2 as an example,this paper discusses the design pattern of the Rich Internet Application(RIA) based on independence framework and the mechanism of data collaboration using the Data Services. Furthermore the model and char-acteristics of the collaboration RIA WebGIS are studied for the application of GIS.

Journal Article
TL;DR: The Computer Data Encryption card PCIJMC2000 en/decrypts data with DSP and FPGA provides a convenient way for us to update encryption algorithm by applying hardware and software technolo-gy and makes the encryption code more safely.
Abstract: The Computer Data Encryption card PCIJMC2000 en/decrypts data with DSP and FPGA. PCIJMC2000 can process data at a speed of 20Mbit/s. It provides a convenient way for us to update encryption algorithm by applying hardware and software technolo-gy. And, it makes the encryption code more safely. We can take DSP to realize fast encryption algorithm because of its highly paral-lelism, application-specific hardware logic, and application-specific instructions. PCI transaction and DSP processing of data can take place simultaneously for its dual-access RAM and host port interface. And, the time taken for interruption almost can be ignored be-cause of deep buffer technology.

Journal Article
TL;DR: A modified MUSIC algorithm based on the approximate peculiarity of the noise's eigenvalues of sample covariance matrix is presented, which can estimate DOA properly when the source number is unknown.
Abstract: On the basis of introducing the principles of MUSIC algorithm,the performance of MUSIC algorithm under errors of source number is analyzed in this paper.In order to resolve the problem that some peaks disappear when the source is under estimated and some unexpected peaks appear in MUSIC spectrum when the source number is over estimated,A modified MUSIC algorithm based on the approximate peculiarity of the noise's eigenvalues of sample covariance matrix is presented,which can estimate DOA properly when the source number is unknown.Computer simulation results approve the validity and effectiveness of this modified algorithm.

Journal Article
TL;DR: MVGA algorithm, which uses mutual variance as the adaptation function and optimize each step of the algorithm for furthest reducing complexity from search space, can be used to multi- sensors images matching without extracting feature and adopts efficient optimization.
Abstract: General gray- based method can’t deal with the matching of multi- sensor images and Feature- based method appears com- plex . For the request of low calculation quantity and powerful applicability, MVGA algorithm is proposed. We use mutual variance as the adaptation function and optimize each step of the algorithm for furthest reducing complexity from search space. The new algo- rithm is gray- based , can be used to multi- sensors images matching without extracting feature and adopts efficient optimization tac- tic. As a result, the efficiency is improved . The validity of the algorithm is verified through experiments.

Journal Article
TL;DR: ANFIS based on expert experiences optimizes the parameters of fuzzy controller by training and learning sample data to control the inverted pendulum and is compared with LQR.
Abstract: In this paper,ANFIS(Adaptive Neural-Fuzzy Inference System) is used to control the triple inverted pendulum. ANFIS based on expert experiences optimizes the parameters of fuzzy controller by training and learning sample data. This controller is to control the inverted pendulum. ANFIS is compared with LQR(Linear Quadratic Regulator). The result of experiment indicates it has better performances in setting time and stability.

Journal Article
TL;DR: A new fusion method based on nonsampled contourlet transform (NSCT), which has not only the properties of multi-resolution and multi-direction, but also the property of translation invariance, which is useful in eliminating the Gibbsphenomenon is proposed.
Abstract: The paper proposed a new fusion method based on nonsampled contourlet transform (NSCT). NSCT has not only the properties of multi-resolution and multi-direction, but also the property of translation invariance, which is useful in eliminating the Gibbsphenomenon. By selecting different fusion rules for different levels, the proposed method performs better than the contourlet basedmethod. The detail experimental results are shown to demonstrate its effectiveness. The comparison with wavelet and nonsampledwavelet are also made. The proposed method shows good improvements.

Journal Article
TL;DR: This article according to the wavelet transformation principle and the LSB technology proposed one kind enhanced the robust gradation picture watermark algorithm, caused the watermark system anti- attack capability big enhancement.
Abstract: This article according to the wavelet transformation principle and the LSB technology proposed one kind enhanced the robust gradation picture watermark algorithm, caused the watermark system anti- attack capability big enhancement. The watermark withdraws certainly does not need the primitive carrier picture the participation, has realized in the true sig- nificance blind watermark examination.

Journal Article
TL;DR: The paper introduces total scheme and hardware design of the system in detail and describes the designator of distributed traffic signal lights intelligent control system by three control styles of Vehicle flux, remote and PC.
Abstract: A development of distributed area traffic signal lights control based on single-chip microcontroller through CAN BUS is described With the core of AT89C51, infrared receiver receives the infrared signal coming from launcher The demodulation signal is treated by single-chip microcontroller The single-chip microcontroller controls the CAN BUS controller to structure CAN BUS com-munication system to transmit the data The designator of distributed traffic signal lights intelligent control system was carried out by three control styles of Vehicle flux, remote and PC The paper introduces total scheme and hardware design of the system in detail

Journal Article
TL;DR: The judgment progress using the cloud model executes the transform between the qualitative object and ration and makes the judgment model get more persuasion and to be more easily suitable.
Abstract: The uncertainty of the conception leads to the Fuzzy and random property of the language and both of the properties are correlative. The judgment progress using the cloud model executes the transform between the qualitative object and ration and makes the judgment model get more persuasion and to be more easily suitable. The new model also can give us a set of judgment of the different factors impersonally and the content distinguishes from the traditional ways. The feasibility and effectiveness of new method are demonstrated by an example.

Journal Article
TL;DR: A new algorithm, called the Clonal Selection Algorithm Based on Antibody Density (CSABAD), is brought forward and successfully implemented in text categorization and shows that CSAB AD significantly outperform Rocchio and Naive Bayes.
Abstract: The clonal selection principle and density control mechanism are used by the natural immune system to define the features of an immune response to an antigenic stimulus. It establishes the ideas that only those cells that have higher affinity and lower den-sity are selected to proliferate. A new algorithm,called the Clonal Selection Algorithm Based on Antibody Density (CSABAD),is brought forward and successfully implemented in text categorization. In text categorization,antigen,B cell and antibody are respec-tively corresponded with training text,an individual of classifier and affinity between the individual and training texts. The final clas-sifier is composed with many memory B cells. The method is applied to the 20_newsgroups dataset and we obtains a F1 score of 80.90%. The result shows that CSABAD significantly outperform Rocchio and Naive Bayes.

Journal Article
TL;DR: Simulating experiments are presented at last to proved the validity and reliability in the whole design of the method Top-Down to implement UART based on Field Programmable Gate Array.
Abstract: This paper introduces a method to implement UART based on Field Programmable Gate Array( FPGA) . At first a theory on asynchronous serial communication UART is provided ,and then hardware interface circuit design ,coding with Verilog to realization of communication based of FPGA are described. The structure of this system is divided in modularization so that can fit the method Top-Down. Simulating experiments present at last to proved the validity and reliability in the whole design.