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Liang X.,Guangdong Womens Polytechnic College
Journal of Convergence Information Technology | Year: 2012

In modern systems, data security is needed more than ever before and many cryptographic algorithms are utilized for security services. Wireless Sensor Networks (WSN) is an example of such technologies. In this paper an innovative SOPC-based approach for the security services evaluation in WSN is proposed that addresses the issues of scalability, flexible performance, and silicon efficiency for the hardware acceleration of encryption system. The design includes a Nios II processor together with custom designed modules for the Advanced Encryption Standard (AES) which has become the default choice for various security services in numerous applications. The objective of this mechanism is to present an efficient hardware realization of AES using very high speed integrated circuit hardware description language (Verilog HDL) and expand the usability for various applications. As compared to traditional customize processor design, the mechanism provides a very broad range of cost/performance points. Source


Liang X.,Guangdong Womens Polytechnic College
Journal of Convergence Information Technology | Year: 2012

Fingerprint authentication is becoming an important security requirement in various embedded systems. While traditional identification method, user ID plus password cannot satisfy users' needs due to various defects, they are increasingly being replaced by biometric technologies such as fingerprint, face, and voice recognition, which are known to provide higher levels of security for user authentication. In this paper, an effective wireless fingerprint authentication system is presented. We designed the wireless fingerprint authentication based on Altera's Nios II processor. The whole system design includes real-time fingerprint image collection, image preprocessing, feature extraction, matching processes, a database and wireless transmission. Source


Cai K.,Zhongkai University of Agriculture and Engineering | Liang X.,Guangdong Womens Polytechnic College
Journal of Convergence Information Technology | Year: 2012

In this article, a fully automatic segmentation algorithm for the whole heart in cardiac computed tomography (CT) image volumes is presented. The proposed method is based on the use of an atlas label image volumes, where the desired structure is manually segmented by technical experts and double-checked by cardiologists. The three-dimensional(3D) CT images segmentation is done by registration of the reference image volumes to input images(the 3D images needing segmentation), followed by a propagation of the segmentation result from the atlas onto the input images. In the registration process, the normalized mutual information is used as an image similarity measure, while optimization is preformed using an adaptive stochastic gradient descent method. To accelerate computation time, registration was done in a multi-resolution fashion, with six resolution levels. The algorithm has been applied to the fully automated segmentation of 3D cardiac CT in volunteers. The experiment showed that the method produces accurate segmentations. Source


Jingmin L.,Guangdong Womens Polytechnic College
International Journal of Advancements in Computing Technology | Year: 2012

A new color image segmentation algorithm of foreground and background based on Mean Shift has been proposed and implemented. The image is pre-segmentation in some areas using Mean Shift algorithm, under the MAP--MRF framework, we can get a source--sink graph about the image, and then making use of the color histogram, we can give different weights to every region. Use max-- flow algorithm to segment the weighted graph and a min--cut can be got. According to the users' inputs, some boundary can be processed by matting algorithm. The experimental results show that the method only requires less users' inputs and has a better segmentation efficiency. Source


Liang X.,Guangdong Womens Polytechnic College
2010 International Conference on Future Information Technology and Management Engineering, FITME 2010 | Year: 2010

With the rapid development and extensive application of computer technology, information management has become an important direction for the reform and development of office information management. The rapid development of information technology pays a solid technical foundation for office information management. Information management platform can greatly improve work efficiency and service level. Therefore, information management platform has great significance in the modern management. In view of the above, the paper made a systematic study on design and implementation of smart print information management system platform which based on a modular structure and C/S architecture. First, the paper made an overall architecture and functional design for the system based on the analysis of workflow of the print work. It introduced the achievement of specific functional modules of the C/S part. Secondly, the paper made a research on Multi-layer structure design patterns. It made a realization of a modular-based, loosely coupled, maintainability, scalability, portability and reusability smart print information management platform in light of the actual demand. Finally, the paper discussed the security of the system on aspect of authentication, data backup and exception handling. At present, the system this paper talked about has been put into use and gets good results. © 2010 IEEE. Source

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