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International Conference on Bio-Inspired computing: Theories and Applications, BICTA

作者： Qian Wang Qiang Zhang Xiaopeng Wei Key Laboratory of Advanced Design and Intelligent Computing Ministry of Education Dalian university Dalian China

With the rapid development of DNA computing, people began to use DNA technology to encrypt information. In this paper, we combine the biological characteristics of DNA and the improved sequence of Logistic mapping method, encrypt the image. The biological characteristics of DNA can better scramble image pixel, and the improved sequence can better change the pixel values. The encryption effect of this paper is better than traditional encryption, and the correlation of adjacent pixels is very low.

关键词： Biomedical imaging Cryptography Clocks Biology

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Digital image watermarking robust to geometric attacks based on wavelet domain

Digital image watermarking robust to geometric attacks based...

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International Conference on Bio-Inspired computing: Theories and Applications, BICTA

作者： Na Ma Qiang Zhang Ying Li Key Laboratory of Advanced Design and Intelligent Computing Ministry Education Province Dalian University Dalian China

This paper presents a new wavelet domain watermarking method, the carrier image using wavelet decomposition. After the Walsh transform low frequency wavelet coefficients, calculated by block adaptive embedding strength, modify the wavelet coefficients of each block, and then do singular value decomposition (SVD), repeat on embedded watermark in the singular value. Fractional part of the anti-transformed image is saved, correction of the watermarked image can be accurately extracted watermark. The experimental results demonstrate that the proposed algorithm can effectively resist cutting, scaling, translation and other geometric attacks, attacks in general are also robust.

关键词： Discrete wavelet transforms Robustness Chaos Transform coding

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Creative design of solar energy portable lamp based on product gene and intuition models

Creative design of solar energy portable lamp based on produ...

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IEEE International Conference on Industrial Engineering and Engineering Management, IEEM2010

作者： Zhao, Ting-Ting Ju, Zhen-He Wei, Xiao-Peng Li, Xiao-Xiao Department of Information Engineering Shenyang Institute of Engineering Shenyang China Key Laboratory of Advanced Design and Intelligent Computing Dalian University Ministry of Education Dalian China Liaoning Solar Energy R and D Co. Ltd. Shenyang China

ISBN: (纸本)9781424485031

Intuition process is a very essential in the product creative design stage. A new creative design approach is put forward based on product gene and intuition models. The product gene model and its sequential gene manipulation are established. The intuition process reflects that the thinking of human brain produces qualitative change. An approach of intuition simulation is used by Hebb learning law, Hopfield neural networks and crossover and mutation. The calculating models and the calculating formulas for the creative design are put forward. Finally, this essay offers us the applied examples for creative design of solar energy portable lamp. The better results are obtained in the creative design. ©2010 IEEE.

关键词： Solar energy

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An image encryption algorithm based on dual dna sequences for image hiding

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ICIC Express Letters 2010年第4期4卷 1393-1398页

作者： Zhou, Shihua Zhang, Qiang Wei, Xiaopeng School of Mechanical Engineering Dalian University of Technology Dalian China Key Laboratory of Advanced Design and Intelligent Computing Ministry of Education Dalian University Dalian China

Image encryption is one of the most important methods of image information hiding. A new image encryption method based on dual DNA sequences for image hiding is presented in this paper. This method is implemented by using the natural DNA sequence and the chaotic initial value as keys and the chaotic map as main tool to fully exert the special advantages. Firstly, the DNA sequence is used to express the original image has been confused and key DNA sequence are calculated in light of the given definition. Then, the new DNA sequence is confused based on the chaotic sequence is generated by Logistic Mapping. The experimental results and analysis demonstrates that the image encryption algorithm is feasible and highly secure. Moreover, the size of the encrypted image is the same as the original image so that it can be applied for image hiding and be transmitted via the Internet. ICIC International © 2010 ISSN 1881-803X.

关键词： DNA sequences

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Image encryption based on dna splicing system and henon model

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ICIC Express Letters 2010年第3期4卷 1011-1018页

作者： Zhou, Changjun Wei, Xiaopeng Zhang, Qiang Wang, Bin School of Management Dalian University of Technology Dalian 116024 China Key Laboratory of Advanced Design and Intelligent Computing Ministry of Education Dalian University Dalian 116622 China

In this paper, we introduce a mixed image encryption scheme which is corn-posed of the Henon model and the formal model of DNA computing-splicing *** this scheme, we transform the digital image into DNA sequence based on DNAcode theory, and then scramble the DNA sequence through employing splicingoperation with a permutation matrix which, is generated by Henon chaotic ***, security analysis and simulation results show that the proposed schemeis effective, and it has wide secret key space, strong sensibility, high,security and good ability of resisting statistic attack. ICIC International © 2010.

关键词： DNA sequences

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A new image encryption algorithm based on encryption template

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Journal of Information and Computational Science 2010年第8期7卷 1661-1667页

作者： Zhou, Shihua Zhang, Qiang Wei, Xiaopeng School of Mechanical Engineering Dalian University of Technology Dalian 116024 China Key Laboratory of Advanced Design and Intelligent Computing Dalian University Ministry of Education Dalian 116622 China

In order to enhance the image information security, image encryption becomes an important research direction. A new image encryption algorithm based on encryption template is presented in this paper. This algorithm is implemented by using the natural DNA sequences as main keys and the new defined encryption template as main tool to fully exert the special advantages. Firstly, the original image is confused in the light of the chaotic sequence is generated by Logistic Mapping. Secondly, the encryption template is generated by the new given definition in which DNA sequences and chaos game representation are used. Thirdly, the pixel gray values of the new image and the ones of the encryption template are XORed bit-by-bit. The experimental result demonstrates that the image encryption algorithm is feasible and simple. Through performance analysis, this algorithm is robust against all kinds of attacks and owns higher security. Copyright © 2010 Binary Information Press.

关键词： Cryptography

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Image Encryption Algorithm Based on DNA Sequences for the Big Image

Image Encryption Algorithm Based on DNA Sequences for the Bi...

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International Conference on Multimedia Information Networking and Security (MINES)

作者： Shihua Zhou Qiang Zhang Xiaopeng Wei Key Laboratory of Advanced Design and Intelligent Computing Ministry of Education Dalian University Dalian China School of Mechanical Engineering Dalian University of Technology Dalian China

With the fast development of Internet technology and information processing technology, the image is commonly transmitted via the Internet. People enjoy the convenience and shortcut, but people have to face to the obsession that the important image information in transmission is easily intercepted by unknown persons or hackers. In order to enhance the image information security, image encryption becomes an important research direction. An image encryption algorithm based on DNA sequences for the big image is presented in this paper. The main purpose of this algorithm is to reduce the big image encryption time. This algorithm is implemented by using the natural DNA sequences as main keys. The first part is the process of pixel scrambling. The original image is confused in the light of the scrambling sequence is generated by the DNA sequence. The second part is the process of pixel replacement. The pixel gray values of the new image and the one of the three encryption templates are generated by the other DNA sequence are XORed bit-by-bit in turn. The experimental result demonstrates that the image encryption algorithm is feasible and simple. Through performance analysis, this algorithm is robust against all kinds of attacks and owns higher security.

关键词： Encryption DNA Pixel Chaos Algorithm design and analysis Correlation

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An Image Encryption Algorithm Based on DNA Self-Assembly Technology

An Image Encryption Algorithm Based on DNA Self-Assembly Tec...

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2010 IEEE International Conference on intelligent computing and intelligent Systems(2010 IEEE 智能计算与智能系统国际会议 ICIS 2010)

作者： Shihua Zhou Qiang Zhang Xiaopeng Wei School of Mechanical Engineering Dalian University of Technology Dalian P.R.China Key Laboratory of Key Laboratory of Advanced Design and Intelligent Computing (Dalian University)Ministry of Education School of Mechanical Engineering Dalian University of Technology Dalian P.R.China Key Laboratory of

DNA self-assembly that is fast developed in the fields of DNA computing and nano technology has become the focus of scientific fields. DNA self-assembly is a method that uses the characteristics of base-pair to form polyhedron or super molecular structure. This is a complex progress from disordered to ***, from simple to complicated. This paper mainly introduces that the DNA self-assembly technology is applied into the image encryption. In this paper, we proposed a complete design scheme of DNA tiles that is suitable for the image encryption. The DNA tiles mainly include five types, namely DNA tiles of the plaintext, DNA tiles of the encryption, DNA tiles of the cipertext, DNA tiles of the key and DNA tiles of the decryption. Through a simulate example, the effect of the image encryption algorithm is shown.

关键词： image encryption DNA serf-assembly technology DNA tiles

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3D mesh segmentation based on boundary strength

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Ruan Jian Xue Bao/Journal of Software 2010年第SUPPL. 1期21卷 183-193页

作者： Sun, Xiao-Peng Ji, Yan-Jie Wei, Xiao-Peng Department of Computer and Information Technology Liaoning Normal University Dalian 116029 China School of Mechanical and Engineering Dalian University of Technology Dalian 116024 China Key Laboratory of Advanced Design and Intelligent Computing Dalian University Dalian 116622 China

In this paper, we present a novel and fast algorithm for 3D meshes segmentation based on the geometric information of boundary. Firstly, according to the topological relationship of original mesh faces, we construct the dual graph, and set the weight of vertex and edge on the basis of geometric information of mesh faces. Using the k-way multilevel cutting method, we segment the dual graph quickly to obtain the pre-segmentation and initial boundary for each patch. Then we define the boundary strength function and the feature boundary of each patch, to construct a deformation contour on the patch's boundary. By minimizing the energy of the deformation contour, the initial boundary is driven to approach the feature boundary. Finally, the original mesh is segmented into several meaningful patches in accordance with the minimal rule. The experiment results suggest that our algorithm is efficient and effective, and is applicable to a variety of triangular mesh models with prominent shape features. © by Institute of Software, the Chinese Academy of Sciences.

关键词： Deformation

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The distributed maximum power point tracking method and application in the PV grid-connected generation

The distributed maximum power point tracking method and appl...

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International Conference on intelligent System Design and Engineering Application (ISDEA)

作者： Zhao, Tingting Ju, Zhenhe Wang, Hongjiang Wei, Xiaopeng Li, Xiaoxiao Shi, Zhang School of Management Dalian University of Technology Dalian China New Energy Center Shenyang Institute of Engineering Shenyang China Department of Information and Engineering Shenyang Institute of Engineering Shenyang China Key Laboratory of Advanced Design and Intelligent Computing Ministry of Education Dalian University Dalian China Department of Study Liaoning Solar Energy R and D Co. Ltd. Shenyang China Institute of Systems Engineering Northeastern University Shenyang China

ISBN: (纸本)9780769542126

In the system of the PV grid-connected generation, because of the dispersion of the PV panel, difference of the sun radiation condition and the shadow of a part of the PV panel, they will cause the serious loss of energy for the parallel PV panel. In order to overcoming energy loss and raise the efficiency of the PV system, a new maximum power point tracking method called distributed variable step duty ratio perturb method is put forward. The distributed MPPT method overcomes the shortcomings to generate electricity quantity to descend because of the dispersion of the PV panel. The variable step duty ratio perturbing method speed quickly and is more suitable for this kind of distributed generation system. The hardware adopts DC/DC electric circuit to regulate PWM duty ratio. The software adopts TMS320-2812. An example is given to show that this method is able to realize distributed MPPT. In addition, the calculation speed of the approach is quick, accuracy of the approach is better, and the system has a high stability. © 2010 IEEE.

关键词： Maximum power point trackers

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