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Image stylization with enhanced structure on GPU

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Science china(Information Sciences) 2012年第5期55卷 1093-1105页

作者： LI Ping 1,SUN HanQiu 1,SHENG Bin 1,2 & SHEN JianBing 3 1 Department of computer Science and Engineering,The Chinese university of Hong Kong,Hong Kong,china 2 Department of computer Science and Engineering,Shanghai Jiao Tong university,Shanghai 200240,china 3 school of computer Science and technology,Beijing Institute of technology,Beijing 100081,china 1. Department of computer Science and Engineering The Chinese University of Hong Kong Hong Kong China2. Department of Computer Science and Engineering Shanghai Jiao Tong University Shanghai 200240 China3. School of Computer Science and Technology Beijing Institute of Technology Beijing 100081 China

This paper presents a graphics processing unit (GPU) based stylization approach that preserves the fine structure between the original and the stylized images using gradient *** abstraction and painterly stylization methods focused on contrast manipulation only,and thus the detailed salient structures of the input images are always destroyed when performing the current stylization techniques because of limitations like unavoidable salience information loss caused by contrast *** propose an image structure map to naturally model the fine structure existing in the original ***-based structure tangent generation and tangent-guided image morphology are used to construct the structure *** image structure map,unlike an edge map,not only systematically models the boundary information within the imagery but also accentuates the underlying inner structure detail for further *** facilitate the final stylization via parallel bilateral grid and structure-aware stylizing optimization on a GPU-CUDA platform in real *** multiple experiments,the proposed method consistently demonstrates efficient and high quality image stylization performance.

关键词： image stylization non-photorealistic rendering real-time processing GPU image abstraction

A fast algorithm for color image enhancement with total variation regularization

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Science china(Information Sciences) 2010年第9期53卷 1913-1916页

作者： LI Ming1,2 1school of computer Science and technology,Huazhong university of Science and technology,Wuhan 430074,china 2Key Laboratory of Education Ministry for Image Processing and Intelligent Control,Wuhan 430074,china 1. school of computer Science and technology Huazhong University of Science and Technology Wuhan 430074 China2. Key Laboratory of Education Ministry for Image Processing and Intelligent Control Wuhan 430074 China

In this paper,a novel algorithm for color image enhancement is *** proposed method,which is based on Retinex theory and total variational framework,improves the original variational method by using a TV penalty term to force spatial smoothness on the reflectance *** split Bregman algorithm is employed to solve the proposed *** practical experiments,it is verified that our method obtains better enhancement performance and much better calculation efficiency.

关键词： color image enhancement Retinex theory total variational model split Bregman algorithm

Radiance-based color calibration for image-based modeling with multiple cameras

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Science china(Information Sciences) 2012年第7期55卷 1509-1519页

作者： ZHAO Xu 1,2 ,ZHOU Zhong 1,2 & WU Wei 1,2 1 State Key Laboratory of Virtual Reality technology and Systems,Beihang university,Beijing 100191,china 2 school of computer Science and Engineering,Beihang university,Beijing 100191,china 1. State Key Laboratory of Virtual Reality technology and Systems Beihang University Beijing 100191 China2. School of Computer Science and Engineering Beihang University Beijing 100191 China

Photo-consistency estimation is an important part for many image-based modeling *** paper presents a novel radiance-based color calibration method to reduce the uncertainty of photo-consistency estimation across multiple *** idea behind our method is to convert colors into a uniform radiometric color space in which multiple image data are *** results demonstrate that our method can achieve comparable color calibration effect without adjusting camera parameters and is more robust than other existing ***,we obtain an auto-determined threshold for photo-consistency check,which will lead to a better performance than existing photo-consistency based reconstruction algorithms.

关键词： color calibration photo-consistency estimation multi-camera system image-based modeling

Image denoising and deblurring: non-convex regularization, inverse diffusion and shock filter

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Science china(Information Sciences) 2011年第6期54卷 1184-1198页

作者： FU ShuJun 1,2,3 , ZHANG CaiMing 2 & TAI XueCheng 3,4 1 school of Mathematics, Shandong university, Jinan 250100, china 2 school of computer Science and technology, Shandong university, Jinan 250101, china 3 school of Physical and Mathematical Sciences, Nanyang Technological university, Singapore 639798, Singapore 4 Department of Mathematics, university of Bergen, Bergen 5008, Norway 1. school of Mathematics Shandong University Jinan 250100 China2. School of Computer Science and Technology Shandong University Jinan 250101 China3. School of Physical and Mathematical Sciences Nanyang Technological University Singapore 639798 Singapore4. Department of Mathematics University of Bergen Bergen 5008 Norway

A large number of applications in image processing and computer vision depend on image quality. In this paper, main concerns are image denoising and deblurring simultaneously in a restoration task by three types of methodologies: non-convex regularization, inverse diffusion and shock filter. We discuss their relations in the context of image deblurring: the inverse diffusion implied by the non-convex regularization, and the superior ability of deblurring edge of the shock filter to that of the inverse diffusion, both in 1D and 2D cases. Finally, we propose a region-based adaptive anisotropic diffusion with shock filter method, which shows advantages of deblurring edges, denoising and smoothing contours in experiments, compared with some related methods. Therein an idea of "divide and rule" is introduced.

关键词： image denoising image deblurring non-convex regularization inverse diffusion shock filter adaptive anisotropic diffusion

An unconstrained optimization method using nonmonotone second order Goldstein's line search

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Science china Mathematics 2007年第10期50卷 1389-1400页

作者： Wen-yu SUN~(1+) Qun-yan ZHOU~(1,2) ~1 school of Mathematics and computer Science,Nanjing Normal university,Nanjing 210097,china ~2 Department of Basic Courses,Jiangsu Teachers university of technology,Changzhou 213001,china 1. school of Mathematics and computer Science Nanjing Normal University Nanjing 210097 China 2. Department of Basic Courses Jiangsu Teachers University of Technology Changzhou 213001 China

In this paper, an unconstrained optimization method using the nonmonotone second order Goldstein's line search is proposed. By using the negative curvature information from the Hessian,the sequence generated is shown to converge to a stationary point with the second order optimality conditions. Numerical tests on a set of standard test problems confirm the efficiency of our new method.

关键词： nonmonotone method, direction of negative curvature, line search, descent pair,unconstrained optimization

Evaluating Mission-Oriented Network Reliability via Simulation Test

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Evaluating Mission-Oriented Network Reliability via Simulati...

Multispectral image fusion method based on intensity-hue-saturation and nonsubsampled three-channels non-separable wavelets

2012 national Conference on Information technology and computer Science

作者： Mo Chen Department of Management national university of defense technology changsha,Hunan 410073,china Yuejin Tan Department of Management national university of defense technology changsha,Hunan 410073,china Hongzhong Deng Department of Management national university of defense technology changsha,Hunan 410073,china

This paper proposed a simulated test method for evaluating mission-oriented network *** first defined the mission-network model and entity-capability ***,to test the mission-oriented network reliability,we employed a three-layer network,including mission-layer,sampling-layer and *** nodes were sampled from physical-layer based on the entity capability model while link were mapped from mission-layer based on the mission network *** investigate the effect of this testing method,we chose different entity-capability models to evaluate mission-oriented network reliability of a combat *** simulation result showed that entity-capabilities played an important role in missionoriented network reliability and the simulation test method could be used as an effective means for mission-oriented network reliability evaluating.

关键词： network system simulation test mission-oriented reliability

来源： cnki会议评论

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Chinese Optics Letters 2010年第4期8卷 384-387页

作者：刘斌刘维杰彭嘉雄 school of Mathematics and computer Science Hubei university computer school Wuhan University Institute of Image Recognition and Artificial Intelligence Huazhong University of Science and Technology

A new multispectral image fusion method based on intensity-hue-saturation（IHS） transform and threechannel non-separable wavelets whose dilation matrix is[2,1;1,1]is *** multi-resolution decompositions of the intensity of multispectral image and panchromatic image are performed in nonsubsampled mode using the three-channel non-separable wavelet filter *** approximation images and the detail images of the multi-resolution pyramids are *** experimental results show that this method has good visual *** performance outperforms the IHS fusion *** discrete wavelet transform （DWT） fusion method,and the IHS-DWT fusion method in preserving spectral quality and high spatial resolution information.

关键词： Decomposition Discrete wavelet transforms Filter banks Visual communication

Spray and forward:Efficient routing based on the Markov location prediction model for DTNs

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Science china(Information Sciences) 2012年第2期55卷 433-440页

作者： DANG Fei1,YANG XiaoLong1,2 & LONG KePing2 1 Research Center for Optical Internet and Mobile Information Networks(COIMIN),university of Electronic Science and technology of china,Chengdu 611731,china 2 school of computer and Communications Engineering,university of Science and technology Beijing,Beijing 100083,china 1. Research Center for Optical Internet and Mobile Information Networks (COIMIN) University of Electronic Science and Technology of China Chengdu 611731 China2. School of Computer and Communications Engineering University of Science and Technology Beijing Beijing 100083 China

Typical delay tolerant networks(DTNs)often suffer from long and variable delays,frequent connectivity disruptions,and high bit error *** DTNs,the design of an efficient routing algorithm is one of the key *** existing methods improve the accessibility probability of the data transmission by transmitting many copies of the packet to the network,but they may cause a high network *** address the tradeoff between a successful delivery ratio and the network overhead,we propose a DTN routing algorithm based on the Markov location prediction model,called the spray and forward routing algorithm(SFR).Based on historical information of the nodes,the algorithm uses the second-order Markov forecasting mechanism to predict the location of the destination node,and then forwards the data by greedy routing,which reduces the copies of packets by spraying the packets in a particular *** contrast to a fixed mode where a successful-delivery ratio and routing overhead are contradictory,a hybrid strategy with multi-copy forwarding is able to reduce the copies of the packets efficiently and at the same time maintain an acceptable successful-delivery *** simulation results show that the proposed SFR is efficient enough to provide better network performance than the spray and wait routing algorithm,in scenarios with sparse node density and fast mobility of the nodes.

关键词： delay tolerant networks spray and forward Markov position prediction routing algorithm

The Method of Mission Oriented Maintenance

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International Journal of Plant Engineering and Management 2002年第2期7卷 76-81页

作者： WANG Guang-wei, ZHANG Xin-bin, GUO BoManagement school, national university of defense technology,changsha 410073, P. R. china Management school National University of Defense Technology Changsha 410073 P. R. China

In a real application , equipment in good condition sometimes have to be repaired because the equipment does not satisfy the requirements of the mission; However, it is not necessary to repair some equipment with failures because the failures do not affect the mission completion. In these cases, maintenance activity guided by present maintenance methods may sometimes affect the mission completion in time or bring about extra maintenance. To overcome the shortage of present maintenance methods, we propose an idea and method of mission oriented maintenance (MOM) to deal with the maintenance policy on these kinds of problems. This method can work out different maintenance policies corresponding to different missions with full consideration of missions and mission requirements for the equipment.

关键词： mission oriented maintenance maintenance policy,