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Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)

作者： Jian Zhou Huazhong Shu Ting Xia Limin Luo Lab of Image Science and Technology Department of Biological Science and Medical Engineering South-East University Nanjing China

In positron emission tomography (PET) image reconstruction, regularization methods are usually considered to suppress noise effects in reconstructed images. In this paper, we model this reconstruction problem in a new variational framework where the Mumford-Shah (MS) regularization coupled with recently developed L 1 data fidelity term is adapted. In order to simplify the numerical computation, Ambrosio and Tortorelli's Gamma-convergence approximation is also employed to substitute the irregular parts (edge set) of MS functionals with the auxiliary smooth function. In numerical studies we compare our method with the "conventional" penalized least-square (PLS) algorithm with local nonquadratic Huber penalty. Results show both the feasibility and efficiency of the proposed algorithm

关键词： Positron emission tomography image reconstruction Active contours image segmentation Robustness Inverse problems Biomedical imaging Biomedical engineering Engineering in medicine and biology Data engineering

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A smart remote controller for free viewpoint generation of the future 3D TV

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Proceedings of SPIE - The International Society for Optical Engineering 2006年 6392卷

作者： Park, Min-Chul Kim, Sung Kyu Son, Jung-Young Systems Technology Division Korea Institute of Science and Technology Seoul Korea Republic of Whole Image Lab. Hanyang University Seoul Korea Republic of

ISBN: (纸本)0819464902;9780819464903

There have been many researches on multi-view image processing for free viewpoint image generation. However, most of the previous studies focused on the way to generate free viewpoint images with a sense of naturalness considering simplicity of computation and real time processing. One of the merits of the free viewpoint TV is to generate some images that correspond to the user's viewpoint. In this paper, we present a smart remote controller to enjoy a future 3D TV. The proposed controller is smart in that it provides the users with some candidate viewpoints and they are automatically computed based on the theory of human visual attention. The candidate viewpoints are generated from the analysis of an input image by human visual attention model.

关键词： Remote control

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A SUPPORT VALUE TRANSFORM-BASED MULTI FOCUS image FUSION METHOD

A SUPPORT VALUE TRANSFORM-BASED MULTI FOCUS IMAGE FUSION MET...

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2006 8th International Conference on Signal Processing

作者： Sheng ZHENG Jian Liu Guangxi Zhu Jinwen Tian College of Electrical Engineering & Information Technology China Three Gorges University Electronic & Information Engineering Department Huazhong University of Science and Technology(HUST) State Edu Commission Key Lab for Image Processing & Intelligent Control HUST Chinese Key lab of optic & electronics HUST State Edu Commission Key Lab for Image Processing & Intelligent Control

＜正＞The image fusion is an important approach to produce a single complete image which preserves all relevant information from different *** this paper,we proposed a support value transform-based multi focus image fusion method,where the fused saliency features are represented by support values. Based on the mapped least squares support vector machine,the support value transform is developed as a multi-scale analysis *** fusing results on the multi focus images demonstrate that the proposed image fusion method is effective and efficient.

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A Combining Method for Tumors Detection from Near-infrared Breast Imaging

A Combining Method for Tumors Detection from Near-infrared B...

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Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)

作者： Zhicheng Wang Jian Liu Jinwen Tian Zeping Xie State Education Commission Key Laboratory for Image Processing and Intelligent Control Institute for Pattern Recognition and Artificial Intelligence Huazhong Univ. of Sci. & Tech. Wuhan 430074 China Key Lab. for Image Process. & Intelligent Control State Educ. Comm. School of Life Science & Technology Huazhong University of Science and Technology Wuhan China

This paper introduces the new qualitative and quantitative methods, which can diagnose breast tumors. Qualitative methods include blood vessel display inside and outside of pathological changes part of breast, display of equivalent pixel curves at the part of pathological changes and display of breast tumor image edge. Accordingly, three feature extraction operators are proposed, i.e. the combination operators of anisotropic gradient and smoothing operator, an improved Sobel operator and an edge sharpening operator. Furthermore, quantitative diagnostic approaches are discussed based on blood and oxygen contents according to abundant clinical data and pathological mechanism of breast tumors. The results of clinic show that the methods of combining qualitative and quantitative diagnose are effective for breast tumor images, especially for early and potential breast cancer

关键词： Breast tumors Displays Pathology Blood vessels Biomedical imaging Pixel Feature extraction Anisotropic magnetoresistance Smoothing methods Breast cancer

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ROAD CENTRAL CONTOUR EXTRACTION FROM HIGH RESOLUTION SATELLITE image USING TENSOR VOTING FRAMEWORK

ROAD CENTRAL CONTOUR EXTRACTION FROM HIGH RESOLUTION SATELLI...

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2006 International Conference on Machine Learning and Cybernetics(IEEE第五届机器学习与控制论坛)

作者： SHENG ZHENG JIAN LIU WEN-ZHONG SHI GUANG-XI ZHU Electronic & Information Engineering Dept. Huazhong University of Science and Technology Wuhan 430 State Education Commission Key Laboratory for Image Processing and Intelligent Control Inst.for Pat Advanced Research Center for Spatial Information Technology Department of Land Surveying and Geo-In Chinese Key lab of optic & electronics Huazhong University of Science and Technology Wuhan 430074

In this paper, a unique road contour extraction approach from high resolution satellite image is proposed, in which the road contour was extracted in two steps. Firstly, support vector machines (SVM) was employed merely to classify the image into two groups of categories: a road group and a non-road group. The identified road group images are the discrete and irregularly distributed sampled points, and they are an uncompleted data set for the road. Secondly, the road contour was extracted from the road group images using the tensor voting framework, since the tensor voting technique is superior to the traditional methods in extracting the geometrical structure from the uncompleted data set. The experimental results on the high resolution satellite image demonstrate that the proposed approach worked well with images comprised by both rural and urban area features.

关键词： Tensor voting framework Road central line extraction High-resolution satellite image

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A weighted least squares reconstruction method for PET data using nonlinear anisotropic diffusion regularization

A weighted least squares reconstruction method for PET data ...

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2005 27th Annual International Conference of the Engineering in Medicine and Biology Society, IEEE-EMBS 2005

作者： Hongqing, Zhu Huazhong, Shu Ting, Xia Limin, Luo Lab. of Image Science and Technology Southeast University 210096 Nanjing China

ISBN: (纸本)0780387406

Due to the inherent ill-posedness of PET image reconstruction, the reconstructed images will have noise and edge artifacts. A roughness penalty is often imposed on the solution to control noise. In this paper, we propose a new weighted least squares (WLS) image reconstruction method for PET based on nonlinear anisotropic diffusion (AD) regularization. The use of AD is because it is extremely effective for reducing noise in 2D images while preserving edges. The weighted factor is used to balance data consistency and regularization terms. The application of the proposed approach to simulated and real PET emission data show that it more effective than the common WLS algorithm, especially for noisy projection data. © 2005 IEEE.

关键词： image reconstruction

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PET image reconstruction using Mumford-Shah regularization coupled with L1 data fitting

PET image reconstruction using Mumford-Shah regularization c...

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2005 27th Annual International Conference of the Engineering in Medicine and Biology Society, IEEE-EMBS 2005

作者： Jian, Zhou Huazhong, Shu Ting, Xia Limin, Luo Lab. of Image Science and Technology Department of Biological Science and Medical Engineering Southeast University Nanjing 210096 China

ISBN: (纸本)0780387406

In positron emission tomography (PET) image reconstruction, regularization methods are usually considered to suppress noise effects in reconstructed images. In this paper, we model this reconstruction problem in a new variational framework where the Mumford-Shah (MS) regularization coupled with recently developed L1 data fidelity term is adapted. In order to simplify the numerical computation, Ambrosio and Tortorelli's Γ-convergence approximation is also employed to substitute the irregular parts (edge set) of MS functional with the auxiliary smooth function. In numerical studies we compare our method with the "conventional" penalized LeastSquare (PLS) algorithm with local nonquadratic Huber penalty. Results show both the feasibility and efficiency of the proposed algorithm. © 2005 IEEE.

关键词： image reconstruction

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A Multi-homed VPN Architecture Based on Extended SOCKS+TLS Protocols

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Journal of Shanghai Jiaotong university(science) 2005年第3期10卷 250-255页

作者：张宝良胡汉平陈翔 State Education Ministry Key Lab. of Image Information & Intelligent Control In st. of Pattern Recognition & Artificial Intelligence Huazhong Univ. of Science & Technology Wuhan 430074 China

A multi-homed VPN architecture based on extended SOCKSv5 and TLS was proposed. The architecture employs a dynamic connection mechanism for multiple proxies in the end system,i n which the security-demanded transmission connections can switch smoothly among the multiple proxies by maint aining a coherent connection *** mechanism is transparent to application programs and can support th e building of *** the cooperation of some other security components,the mechanism guarantees the reso urce availability and reliability of the end system against some attacks to the specific ports or hosts.

关键词： multi-homed SOCKSv5 security connection context virtual private network （VPN）

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An efficient detect model for crosstalk faults on SOC interconnects

An efficient detect model for crosstalk faults on SOC interc...

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MIPPR 2005: SAR and Multispectral image Processing

作者： Zhang, Jinlin Chen, Chaoyang Shen, Xubang Institute of Image Recognition and Artificial Intelligence Key LAB of Ministry of Education HuaZhong University of Science and Technology Wuhan 430074 China Xi'An Microelectronic Technology Institute Xi'an 710054 China

As System-on-Chip (SOC) manufacture technology moves into ultra deep sub-micron (DSM) ear, Crosstalk faults between SoC interconnect result in improper function of the chip. This problem is becoming more and more severe. Based on the in-depth research of the property of crosstalk fault and the MAF model, we presented a simple and efficient model - the Search-Based Maximal Aggressor Fault (SB-MAF) for detecting glitch and delay faujts caused by crosstalk effects on interconnects between components of a SOC. The respective efficiency of the presented model and the MAF model is given in the paper. The results of simulation show that two models' efficiency is comparable when crosstalk is weak. However, the efficiency of the SB-MAF model is obviously improved compare to the MAP model when there are strong crosstalk effects between SoC interconnects.

关键词： Integrated circuit layout

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Fast algorithm of discrete Walsta-Haar transformation

Fast algorithm of discrete Walsta-Haar transformation

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International Conference on Space Information technology

作者： Lu, Li Shi, Baochang Tian, Jinwen Liu, Jian State Education Commission Key Lab for Image Processing and Intelligent Control Huazhong University of Science and Technology Wuhan Hubei 430074 China Inst. for Pattern Recognition and Artificial Intelligence Huazhong University of Science and Technology Wuhan Hubei 430074 China Department of Mathematics Huazhong University of Science and Technology Wuhan Hubei 430074 China

Walsh-Haar function system that was first intruoduced by us is a new kind of function systems, and has a good global/local property. This function system is called Walsh ordering function system since its generation kernel functions belong to Walsh ordering Walsh function system. We worked out a recursive property of the matrix WHKRm+1 corresponding to the first KR m+1 Walsh-Haar functions in Walsh-Haar function system, and we also proved that Walsh-Haar function system is perfect and orthogonal similar to Walsh function system and Haar function system. Thus, discrete Walsh-Haar transformation (DW-HT) is an orthogonal transformation that can be widely used in signal processing. In this paper, using the recursive property of the matrix WHKRm+1 and the fast algorithm of discrete Walsh transformation (DWT) in Walsh ordering, we have designed a fast algorithm of Walsh ordering DW-HT based on the bisection technique. The idea and method used in this paper can be used for designing fast algorithms of other ordering DW-HTs and other discrete orthogonal transformations.

关键词： Mathematical transformations

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