检索结果-内蒙古大学图书馆

2014 International Conference on Computer,Network Security and Communication Engineering(CNSCE 2014)

作者： Zi-heng ZHANG Yan TIAN Kui SHAO National Key Laboratory of Science and Technology on Multi-spectral Information Processing The Department of Electronics and Information Engineering Hua Zhong University of Science and Technology

Change detection from remote sensing image is a hot topic in the field of image analysis. This paper describes an object-based change detection method from high resolution image. To obtain meaningful objects, a segmentation method based on optimal segmentation scale is discussed, and then by combing the NDVI and band ratio to obtain the difference image, the change area is detected by Adaboost algorithm finally. The efficiency of the method has been assessed by using a pair of bitemporal QuickB ird images.

关键词： High-resolution image Change detection Object-based Adaboost algorithm

来源：评论

学校读者我要写书评

暂无评论

Convergence acceleration for Lucas-Kanade algorithm via discarding Strongly Concave/Convex Areas

引用

Journal of information and Computational Science 2014年第2期11卷 433-447页

作者： Qin, Yueming Cao, Zhiguo Zhuo, Wen Yu, Zhenghong National Key Laboratory of Science and Technology on Multi-spectral Information Processing Wuhan 430074 China School of Automation Huazhong University of Science and Technology Wuhan 430074 China

Image alignment is a useful technique in many important research fields of computer vision. Among all the image alignment algorithms, Lucas-Kanade algorithm is one of the most widely used algorithms. During the past 30 years, a wide variety of extensions have been made to the original formulation and an unabridged Lucas-Kanade algorithm series has been formed. In this paper, we propose a novel method which can accelerate the convergence of Lucas-Kanade algorithm series. Based on the theory of strongly concave/convex function, we define the Strongly Concave/Convex Areas (SC/CA) of images. Through discarding the SC/CA, the iteration number of Lucas-Kanade algorithm series can be reduced without decreasing the precision. Finally, we present various experimental results that validate our method. These results also show that the proposed method is robust with the parameter used in detecting the SC/CA. Copyright © 2014 Binary information Press.

关键词： Iterative methods

来源：评论

学校读者我要写书评

暂无评论

Compressive tracking via appearance modeling based on structural local patch

Compressive tracking via appearance modeling based on struct...

引用

International Conference on Security, Pattern Analysis, and Cybernetics (SPAC)

作者： Xiaoyu Hu Hongquan Yun Delie Ming Tian Tian National Key Laboratory of Science and Technology on Multi-spectral Information Processing Huazhong University of Science and Technology Wuhan China National Key Laboratory of Science and Technology on Aerospace Intelligence Control Beijing Aerospace Automatic Control Institute Beijing China

In this paper, we propose a compressive tracking method via appearance model based on structural local patchs and improved Haar-like feature. In contrast to previous compressive tracking only considering the holistic representation, an object can be represented by local image patches with spatial layout in an object. This representation takes advantage of both partial information and spatial information of the target. Each local patch has a fixed position in the target field, and all local patches can represent the whole target. In addition, our appearance model based on features extracted from image patches, which can guarantee the randomness of the rectangular boxes and the distribution of the rectangular boxes over the entire image area, avoiding the randomness of the rectangular boxes is too strong to weak the feature expression. We sample the positive and negative samples and divide them into patchs to train a binary classification via a naive Bayes classifier with online update, then the classifier is used to discriminate the candidate samples. The candidate sample which gets the highest classify score is the target. After that we draw positive and negative samples in the same way with the candidate samples to update the classifier to get ready for next frame. Our approach helps not only locate the target more accurately but also can handle partial occlusion effectively. The proposed tracker is compared with several state-of-the-art trackers on some challenging video sequences. Our proposed tracker is better and more stable in both quantitative and qualitative comparisons.

关键词： Decision support systems Target tracking Feature extraction Erbium Laboratories Aerospace control Compressed sensing

来源：评论

学校读者我要写书评

暂无评论

Building localization from forward-looking infrared images for UAV guidance

引用

Gyroscopy and Navigation 2013年第4期4卷 188-197页

作者： Qin, Y. Cao, Zh. Li, H. Wang, X. Zhuo, W. National Key Laboratory of Science and Technology on Multi-Spectral Information Processing Wuhan China School of Automation Huazhong University of Science and Technology Wuhan China

This paper proposes a new approach to localizing a designated building from forward-looking infrared images under complex scenes, which can be used in UAV guidance. The approach makes full use of the scene information and is able to localize small or occluded buildings. The experiment results prove the algorithm efficiency. © 2013 Pleiades Publishing, Ltd.

关键词： Infrared imaging

来源：评论

学校读者我要写书评

暂无评论

A REVIEW ON ARTERY WALL SEGMENTATION TECHNIQUES AND INTIMA-MEDIA THICKNESS MEASUREMENT FOR CAROTID ULTRASOUND IMAGES

引用

Journal of Innovative Optical Health Sciences 2012年第1期5卷 75-84页

作者： XIN YANG WANJI HE KAITONG LI JIAOYING JIN XUMING ZHANG MING YUCHI MINGYUE DING State Key Laboratory for Multi-Spectral Information Processing Technologies Institute for Pattern Recognition and Artificial Intelligence(IPRAI)Huazhong University of Science and Technology Wuhan 430074HubeiChina Image Processing and Intelligence Control Key Laboratory of Education Ministry of China School of Life Science and Technology Huazhong University of Science and Technology Wuhan 430074HubeiChina

Stroke and heart attack,which could be led by a kind of cerebrovascular and cardiovascular disease named as atherosclerosis,would seriously cause human morbidity and *** is important for the early stage diagnosis and monitoring medical intervention of the *** stenosis is a classical atherosclerotic lesion with vessel wall narrowing down and accumulating plaques *** carotid artery of intima-media thickness(IMT)is a key indicator to the *** the development of computer assisted diagnosis technology,the imaging techniques,segmentation algorithms,measurement methods,and evaluation tools have made considerable *** imaging,being real-time,economic,reliable,and safe,now seems to become a standard in vascular assessment methodology especially for the measurement of *** review firstly attempts to discuss the clinical relevance of measurements in clinical practice at first,and then followed by the challenges that one has to face when approaching the segmentation of ultrasound ***,the commonly used methods for the IMT segmentation and measurement are ***,discussion and evaluation of different segmentation techniques are *** overview of summary and future perspectives is given finally.

关键词： Ultrasound(US)images carotid artery intima-media thickness(IMT) atherosclerosis image segmentation computer assisted diagnosis(CAD)

来源：评论

学校读者我要写书评

暂无评论

VLSI architecture for real-time cloud detection in optical remote sensing image

引用

2nd World Congress on Computer Science and information Engineering, CSIE 2011

作者： Liang, Chaobing Sang, Hongshi National Key Laboratory of Science and Technology on Multi-Spectral Information Processing Huazhong University of Science and Technology Wuhan China

ISBN: (纸本)9783642257681

Remote sensing satellites with higher resolution and more spectral bands have posed great challenges to onboard storage and downlink bandwidth capacities. Data compression is a reasonable way to deal with these challenges. Cloud detection is useful for data compression algorithms to discard regions covered by cloud in an effort to improve compression ratio. VLSI architecture for real-time cloud detection based on pixel screening and region discrimination is proposed in this essay. Pixel screening based on local statistical characteristics and binary morphological filtering is implemented by pipeline of depth 30. Equivalence sorting and regional feature extraction are performed at the same time, which avoids second scan of the original image and shortens output latency. Provisional labeled image is run-length encoded to reduce memory requirement. The design is synthesized and mapped to SMIC 0.18 um CMOS technology, resulting in clock frequency higher than 100 MHz. Simulation shows that this design fulfills real-time cloud detection requirement with reasonable performance. © Springer-Verlag Berlin Heidelberg 2012.

关键词： Pixels

来源：评论

学校读者我要写书评

暂无评论

Image matching based on analysis of reliability in Log-Polar field

引用

2012 2nd International Conference on Materials Science and information technology, MSIT 2012

作者： Xu, Yiping Tan, Jing Li, Hongping Tian, Yan Department of Electronics and Information Engineering Huazhong University of Science and Technology Wuhan 430074 China National Key Laboratory of Science and Technology on Multi-spectral Information Processing Wuhan 430074 China

ISBN: (纸本)9783037854389

Due to the invariance to scale and rotation, image matching method based on Log-Polar transformation has been extensively applied in target detection and location. This paper analyses the effect on image matching accuracy from variation of scale and rotation, and proposes a modified image matching method based on analysis of data reliability for matching, this method can eliminate the interference from invalid data and improve the image matching performance. Experiments show that this method has better performance in accuracy. © (2012) Trans Tech Publications, Switzerland.

关键词： Image matching

来源：评论

学校读者我要写书评

暂无评论

Density compensation to reference map of gravity navigation

Density compensation to reference map of gravity navigation

引用

2012 International Conference on Modelling, Identification and Control, ICMIC 2012

作者： Ma, Jie Yang, Fan Yan, Zu Xiong, Ling National Key Laboratory of Science and Technology on Multi-spectral Information Processing Huazhong University of Science and Technology Wuhan China College of Information Science and Engineering Wuhan University of Science and Technology Wuhan China

ISBN: (纸本)9780956715715

The current method of gravity gradient maps modeling is based on digital elevation model, the effects of isostasy in gravity gradient map modeling are researched and analyzed in this paper, and a novel method of modeling gravity gradient maps was presented. The current isostasy theory shows that the density of crust changes with elevation, so assigning a constant value to terrain's density is not accurate enough. At first, two kinds of isostasy model are analyzed, and on the basis of isostasy model, the gravity gradient map is modeled by using improved terrain density model. Then experimental results shows that Pratt model impose much more effects on gravity gradient map than Airy model. Consider the two models' effects in gravity gradient map modeling, Pratt Model has a great performance in the sea area, and Airy Model can be ignored the impact in the land area. © 2012 Huazhong Univ of Sci & Tec.

关键词： Digital instruments

来源：评论

学校读者我要写书评

暂无评论

Detection of river in SAR images

Detection of river in SAR images

引用

8th International Conference on information Science and Digital Content technology, ICIDT 2012

作者： Hu, Huozhen Dai, Guangming Wang, Maocai Peng, Yi Department of Computer Science China University of Geosciences CUG Wuhan Hubei China National Key Laboratory of Science and Technology on Multi-spectral Information Processing Huazhong University of Science and Technology HUST Wuhan Hubei China

ISBN: (纸本)9788988678695

A method of river detection for SAR images is put forward by this paper. It uses kernelized fuzzy c-means (KFCM) algorithm to realize initial segmentation of river in original SAR images. It utilizes mathematical morphology filtering. It removes false alarm targets and retains geometric features of images. In order to further remove the false alarm targets, we use a criterion of the water body. Experimental result indicates that the algorithm can detect river effectively, and so, has significant practical value. © 2012 AICIT.

关键词： Synthetic aperture radar

来源：评论

学校读者我要写书评

暂无评论

An improved method of identification based on thermal palm vein image 1

引用

19th International Conference on Neural information processing, ICONIP 2012

作者： Wang, Ran Wang, Guoyou Chen, Zhong Liu, Jianguo Shi, Yu National Key Laboratory of Science and Technology on Multi-spectral Information Processing Institute for Pattern Recognition and Artificial Intelligence Huazhong University of Science and Technology 1037 Luoyu Road Hongshan District 430074 Wuhan Hubei Province China

ISBN: (数字)9783642344817

ISBN: (纸本)9783642344800

Biological characteristics based on face, fingerprint and iris images have been extensively studied and used for the identification in the past few decades. As a new-born method, thermal palm vein pattern is gathering more and more attention all over the world. An improved method of identification based on thermal palm vein image is presented in the paper. Five steps are needed to have a person verified: 1) acquisition of infrared palm vein image;2) detection of ROI (region of interest);3) enhancement of the palm vein image;4) features extraction of the palm vein patterns;5) matching the features between the real palm vein and sample data. Experiments have been carried out on 178 different images and 176 images of them are correctly recognized with two in failure. Experiments show the detection rate is satisfied. © 2012 Springer-Verlag.

关键词： Image enhancement

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：