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检索条件"任意字段=Image Processing: Algorithms and Systems XIV 2016"

共 1046 条记录，以下是541-550 订阅

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Dtic Adp000102: Understanding Features, Objects, and Backgrounds

引用

2016年

Dtic Adp000102: Understanding Features, Objects, and Backgrounds by Defense Technical Information Center; published by

关键词： image processing adp000102: algorithms backgrounds computer applications davis, larry s digital simulation dtic archive features, forward looking infrared systems histograms infrared images maryland univ college park computer vision lab night vision objects, optical images preprocessing rosenfeld, azriel texture understanding workshops

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NASA Technical Reports Server (Ntrs) 19850014758: New Atmospheric Sensor Analysis Study

引用

2016年

NASA Technical Reports Server (Ntrs) 19850014758: New Atmospheric Sensor Analysis Study by NASA Technical Reports Server (Ntrs); NASA Technical Reports Server (Ntrs); published by

关键词： (ntrs) 19850014758: algorithms analysis atmospheric atmospheric models computer programs data base management systems image processing mathematical models nasa technical reports server (ntrs) parker, k. g. reports sensors weather forecasting

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Dtic Ada023633: image Analysis and Modeling

引用

2016年

[Auto Generated] RESEARCH SUMMARY AND OVERVIEW 2 PROJECT REPORTS I. image SEGMENTATION 1. image Decomposition 7 by T. 5. Huang and J. W. Burnett 2. Digital Edge Restoration in Linearly Filtered images 12 by D. P. Panda and A. C. Kak 3. image Segmentation by Unsupervised Clustering III 2k by M. Y. Yoo and T. S. Huang **. Texture Boundary Detection 27 by 0. R. Mitchell and W. K. Chan I I. image ATTRIBUTES 5. Max-Min Measure for image Texture Analysis 29 by 0. R. Mitchell and W. A. Boyne III. PATTE

关键词： image processing pattern recognition ada023633: algorithms analysis coding data processing digital systems dtic archive huang, t s image military applications modeling models preprocessing purdue univ lafayette in school of electrical engineering segmented texture wintz, paul a

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Design and Manufacturing of a Low-Cost 2-DOF Autonomous Sentry Gun 2

Design and Manufacturing of a Low-Cost 2-DOF Autonomous Sent...

引用

2nd International Conference on Robotics and Artificial Intelligence (ICRAI)

作者： Ahmad, Husnain Ali, Syed Mohsin Sheikh, Usman Ayub Murtaza, Zain Rizwan, Muhammad Natl Univ Sci & Technol Dept Robot & Artificial Intelligence Sect H-12 Islamabad 44000 Pakistan Harbin Inst Technol Automat Test & Control Inst Elect & Automat Dept Harbin Peoples R China

ISBN: (纸本)9781509040599

In this paper, design and development of a selfsufficient sentry robotic gun is presented. Professional robotic assemblies which are generally developed for security purposes are targeted toward high efficiency and are based on extensive control algorithms. This makes them quite expensive and infeasible for low budget applications. One important component of such systems is that of motion detection. Motion detection also plays a key role in security applications installed at banks, offices and vulnerable areas. An efficient motion detection system has been developed using embedded micro-controller and MATLAB interface. The proposed system can also be set into an autonomous mode of operation, in which the system tracks and engages targets without any human intervention. Aside from autonomous mode, there is also a manual over-ride mode. The hardware employed in the proposed system is based on easily accessible materials. Motion detection and image processing was implemented using MATLAB image processing toolbox and periodic background estimation subtraction was used for the detection of motion.

关键词： periodic background estimation subtraction security solution 2-DOF sentry manipulator MATLAB image processing tool box

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Robust Text Detection and Recognition in Blurred images

Robust Text Detection and Recognition in Blurred Images

引用

International Conference On Soft Computing systems (ICSCS)

作者： George, Sonia Jagadeesh, Noopa Mahatma Gandhi Univ Fed Inst Sci & Technol Comp Sci & Engn Angamaly Kerala India

ISBN: (纸本)9788132226710;9788132226697

In this paper, we propose a novel method for detecting and recognizing the text from the blurred images. Text detection in natural scenery images is an important issue in the processing stage. All the previously proposed methods use different algorithms to detect text in images;however, they suffer from poor performance while performing detection in blurred images. The proposed algorithm is capable of removing blur with an iterative deconvolution method and a linear invariant filter. The proposed method can achieve detection and recognition of the text with a time complexity of 4.53 s. Experiments show our method achieves a better text detection than the other existing methods.

关键词： Text detection Text recognition image deblurring Text segmentation

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Defect Inspection in Hot Slab Surface: Multi-source CCD Imaging Based Fuzzy-Rough Sets Method 39

Defect Inspection in Hot Slab Surface: Multi-source CCD Imag...

引用

Conference on Applications of Digital image processing XXXIX

作者： Zhao, Liming Zhang, Yi Xu, Xiaodong Xiao, Hong Huang, Chao Chongqing Univ Posts & Telecommun Res Ctr Intelligent Syst & Robot Chongqing 400065 Peoples R China

ISBN: (数字)9781510603349

ISBN: (纸本)9781510603332;9781510603349

To provide an accurate surface defects inspection method and make the automation of robust image region of interests(ROI) delineation strategy a reality in production line, a multi-source CCD imaging based fuzzy-rough sets method is proposed for hot slab surface quality assessment. The applicability of the presented method and the devised system are mainly tied to the surface quality inspection for strip, billet and slab surface etcetera. In this work we take into account the complementary advantages in two common machine vision (MV) systems(line array CCD traditional scanning imaging (LS-imaging) and area array CCD laser three-dimensional (3D) scanning imaging (AL-imaging)), and through establishing the model of fuzzy-rough sets in the detection system the seeds for relative fuzzy connectedness(RFC) delineation for ROI can placed adaptively, which introduces the upper and lower approximation sets for RIO definition, and by which the boundary region can be delineated by RFC region competitive classification mechanism. For the first time, a Multi-source CCD imaging based fuzzy-rough sets strategy is attempted for CC-slab surface defects inspection that allows an automatic way of AI algorithms and powerful ROI delineation strategies to be applied to the MV inspection field.

关键词： continuous casting surface defect 3D laser scanning imaging processing fuzzy-rough sets

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Context-based fusion and enrichment by adapted coefficients for image enhancement purposes 15

Context-based fusion and enrichment by adapted coefficients ...

引用

15th International Conference on Electronics, Information, and Communications, ICEIC 2016

作者： Sang, Nguyen Thanh Van An, Huynh Van The My, Nguyen Lung, Vu Duc Faculty of Computer Engineering University of Information Technology VNU-HCM Ho Chi Minh city Viet Nam

ISBN: (纸本)9781467380164

This paper proposes an efficient method to improve image quality based on Context-based enhancement techniques, particularly towards real-time applications in dedicated hardware systems. The main idea is that all the important information of a low-quality an image are combined with a high-quality daytime background image at the same scene to output an image with improved quality, and thus main objects of the low-quality input images can be recognized more easily. In comparison, almost all current context-based enhancement techniques have processed with complex algorithms, thereby being time-consuming and hard to perform in real-time processing when applying into high-resolution images/videos. The developed technique here outperforms these original methods, which is demonstrated by without complex formulas (such as DST and IDST), whereas not only still keeping all the important information of the low-quality nighttime input images, but also limiting problems often existing in context fusion techniques, such as ghosting, haloing and artifact effects. The experimental results demonstrate that our approach has been efficient and gained a better quality of output images in comparison with the results of the Denighting method [8]. © 2016 IEEE.

关键词： image fusion

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Graph-based image restoration. 1

Graph-based image restoration. 1

引用

作者： Kheradmand, Amin. University of California Santa Cruz.bElectrical Engineering.

学位级别：Ph.D.

Digital photography has experienced great progress during the past decade. A lot of people are recording their moments via digital hand-held cameras. Pictures taken with digital cameras usually undergo some sort of degradation in the form of noise/blur depending on the camera hardware and environmental conditions in which the photos are taken. This leads to an ever-increasing demand for effective and efficient image enhancement algorithms to achieve high quality output images in digital photography systems. In this dissertation, a new graph-based framework is introduced for different image restoration applications. This framework is based on exploiting the existing self-similarity in images. We introduce a new definition of normalized graph Laplacian matrix for image processing. We use this new definition to develop effective enhancement algorithms for image deblurring, image denoising, and image sharpening. First, we develop a regularization framework for image deblurring by constructing a new graph-based cost function. Minimizing the corresponding cost function yields effective outputs for different blur types including out-of-focus and motion blurs. Our proposed deblurring algorithm based on the new definition of normalized graph Laplacian provides performance and analysis advantages over previous methods. We have shown its effectiveness for several synthetic and real deblurring examples. Second, we develop a new graph-based framework for image denoising. The proposed denoising method exploits the similarity information in images by constructing the similarity matrix which in turn is used to derive the corresponding graph Laplacian. A graph-based objective function with new data fidelity and smoothness terms is constructed and minimized. We also establish the relationship between our proposed regularized framework and two well-known iterative methods for improving the performance of kernel-based denoising methods； namely, diffusion and boosting iterations. We com

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DISCRETE FRAMES AND TIGHT FRAMES FOR SPARSE image REPRESENTATION

DISCRETE FRAMES AND TIGHT FRAMES FOR SPARSE IMAGE REPRESENTA...

引用

作者： YUFEI ZHAO NATIONAL UNIVERSITY OF SINGAPORE

学位级别：博士

In recent years, sparse approximation has played a fundamental role in many signal processing areas. The sparsity-induced regularization methods for image recovery are implemented based on the assumption that the underlying images can be sparsely approximated under the given system. Herein, over-complete systems, especially tight frames, possess advantages in sparse image representation and have been widely used in applications. In the first part of this dissertation, we focus on constructing discrete (tight) frames using Gabor atoms to meet the needs for sparse image modeling. Gabor systems have many advantages in sparse representation, for example accurate local time-frequency analysis and strong orientation selectivity. However, the discretiza- tion of continuous Gabor frames is non-trival in the sense that the resulted discrete system may lose the frame property, as well as fast implementation algorithms. Mo- tivated by these, we study the general theory of discrete Gabor frames by developing Gramian and dual Gramian analysis in C N. Consequently, we derive a necessary and sufficient condition for discrete tight Gabor frames and construct two classes of discrete tight Gabor frames as examples. Further, to remove the non-zero DC (di- rect current) offset, we revise the tight Gabor frame to Gabor induced frames with closed-form dual frames and the decomposition and recontruction processes can be implemented via filter bank based fast algorithms. The orientation selectivity of the resulted Gabor induced frame is optimal, i. e. the associated filters provide all the possible directions defined on discrete uniform grid. A weakness of the Gabor system is that it lacks the multi-scale property since all its atoms are of fixed size. One way to solve this problem is to consider multi-scale Gabor frames composed of several Gabor frames with windows of various lengths. The other way is to construct tight frame with both Gabor and MRA structures. Specifically, we take a set

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Illumination and image processing for real-time control of directed energy deposition additive manufacturing 27

Illumination and image processing for real-time control of d...

引用

27th Annual International Solid Freeform Fabrication Symposium - An Additive Manufacturing Conference, SFF 2016

作者： Seltzer, D. Schiano, J.L. Nassar, A.R. Reutzel, E.W. School of Electrical Engineering and Computer Science Pennsylvania State University University ParkPA16802 United States Applied Research Laboratory Pennsylvania State University University ParkPA16802 United States

This paper describes the optical setup and image processing required to estimate melt-pool width and build height for real-time control of melt-pool geometry in directed energy deposition additive manufacturing. To overcome optical interference from plasma emissions and laser interactions, the melt-zone is imaged using laser illumination. A single camera, fixed to the processing laser, views the laser interaction zone and provides images for estimating melt-zone width and build height. Using a bandpass filter and a single aspheric lens, the camera system provides sufficient magnification and depth of field to achieve a 1-mil (25.4 µm) resolution. Maintaining melt-zone geometry within desired tolerances requires an image acquisition and processing rate on the order of 100 frames per second. This bandwidth is achieved by a Camera Link camera and field-programmable gate array that implements algorithms for estimating melt-pool width and build height. The design and experimental verification of the camera, illumination, and processing systems are discussed. © 2016 The Department of Energy’s Kansas City National Security Campus is operated and managed by Honeywell Federal Manufacturing Technologies, LLC under contract number DE-NA0002839.

关键词： Real time control

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