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A Comparison of Ridge Detection Methods for DEM Data

A Comparison of Ridge Detection Methods for DEM Data

ACIS International Conference on Software Engineering, Artificial Intelligence, Networking, and Parallel/Distributed Computing (SNPD)

作者： Shinji Koka Koichi Anada Yasunori Nakayama Kimio Sugita Takeo Yaku Ryusuke Yokoyama Department Computer Science and System Analysis Nihon University Japan Waseda Research Institute for Science and Engineering Waseda University Japan Department Geosystem Sciences Nihon University Japan Department Mathematics Tokai University Japan Mitsubishi UFJ Information Technology Japan

We deal with ridge detection methods from digital elevation map (DEM) data. As ridge detection methods, the O (N 2 ) -time steepest ascent method and the O (N) -time discrete Lap lace transform (D.L.T.) method are known, where N is the number of cells. However, the D.L.T. method is too blurry to form ridge lines. In this paper, we introduce a 12 neighbor D.L.T. method which is a modification of the 4 neighbor D.L.T. method. And we also introduce another ridge detection method by the classification of local shapes around each cell. We can consider 32 patterns for ridges or valleys. Furthermore, we compare and evaluate their ridge detection methods in a certain area. We note that our two methods provide blurry terrain maps, but it require only O (N) -time for N cells, in comparison with the steepest ascent method.

关键词： Shape Educational institutions Feature extraction NASA Laplace equations computer science Classification algorithms

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A post-processing approach to Chinese address recognition

A post-processing approach to Chinese address recognition

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2011 8th International Conference on Fuzzy systems and Knowledge Discovery, FSKD 2011, Jointly with the 2011 7th International Conference on Natural Computation, ICNC'11

作者： Yao, Xinyu Lu, Yue Department of Computer Science and Technology East China Normal University Shanghai 200241 China ECNU-SRI Joint Lab for Pattern Analysis and Intelligent System Shanghai Research Institute of China Post Group Shanghai 200062 China

ISBN: (纸本)9781612841816

In recent years, it has become a focus to make use of the address recognition technology to improve the performance of mail sorting machines. The research in the postal address recognition, which extends the context relation from words to sentences with the use of the address information in post-processing, can effectively improve the recognition performance. In this paper, we propose a divide-and-rule method. The address is divided into high level address and low level address. For high level address, the similarity method with HLA database is presented. For low level address, the Syllable-based language model which applies to Pinyin is discussed. Then a new similarity method in multi-mode is introduced. After post-processing, for high level address, the hit rate rises from 87.63% to 95.12% while the accuracy rate declines by 2.67%, and for low level address, the hit rate increases from 58.16% to 91.81% while the accuracy rate decreases by 9.40%. © 2011 IEEE.

关键词： OCR fuzzy match post-processing similarity hit rate similarity method accuracy rate LOW LEVEL POST-PROCESSING modelling languages

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Tabular form editing with a hexadecimal grid graph model

Tabular form editing with a hexadecimal grid graph model

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IEEE Symposium on Visual Languages and Human Centric Computing (VL/HCC)

作者： Shinji Koka Kenshi Nomaki Koichi Anada Takeo Yaku Department Computer Science and System Analysis Nihon University Tokyo Japan Waseda Research Institute of Science and Engineering Waseda University Tokyo Japan

We discuss tabular forms. It is known in the previous studies that the “octgrid” is a data structure for single layer tabular forms with ruled line preserving algorithms. And the “hexadeci-grid” is known as a data structure for multiply layered tabular forms which is a generalization of the “octgrid”. Our purpose of this paper is to propose a new algorithm based on the “hexadeci-grid” model for editing tabular forms.

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Image feature based method for mail retrieval

Image feature based method for mail retrieval

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Chinese Conference on Pattern Recognition

作者： Du, Yuxiao Lu, Yue Department of Computer Science and Technology East China Normal University Shanghai 200241 China ECNU-SRI Joint Lab. of Pattern Analysis and Intelligence System Shanghai Research Institute China Post Group Shanghai 200062 China

ISBN: (纸本)9781424472109

A mail retrieval method based on image feature is an innovative approach by which the postal department can realize the query of mail information. The paper chooses envelope images with handwritten address characters as retrieval object. Through a series of researches on a large number of image features, we select partition-block image feature, projection histogram feature and SIFT feature to construct feature vector. In order to accelerate processing speed, we optimize the retrieval procedure by matching feature component in multiple levels. The experimental results and comparative analysis have demonstrated that the precision of the proposed retrieval system reaches at least 99%, which proves the practicability and robustness of the method. ©2010 IEEE.

关键词： Graphic methods

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Human systems integration and advanced technology in engineering department workload and manpower reduction

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NAVAL ENGINEERS JOURNAL 2003年第1期115卷 57-65页

作者： Lively, KA Seman, AJ Kirkpatrick, M KENNETH A. LIVELY graduated from the University of Colorado with a BS in applied mathematics and an MS in mathematics in 1976 and from the Massachusetts Institute of Technology with an MS in electrical engineering and the degree ocean engineer in naval architecture and marine engineering in 1984. He retired from the U.S. Navy in 1989 after 23 years of service. Assignments included electrical officer on the USS Constellation (CV 64) project engineer for the DDG 51 machinery control system (NAVSEA) and DDG 51 Technical Director (NAVSEA). He was vice president of the PDI Division of Bird-Johnson Company from July 1989 to November 1998 where he managed various gas turbine and machinery controls related development projects. He joined Anteon Corporation's Systems Engineering Group as senior controls engineer in December 1998 where he provided technical support to the integrated power systems program (NAVSEA PMS 510) and managed the Office of Naval Research Afloat Laboratory. DR. MARK KIRKPATRICK is currently an independent consultant in human factors and work-load/manning analysis and modeling. He holds a Ph.D. degree in experimental psychology from The Ohio State University and has 34 years of experience in applied human factors. From 1982 through 2000 Dr. Kirkpatrick served as the senior vice president of Carlow International. Prior to joining Carlow in 1982 Dr. Kirkpatrick served as a member of the technical staff at North American Rockwell's Missiles Division and as a project director and vice president for Essex Corporation. His areas of expertise include workload simulation task analysis operator-in-the-loop simulation human performance experimentation statistical analysis and human factors T&E. He has directed and/or participated in human factors projects for the U.S. Navy U.S. Army NASA Department of Transportation the U.S. Nuclear Regulatory Commission and private industry. ANTHONY J. SEMAN III is the technical manager for the reduced ship's crew by virtual presence (RSVP) advanced technology d

Aboard current ships, such as the DDG 51, engineering control and damage control activities are manpower intensive. It is anticipated that, for future combatants, the workload demand arising from operation of systems under conditions of normal steaming and during casualty response will need to be markedly reduced via automated monitoring, autonomous control, and other technology initiatives. Current DDG 51 class ships can be considered as a manpower baseline and under Condition III typical engineering control involves seven to eight watchstanders at manned stations in the Central Control Station, the engine rooms and other machinery spaces. In contrast to this manning level, initiatives such as DD 21 and the integrated engineering plant (IEP) envision a partnership between the operator and the automation system, with more and more of the operator's functions being shifted to the automation system as manning levels decrease. This paper describes some human systems integration studies of workload demand reduction and, consequently, manning reduction that can be achieved due to application of several advanced technology concepts. Advanced system concept studies in relation to workload demand are described and reviewed including. Piecemeal applications of diverse automation and remote control technology concepts to selected high driver tasks in current DDG 51 activities. Development of the reduced ship's crew by virtual presence system that will provide automated monitoring and display to operators of machinery health, compartment conditions, and personnel health. The IEP envisions the machinery control system as a provider of resources that are used by various consumers around the ship. Resource needs and consumer priorities are at all times dependent upon the ship's current mission and the availability of equipment pawnbrokers.

关键词： Naval warfare

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computer-aided plant enterprise safety management system (CAPE-SAFE) - Design framework

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systems Engineering 2002年第2期5卷 109-122页

作者： Gabbar, Hossam A. Chung, P.W.H. Shimada, Yukiyasu Suzuki, Kazuhiko Department of Systems Engineering Okayama University 3-1-1 Tsushima-Naka Okayama 700-8530 Japan Department of Computer Science Loughborough University Leicestershire LE11 3TU United Kingdom Frontier Collaborative Research Center Tokyo Institute of Technology Japan Department of Computer Science Loughborough University Systems Engineering Department Okayama University System Analysis Laboratory Systems Engineering Department Okayama University

Recent researches in the area of safety engineering highlighted the role of automated (computer-aided) tools in managing plant enterprise safety activities. This research has been carried out as collaboration with industry to design a computer-aided plant enterprise safety management system called CAPE-SAFE. The solution has been proposed to fulfill the need for standard and integrated safety management system that covers all aspects of plant enterprise safety. The proposed solution is integrated with other systems and components within plant enterprise engineering environment (PEEE) to enable exchanging and sharing lifecycle information and knowledge. The information system structure of the proposed solution has been presented as well as the design framework of the system components and modules. Hydrodesulfurization (HDS) continuous plant is used as a case study to illustrate the mechanism of CAPE-SAFE and to describe the interaction with other components within PEEE. The proposed solution will help in reducing the overall operating cost as well as the risk associated with plant operation. © 2002 Wiley Periodicals, Inc.

关键词： systems engineering

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Puzzles for Learning Model Checking, Model Checking for Programming Puzzles, Puzzles for Testing Model Checkers

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Electronic Notes in Theoretical computer science 2001年 43卷 34-49页

作者： N.V. Shilov K. Yi Research On Program Analysis System (ROPAS) Department of Computer Science Korean Advanced Institute of Science and Technology (KAIST) Kusong-dong Yusong-gu 373-1 Taejon 305-701 Republic of Korea

Paper discusses some issues related to the utility of finite games for early formal methods teaching and for validation of automatic tools which implement formal methods. In particular, some experience with (1) undergraduate teaching model checking via finite games, (2) solving game-based constraints via model checking, (3) testing model checkers against game test suits is presented. Basic ideas are illustrated by a model checking based solution for a complicated puzzle how to identify a unique false coin among given ones balancing them limited times.

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FRACTAL IMAGE COMPRESSION ON MIMD ARCHITECTURES I: BASIC ALGORITHMS∗This work was partially supported by the Austrian science Foundation FWF, project no. PII045-ÖMA and was presented in part at the First International Conference on Visual Information systems. Melbourne, February 1996

引用

Parallel Algorithms and Applications 1997年第3-4期11卷 187-204页

作者： A. Uhl[a][b] J. Hmmerle[a] [a] RIST++ (Research Institute for Softwaretechnology) [b] Department of Computer Science and System Analysis University of Salzburg

In this paper parallel algorithms for fractal image compression on MIMD architectures are introduced, classified, and discussed. The crucial point for the choice of a suitable parallelization strategy is the memory capacity of a processor element of the target architecture, therefore the classification follows the memory demand of the algorithms. We present experimental results of all main-representatives of the different algorithm classes. The results show a decreasing speedup for increasing memory demand for most of the proposed algorithms.

关键词： image compression parallel algorithms MIMD architectures

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Developing a prototype concurrent design tool for composite topside structures

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NAVAL ENGINEERS JOURNAL 1997年第3期109卷 279-290页

作者： Dirlik, S Hambric, S Azarm, S Marquardt, M Hellman, A Bartlett, S Castelli, V Steve Dirlik:began his career at the Naval Surface Warfare Center Carderock Division in 1981 as an aerospace engineer co-op student. He completed his bachelor of science degree in aeropace and ocean engineering from Virginia Polytechnic Institute and State University in 1985 and his master of science degree in aerospace engineering from the University of Maryland in 1990. Mr. Dirlik recently completed a master of science program in applied physics at The Johns Hopins University and currently works in the Radar Cross Section and Target Physics Branch of the Signatures Directorate at the Naval Surface Warfare Center Corderoke Division. He has worked on Navy low observable programs since 1990. Stephen Hambric:is a research associate at the Applied Research Laboratory at The Pennsylvania State University. He received his B. S. and M.S. degree in mechanical engineering from Virginia Polytechnic Institute and State University and his D. Sc. in mechnical engineering from the George Washington University. He has worked on several computer aided multidiscikplinary design and optimization projects over the years including an automated propeller design system and a structural acoustic optimization capability. Dr. Shpour Azarm:is currently working as an associate professor with the Design and Manufacturing Group of the Department of Mechanical Engineering at the University of maryland at College Park. Dr Azarm's expertise is in the areas of optimization-based designed and concurrent design and optimization of multidisciplinary systems. He was a consultant at Black & Decker Corporation (summer 1996) and worked as a Navy senior summer faculty fellow (summer 1995) and a NASA summer faculty fellow (summer 1994). He was a visiting scientist at NASA Langley Research Center for Multidisciplinary Analysis and Applied Structural Optimzatiom at the University of Siegen in Germany (spring 1992) and the Design Institute of the Technical University of Denmark (summer 1990). Dr Azarm was an associate technical editor of the ASME Jour

A prototype concurrent engineering tool has been developed for the preliminary design of composite topside structures for modern navy warships. This tool, named GELS for the Concurrent Engineering of Layered Structures, provides designers with an immediate assessment of the impacts of their decisions on several disciplines which are important to the performance of a modern naval topside structure, including electromagnetic interference effects (EMI), radar cross section (RCS), structural integrity, cost, and weight. Preliminary analysis modules in each of these disciplines are integrated to operate from a common set of design variables and a common materials database. Performance in each discipline and an overall fitness function for the concept are then evaluated. A graphical user interface (GUI) is used to define requirements and to display the results from the technical analysis modules. Optimization techniques, including feasible sequential quadratic programming (FSQP) and exhaustive search are used to modify the design variables to satisfy all requirements simultaneously. The development of this tool, the technical modules, and their integration are discussed noting the decisions and compromises required to develop and integrate the modules into a prototype conceptual design tool.

关键词： Warships

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Parallel image compression on a workstationcluster using PVM 3rd

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3rd European Conference on Parallel Virtual Machine, EuroPVM 1996

作者： Uhl, A. Hämmerle, J. Research Institute for Softwaretechnology Department of Computer Science and System Analysis Salzburg University Austria Research Institute for Softwaretechnology Salzburg University Austria

ISBN: (纸本)3540617795

Parallel image compression on a workstation-cluster is discussed. We introduce a parallel meta-algorithm for image compression which is well suited for every block based image compression scheme. This algorithm is explained in more detail in the case of fractal image compression. We present experimental results of a host/node implementation on a FDDI interconnected workstationcluster using PVM. © Springer-Verlag Berlin Heidelberg 1996.

关键词： Image compression

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