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Image dewarping and text extraction from mobile captured distinct documents

Procedia computer science 2010年 2卷 330-337页

作者： H.K. Chethan G. Hemantha Kumar Research Scholar DoS in Computer Science University of Mysore Mysore-57006 Professor DoS in Computer Science University of Mysore Mysore-57006

Camera Based Document Analysis (CBDA) is an emerging field in computer vision and pattern recognition. In recent days, cameras are moulded with several items of additional equipment. Thus, they play a vital role in the replacement of scanners with hand-held imaging devices (HIDs) like digital cameras, mobile phones and gaming devices. Warping is a common appearance in camera captured document images. It is the primary factor that makes such kind of document images hard to be recognized. Therefore it is necessary to restore warped document images before recognition. This paper presents a novel methodology to dewarp text from camera-captured warped images by co-ordinate transform model. Further, the extracted text from the warped and other document images will be recognized by maintaining a suitable database of all letters and numbers and converted into an editable form such as Notepad or as a MS Word document. The experimental results will be evaluated using a novel method to authenticate the methodology designed. Extensive experiments have been carried out on distinct documents and results are tabulated. Experimental results show the effectiveness of the proposed method.

关键词： CBDA computer visio Warping Pattern recognition HIDs Template

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Indoor location using wireless networks based on Bayesian reasoning

Indoor location using wireless networks based on Bayesian re...

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6th International Conference on Web Information Systems and Technologies, WEBIST 2010

作者： Rodríguez-Aragón, Jesús F. Rodilla, Vidal Moreno Diego, Belén Curto Rodríguez, Fco. Javier Serrano Santos, Raúl Alves Martín, M. José Polo Computer Science and Automatic Department University of Salamanca Pza. Los Caídos S/N Salamanca Spain

This paper describes a solution for the indoor location in the context of wireless local networks. Firstly, the processes of sampling and training are done by off-line scene analysis. Secondly, the mobile entity can b... 详细信息

ISBN: (纸本)9789896740252

关键词： Bayesian networks

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Bilingual alphabetisation of deaf children and progress assessment: A prototype of a web system based on a phonic methodology

Bilingual alphabetisation of deaf children and progress asse...

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IADIS International Conference WWW/Internet 2010

作者： Miranda, Aléssio De, L.J. García, L.S. Capovilla, F.C. Direne, A.I. Sunye, M.S. Castilho, M.A. Bona, L.E. Silva, F. MacHado, D. Duarte, J. Bueno, J. Computer Science Department UFPR Centro Politécnico Av Cel Francisco H dos Santos Curitiba Paraná Brazil

ISBN: (纸本)9789728939250

Globalization, supported by computer technology and mechanisms of long distance communication, is responsible for increasingly smaller obstacles in communication across countries and cultures. However, the communication obstacles faced by deaf people are yet to be eliminated, one effective way of doing it being through leaning Portuguese. In order to support this process and assess the students language acquisition, Fernando Capovilla develop a set of eleven tests through which the level of Libras (Brazilian Sign Language) and Portuguese knowledge of deaf students can be measured with some precision. In the present paper, we will describe a web prototype of these tests based on the aforementioned methodology. The test system we propose here could potentially be used by deaf people across the country. We will also discuss the challenges entailed by the project, as well as the solution we put together, for which both key concepts of Human-computer Interaction and certain contextual constraints were of paramount importance. © 2010 IADIS.

关键词： Human computer interaction

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Virtual interpolation of discrete multi-objective programming solutions with probabilistic operation

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Controle y Automacao 2011年第4期22卷 379-389页

作者： Silva, Ricardo C. Arruda, Edilson F. Ourique, Fabrício O. Institute of Science and Technology Federal University of São Paulo Rua Talim 330 São José dos Campos SP 12231-280 Brazil Department of Production Enginnering Alberto Luiz Coimbra Institute for Graduate Studies and Research in Engineering Federal University of Rio de Janeiro P.O. Box 68507 Rio de Janeiro RJ 21941-972 Brazil Computer Engineering Federal University of Pampa Campus Bagé Travessa 45 1650 Bagé RS 96413-170 Brazil

This work presents a novel framework to address the long term operation of a class of multi-objective programming problems. The proposed approach considers a stochastic operation and evaluates the long term average operating costs/profits. To illustrate the approach, a two-phase method is proposed which solves a prescribed number of K monoobjective problems to identify a set of K points in the Paretooptimal region. In the second phase, one searches for a set of non-dominated probability distributions that define the probability that the system operates at each point selected in the first phase, at any given operation period. Each probability distribution generates a vector of average long-term objectives and one solves for the Pareto-optimal set with respect to the average objectives. The proposed approach can generate virtual operating points with average objectives that need not have a feasible solution with an equal vector of objectives. A few numerical examples are presented to illustrate the proposed method.

关键词： Operating costs

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Collaborative system experiency in a critical activity context: Air traffic control

Collaborative system experiency in a critical activity conte...

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Brazilian Symposium on Collaborative Systems

作者： Merlin, Bruno Hiirata, Celso IHCS - IRIT UFPA Université Paul Sabatier Toulouse France Department of Computer Science ITA São José dos Campos - SP Brazil

ISBN: (纸本)9780769542393

Collaborative systems are used in several application areas. But, in the context of critical activities, where human life may be involved, the acceptation of such a system substituting human-human coordination is more difficult. The user must delegate a part of his responsibilities to the system and must have a high level of trust in its. Moreover it is difficult to promote changes in an implanted system leading to an evolution of working methods. This article tackles an experience of a collaborative system development in the context of the French air traffic control. We observe that the main artifact of coordination (the paper strip) between air traffic controllers turned an obstacle to the modernization of the system and to a wider collaboration. We searched an alternative to substitute the strip paper and a process to gain the trust of the user in the new system. The article relates the project experience and highlight recommendation for the development of these systems in critical activity contexts. © 2010 IEEE.

关键词： Air traffic control

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An innovative simulation,comparison methodology & framework for evaluating the performance evaluation of a novel IPv4/IPv6 transition mechanisms: BD-SIIT vs DSTM

An innovative simulation,comparison methodology & framework ...

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International Conference on Integrated Intelligent Computing

作者： Hanumanthappa, J. Manjaiah, D.H. Aravinda, C.V. Dos in Computer Science University of Mysore Manasagangotri Mysore India Mangalore University MangalagangotriMangalore India K.S.O.U. ManasagangothriMysore India

ISBN: (纸本)9780769541525

The concept of transition from IPv4/IPv6 network is currently being extensively studied to gain high level compatibility for easy, independent deployment of *** transition between IPv4 and IPv6 internet will be a very long process as they are completely incompatible two ***6 offers various features including Larger addressing capacity and capabilities, QoS control, encryption and decryption,mobility, routing,security ,real time applications like video and audio. Also it is impossible to switch the entire internet over night. As we know IPv4 and IPv6 coexist for a long time, and require the transition and inter-operation mechanism. Due to this reason several transition mechanisms have been implemented which can be used to create IPv6 smooth transition. Due to this fact, several transition mechanisms have been developed and introduced by *** paper discusses comparative and behavior analysis carried out on the two major IPv6 interoperation mechanisms: BD-SIIT and DSTM for the high level compatibility smooth transition, and interoperation between IPv4 and *** work not only attempts to determine the outright performance of each transition mechanism against the other but also against a theoretical evaluation of the specification. In this paper proposes a comparative study of the behavior of Comparison, Performance and Evaluation of the differences between BD-SIIT and DSTM transition mechanisms. © 2010 IEEE.

关键词： Internet protocols

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Simultaneous poling and planar waveguide fabrication in glasses

Simultaneous poling and planar waveguide fabrication in glas...

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Bragg Gratings, Photosensitivity, and Poling in Glass Waveguides, BGPP 2010

作者： Brennand, A.L.R. Wilkinson, J.S. Instituto de Estudos Avançados Rd dos Tamoios Km 55 São José dos Campos São Paulo CEP 12228-001 Brazil School of Electronics and Computer Science University of Southampton Southampton SO17 1BJ United Kingdom

Fabrication of buried planar waveguides with 2nd order nonlinear susceptibility in the upper cladding is carried out in soda-lime and BK7 glass substrates in one step by thermal poling. © 2010 Optical Society of ... 详细信息

ISBN: (纸本)9781557528964

关键词： Glass

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A technological platform for the teaching of control engineering

A technological platform for the teaching of control enginee...

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2010 IEEE Education Engineering Conference, EDUCON 2010

作者： Carvalho, Adelson S. Barone, Dante Zaro, Milton Graduate Program in Computer Science in Education Universidade Federal do Rio Grande do Sul Porto Alegre-RS Brazil Control Engineering and Automation Superior Course Instituto Federal Fluminense Campos Dos Goytacazes-RJ Brazil

ISBN: (纸本)9781424465682

This paper presents a technology platform as a resource for the teaching of control engineering. The platform in question combines the educational potential of software of design and simulation of control systems - MATLAB ® - and the connection between this software and a pilot distillation column. The research hypothesis is that the use of technology platforms such as this helps to develop aspects not only stimulated with simulation. Therefore, an experiment based on the constructivist and social-interactionist theory has been designed to detect student development and to capture their impressions of the platform. The results are presented as graphs and impression reports of the teacher. © 2010 IEEE.

关键词： Teaching

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An Innovative Simulation, Comparison Methodology & Framework for Evaluating the Performance Evaluation of a Novel IPv4/IPv6 Transition Mechanisms: BD-SIIT vs DSTM

An Innovative Simulation, Comparison Methodology & Framework...

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International Conference on Integrated Intelligent Computing (ICIIC)

作者： J. Hanumanthappa D.H. Manjaiah C.V. Aravinda Dos in Computer Science University of Mysore Mysore India Mangalore University Mangalore INDIA K.S.O.U Manasagangothri Mysore

The concept of transition from IPv4/IPv6 network is currently being extensively studied to gain high level compatibility for easy, independent deployment ofIPv6. The transition between IPv4 and IPv6 internet will be a very long process as they are completely incompatible two protocols. IPv6 offers various features including Larger addressing capacity and capabilities, QoS control, encryption and decryption, mobility, routing, security, real time applications like video and audio. Also it is impossible to switch the entire internet over night. As we know IPv4 and IPv6 coexist for a long time, and require the transition and inter-operation mechanism. Due to this reason several transition mechanisms have been implemented which can be used to createIPv6 smooth transition. Due to this fact, several transition mechanisms have been developed and introduced by IETF. This paper discusses comparative and behavior analysis carried out on the two majorIPv6 interoperation mechanisms: BD-SIIT and DSTM for the high level compatibility smooth transition, and interoperation between IPv4 andIPv6. This work not only attempts to determine the outright performance of each transition mechanism against the other but also against a theoretical evaluation of the specification. In this paper proposes a comparative study of the behavior of Comparison, Performance and Evaluation of the differences between BD-SIIT and DSTM transition mechanisms.

关键词： Throughput Protocols Logic gates Tunneling Internet Workstations IP networks

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Brazilian Decimetric Array (BDA) project - Phase II

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Proceedings of the International Astronomical Union 2010年第S264期5卷 493-495页

作者： C. Faria S. Stephany H. S. Sawant J. R. Cecatto F. C. R. Fernandes Department of Computer Science - DC/PUCMinas Pocos de Caldas Brazil email: faria@pucpcaldas.br National Institute for Space Research - INPE Sao Jose dos Campos Brazil Institute of Research and Development - UNIVAP Sao Jose dos Campos Brazil

The configuration of the second phase of the Brazilian Decimetric Array (BDA), installed at Cachoeira Paulista, Brazil (Longitude 45° 0′ 20″ W and Latitude 22° 41′ 19″ S), is a T-shaped array where 21 antennas are being added to existing 5 antennas of the first phase. In the third phase, in each arm of the T array, four more antennas will be added and baselines will be increased to 2.5 × 1.25 km in east-west and south directions, respectively. The antennas will be equally spaced at the distances of 250 meters from the central antenna of the T-array. Also, the frequency range will be increased to 1.2–1.7, 2.8 and 5.6 GHz. The Second phase of the BDA should be operational by the middle of 2010 and will operate in the frequency range of (1.2–1.7) GHz for solar and non solar observations. Here, we present the characteristics of the second phase of the BDA project, details of the array configuration, the u-v coverage, the synthesized beam obtained for the proposed configuration.

关键词： instrumentation: interferometers techniques: interferometric image processing

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