• The KIPS Transactions:PartB
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• v.15B no.4
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• pp.259-268
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• 2008

In an effort to increase the data capacity of one-dimensional symbology, 2D barcodes have been proposed a decade ago. In this paper, we present an effective 2D barcode detection algorithm from gray-level images, especially for the handheld 2D barcode recognition system. To locate the symbol inside the image, a criteria based on the block contrast is adopted, and a gray-scale projection with sub-pixel operation is utilized to segment the symbol precisely from the region of interest(ROI). Finally, the segmented ROI is normalized using the inverse perspective transformation for the following decoding processes. We also introduce the post-processing steps for decoding the QR-code. The proposed method ensures high performances under various lighting/printing conditions and strong perspective deformations. Experiments shows that our method is very robust and efficient in detecting the code area for the various types of 2D barcodes in real time.

• Journal of the Korean Institute of Telematics and Electronics S
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• v.35S no.11
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• pp.152-165
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• 1998

The contour coding usually occupies the biggest part in the encoded bitstream, which causes the bottleneck problem of a region-based coding scheme. In this paper, new adaptive contour coding technique is proposed for the segmentation-based image coding. By adaptive contour coding considering contrast of neighbor regions in the proposed method, the overall bitrate can be significantly reduced without loss of the subjective image quality. After segmentation using watershed algorithm to the image, the contour segments are classified according to the contrast of the adjacent regions. Then, the contour segments between classified low contrast regions are highly compressed using morphological low pass filtering. The needed bits for encoding the contour information is reduced without loss of subjective image quality in the experiment.

• The Korean Journal of Applied Statistics
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• v.17 no.3
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• pp.499-505
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• 2004

The Pareto diagram analysis of the experimental data by the two level orthogonal arrays has been used widely in practice since it is a graphical, quick and easy method to analyze experimental results, which does not use the analysis of variance to screen significant effects. For the analysis of the experimental data by $L_{18}(2 \times 3^7)$ orthogonal array, Park(1996) proposed Pareto ANOVA in which the size of effects is defined by the mean squares of effects and the Pareto principle is used. In this paper, a new approach of the Pareto diagram analysis of the experimental data by $L_{18}(2 \times 3^7)$ orthogonal array is proposed. The main idea is to partition the size of three level effects by that of linear and quadratic orthogonal contrasts of those effects.

• Korean Journal of Cognitive Science
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• v.10 no.3
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• pp.39-49
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• 1999

The space of IID([ndependently, Identically Distributed) textures was built with axes of mean luminance and contrast, and studied on what kind of mechanisms were required to mediate texture segregation in this space. The conjecture was tested that one of these mechanisms is sensitive to the differences between the means of textures to be discriminated, whereas the other is sensitive to the differences between variances. The probability of discrimination was measured for various pairs of textures in the lID space The data were well fit by a model in which discrimination depends on two mechanisms whose responses are combined by probability summation. The conjecture was rejected that two mechanisms respectively tuned to mean and variance of texture function in segregation. Discrimination within space is mediated by 2 independent channels however: the 2 independent channels are not exactly tuned to texture mean and variance. One m mechanism was primarily sensitive to texture mean, whereas the other was sensitive to b both texture mean and variance.

• Journal of the Society of Disaster Information
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• v.9 no.4
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• pp.521-531
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• 2013

Temporary residence in disaster scenarios emergency response system designed for utilizing emergency incident types identified through the rapid emergency response procedures and proper application of the resulting accident is very important in order to minimize the damage. In this study, emergency disaster expected to analyze the potential for accidents, the possible accident scenarios emergency disaster preparedness These were derived on the basis of temporary residence in the emergency scenario, the scenario for the emergency response and recovery measures were derived. In addition, each event of an emergency response scenario to be taken during the emergency response requirements for emergency response to a step-by-step behavior was defined by the subject. In addition, subject-specific, step-by-step emergency disaster scenarios emergency response is quick and can be done in a comprehensive foundation was laid.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.23 no.4
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• pp.365-373
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• 2019

An Image Infra-Red(IIR) seeker is widely used for precision guided munitions to provide intelligent and precise target detection in terms of high kill probability. However, there have been issues in determining the performance versus cost trade-offs due to high cost of seeker comparing to other units of the munitions. In this paper, performance/cost evaluations have been carried out to find the most cost-effective solution for developing the IIR seekers. The relationships between the critical parameters and cost are investigated to determine the optimal point which represents the low cost with high performance. It is expected that the presented approach will be able to be used for guidelines to select the appropriate IIR seeker for the given operating conditions and can be useful to estimate the cost effectiveness of the precision guided munitions at early design stage.

• Proceedings of the Korea Information Processing Society Conference
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• 2006.05a
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• pp.1459-1462
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• 2006

오늘날 대부분의 기업과 공공조직들은 일상적인 업무처리를 컴퓨터 하드웨어, 소프트웨어 및 관련 프로세스에 크게 의존하고 있다. 이미 정보기술은 조직의 생산성향상, 업무의 효율성과 호과성의 제고, 전략적 경쟁우위의 달성 도구로 인지되고 있다. 이에 조직 전략 차원에서 정보기술에 대한 투자가 지속되어 왔으나 정보시스템의 대규모화에 따른 정보시스템 간 상호운용성(interoperability)과 통합성(integration)의 결여, 계층적 아키택쳐의 미흡, 중복 자료의 처리 등으로 인해 조직내에서 정보기술의 투자 대비 활용 이득이 기대에 미치지 못하는 현실이다. 이러한 문제를 극복하기 위해 새로운 정보체계인 정보기술 아키텍쳐 (Information Technology Architecture : ITA) 개션을 개발하게 되었다. 그러나 ITA 정의에 대한 체계적인 방법론과 도구의 부재로 개방/분산환경 하에서 정보기술에 대한 접근은 한마디로 임기응변적 내지는 벤더 중심적 관행으로 추진되었다. RTE는 하나의 문제를 해결하기 위한 또 다른기술이 아니라 비즈니스를 향상 시키고자 하는 개념이다. 핵심 비즈니스 프로세스의 관리 및 실행시 발생하는 지연요소를 제거하고 최신 정보를 사용해 경쟁하는 기업으로 정의된다. 또한 RTE는 기업들이 지금껏 추구해 왓던 e비즈니스와 연계하면서 끊임없이 프로세스를 효율적으로 개선해 나가는 것이다.

• Journal of the Korean School Mathematics Society
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• v.23 no.3
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• pp.299-321
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• 2020

PISA, organized by the OECD, started with the worries about what competencies students need in preparation for a changing future society. Starting with the first main survey in 2000, PISA, which was administered every three years, is preparing for the eighth cycle. PISA 2022 is a cycle in which mathematics becomes the main domain in 10 years, and the definition of mathematics literacy, mathematical framework, and illustrative examples were released. Therefore, in this study, the definition of PISA mathematics literacy and the trends on the mathematical framework were examined, and the characteristics of the illustrative examples introduced together with the PISA 2022 mathematical framework were analyzed. Through this, implications were drawn for the successful implementation of the 2015 revised curriculum and assessment.

• Proceedings of the Korea Information Processing Society Conference
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• 2000.10a
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• pp.363-366
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• 2000

인터넷 이용의 급증에 따라 전자상거래(Electronic Commerce)가 시간적, 공간적 제약을 극복한 새로운 경제활동으로 지식, 정보기반시대의 새로운 패러다임으로 국가 경제, 사회의 변혁을 주도하는 수단으로 부각되고 있다. 이러한 시대적 환경과 인터넷 이용의 확산으로 전자상거래 시장규모도 이례 없이 증가하고 있다. 특히 전자상거래에 대비하는 대부분의 업체들이 내세우는 전략의 공통점은 B2C(Business to Customer) 보다는 B2B(Business to Business)에 중점을 두고 있다는 것이다. 기업간 전자상거래에 필수적인 요소로 부각되고 있는 워크플로우 관리 시스템이 서로 다른 벤더들에 의해 제작된 워크플로우 엔진들의 상호운영성이 보장되지 않기 때문에 전자상거래의 제 기능을 발휘하지 못한다. 본 논문에서는 서로 다른 벤더들에 의해 제작된 워크플로우 엔진들의 상호운영성을 위한 기본 명세에 대해 살펴보기로 한다. 또한 엄청난 비즈니스 프로세스로 구성되어 있는 기업간 전자상거래 상에서의 통합된 비즈니스 프로세스를 정의하기 위한 워크플로우 정의도구 구현 시 고려해야 할 사항들에 대해서 살펴보기로 한다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.5
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• pp.2821-2830
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• 2014

This study was carried out to define gazelle industry through preceded research for gazelle firm & gazelle region, in order to discover high-growth industries. Gazelle industry is 'employees per company is more than ten people, and over the past five years, within top 10% by Birch employment growth index'. According to the definition of gazelle industry, Chungnam gazelle 105 industries were chosen. Then, analyzed whether Chungnam gazelle industries has competitiveness compared with nation and each city of Chungnam. In addition, typology to industrial development stage was devised by developing of business scale quotient(BQ) and industrial growth rate(IG). And development strategies of Chungnam gazelle industries was proposed case by industrial development stage.