• Proceedings of the Korea Information Processing Society Conference
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• 2012.11a
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• pp.1500-1503
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• 2012

본 논문은 학부 종합설계 과목에 팀 프로젝트로, 안드로이드 어플리케이션에 소규모 소프트웨어 개발 방법론인 XP(eXtreme Programing)를 적용하고자 한다. XP는 작은 단위의 소프트웨어를 효율적으로 개발하기 위한 방법으로, RUP(Rational Unified Process)와 같은 대규모 소프트웨어 개발방법론보다 소프트웨어 개발 일정을 단축시킬 수 있고 요구사항 변경에 유연하다. 그러나 XP의 단점은 설계단계에서의 문서화가 부족한 것이다. 본 논문에서는 XP의 단점을 보완하기 위하여 설계단계에서 UML을 사용하여 문서화와 도식화를 시도하고자 한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2004.05a
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• pp.1327-1330
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• 2004

본 논문은 멀티 프로세스 컨트롤&모니터링 모델을 지원하는 AI-Maker 시스템에 대해서 기술한다. 멀티 프로세스 컨트롤&모니터링 모델은 제어 구조의 표준으로 떠오르고 있는 OPC와 마이크로소프트사의 분산형 보안 서비스 개념(하부 구조 서비스, 응용 프로그램 지원 서비스)들을 사용하여 실제, 가공, 그리고 가상 데이터 액세스 포인터들에 대해서 차별화 된 제어 구조를 제시한다. AI-Maker는 다양한 사용자들에 대한 차별화 된 서비스와 가공 또는 가상 액세스 포인터를 사용하기 때문에 장비 종속적인 시스템에 대한 개발비용을 감소시킬 수 있다. 또한 전문가 시스템의 학습에 필요한 표본 데이터를 제공하므로 필드버스 기반의 자동화 시스템 개발 및 유지보수 시 양질의 서비스를 제공할 수 있는 이점이 있다.

• Proceedings of the Korea Information Processing Society Conference
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• 2013.11a
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• pp.409-412
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• 2013

본 논문에서는 현재 표면처리산업에서의 피도금걸이-랙에 대한 수동적인 데이터 관리의 문제점을 해결하고자 모바일 RFID(Radio Frequency Identification) 리더기 및 스마트 모바일 디바이스를 이용한 시스템을 제안한다. 이를 위해 본 논문에서는 랙의 라이프사이클에 따른 상태전이를 분석하고, RFID 시스템을 이용한 자동인식기술을 사용하였다. 자동 인식된 랙은 현재 상태에 따라 전이를 일으키는 활동을 수행하도록 시스템을 구축하였으며, 다양한 유형의 랙을 각 상황에 맞게 식별해 내는 방법을 통해 도금라인 프로세스의 효율을 향상시킬 수 있도록 하였다.

• Proceedings of the Korean Information Science Society Conference
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• 2002.04b
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• pp.286-288
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• 2002

본 연구에서는 자동화된 부품생산 공장에서의 실시간 통계적 공정관리 시스템의 구축사례를 소개하고, 생산현장에서 지속적으로 올라오는 많은 양의 품질정보를 실시간으로 처리하기 위해 적용된 우선순위를 고려한 분산처리방식을 응용한 알고리즘을 제시한다.

• Journal of the Korean Institute of Telematics and Electronics A
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• v.31A no.10
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• pp.21-30
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• 1994

We discussed the Distributed Control System's design on preface and analyzed time of the real-time communication by using designed system. The DCS proposed in this thesis was implemented to network file system having recovery advantage and shared memory method to access file system of a Remote Station with ease. Also, this system minimized the network delay-time by using the real-time VME147 board. In implemented DCS, the performance analysis of real-time process of a Remote Station was done to get the total time for reak-tune communication from a Remote Station to the Central Station after terminating of process. For the analysis of system performance, we experiented by three steps. Firstly, we measuredthe processing the of LOOP function that real-time CPU convertes to-2,500~10.000 values from the input data of the Analog Interface Card. Secondly, we measured the processing time of the LOGIC function and the LOOP function. Lastly, we measured total processing time for communication from a Remote Station to the Centrol Station.

• Proceedings of the Korean Society of Machine Tool Engineers Conference
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• 2003.10a
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• pp.420-425
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• 2003

Generally, reverse engineering means getting CAD data from unidentified shape using vision or 3D laser scanner system. In this paper, we studied unidentified model by machine vision based reverse engineering system to get information about in-processing model. Recently, vision technology is widely used in current factories, because it could inspect the in-process object easily, quickly, accurately. The following tasks were mainly investigated and implemented. We obtained more precise data by corning camera's distortion, compensating slit-beam error and revising acquired image. Much more, we made similar curves or surface with B-spline approximation for precision. Until now, there have been many case study of shape recognition. But it was uncompatible to apply to the field, because it had taken too many processing time and has frequent recognition failure. This paper propose recognition algorithm that prevent such errors and give applications to the field.

• Proceedings of the IEEK Conference
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• 2001.06b
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• pp.269-272
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• 2001

In this paper we proposed the format converter design and implementation for real time image processing. This design method is based on realized the large processor-per-pixel array by integrated circuit technology in which this two types of integrated structure is can be classify associative parallel processor and parallel process with DRAM cell. Layout pitch of one-bit-wide logic is identical memory cell pitch to array high density PEs in integrate structure. This format converter design has control path implementation efficiently, and can be utilized the high technology without complicated controller hardware. Sequence of array instruction are generated by host computer before process start, and instructions are saved on unit controller. Host computer is executed the pixel-parallel operation starting at saved instructions after processing start

• Proceedings of the KSRS Conference
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• 2007.10a
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• pp.219-222
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• 2007

Today, use of high resolution satellite image with at least 1m resolution is expanding into many more areas including forest, river way, city, seashore and so forth for disaster prevention. Interest in this medium is increasing among the general public due to the roll-out to the private sector as Google earth, Virtual Earth and so forth. However, pre-processing process that revises the geometrical distortion that result at the time of photographing is required in order to use high resolution satellite image. The purpose of this research is to search the most accurate GCP(Ground Control Point) information acquisition method that is used for the revision of high resolution satellite image's geometrical distortion through automated processing. Through this, it is possible to contribute to increasing the level of accuracy at the time of high resolution satellite image revision and to secure promptness.

• Journal of the Korean Wood Science and Technology
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• v.29 no.3
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• pp.21-26
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• 2001

Acquisition of precise information on drying characteristics of wood is indispensable for the improvement of drying schedules and wood quality. Recognition of the exact moisture content at which drying defects such as checks occur during drying with given drying conditions may be essential to reduce drying losses. In this study an image-processing system was combined with a laboratory-scale wood dry kiln for experiments and the surface of tree disk of black locust (Robinia pseudoacacia L.) was monitored to investigate the behavior of check formation over all the drying process. This system showed good potential for improving drying schedules and wood product quality.

• Journal of Sensor Science and Technology
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• v.24 no.6
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• pp.368-372
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• 2015

In this paper, we proposed a post-processing technique for improving classification performance of electronic nose (E-Nose) system which may be occurred drift signals from sensor array. An adaptive radial basis function network using stochastic gradient (SG) and singular value decomposition (SVD) is applied to process signals from sensor array. Due to drift from sensor's aging and poisoning problems, the final classification results may be showed bias and fluctuations. The predicted classification results with drift are quantized to determine which identification level each class is on. To mitigate sharp fluctuations moving-averaging (MA) technique is applied to quantized identification results. Finally, quantization and some edge correction process are used to decide levels of the fluctuation-smoothed identification results. The proposed technique has been indicated that E-Nose system was shown correct odor identification results even if drift occurred in sensor array. It has been confirmed throughout the experimental works. The enhancements have produced a very robust odor identification capability which can compensate for decision errors induced from drift effects with sensor array in electronic nose system.