• 한국철도학회:학술대회논문집
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• 한국철도학회 2003년도 추계학술대회 논문집(III)
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• pp.587-593
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• 2003

There has been much interest in the Bluetooth technology since it could enable users to connect to a wide range of computing and telecommunication devices without the need to carry or connect cables. It delivers opportunities for rapid, ad-hoc connections, and in the future, could possibly enable automatic, unconscious, connections between devices. In this paper, we discussed a scatternet formation protocol for Bluetooth-based ad hoc networks and proposed the identification system of an object using Bluetooth Scatternets. Over the past few years, several studies have been made on the identification of an object by several RF(Radio Frequency) systems. But there are still some problems, the interference of signals as an example, for the identification of an object. The critical question is how to identify an object precisely without the interference of signals. This paper is an investigation of the Scatternet formation protocol for Bluetooth-based ad hoc networks and the identification system of an object using Bluetooth Scatternets composed of multiple Piconets.

• 한국정보처리학회논문지
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• 제6권10호
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• pp.2693-2706
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• 1999

Reengineering to object-oriented system is needed to maintain the system and satisfy requirements of structure change. Target systems which should be reengineered to object-oriented system are difficult to change because these systems have no design document or their design document is inconsistent of source code. Using design document to identifying objects for these systems is improper. There are several researches which identify objects through procedural source code analysis. In this paper, we propose automatic object identification method based on clustering of VTFG(Variable-Type-Function Graph) which represents relations among variables, types, and functions. VTFG includes relations among variables, types, and functions that may be basis of objects, and weights of these relations. By clustering related variables, types, and functions using their weights, our method overcomes limit of existing researches which identify too big objects or objects excluding many functions. The method proposed in this paper minimizes user's interaction through automatic object identification and make it easy to reenginner procedural system to object-oriented system.

• 정보처리학회논문지:컴퓨터 및 통신 시스템
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• 제6권2호
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• pp.51-58
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• 2017

안전과 보안상의 이유로 감시 카메라의 시장이 확대되고 있으며 이에 대해 영상 인식 및 추적에 관한 연구도 활발히 진행 중에 있으나 인식 및 추적되는 객체의 정보를 획득하여 객체를 식별하는 데는 한계가 있다. 특히, 감시카메라가 활용되는 쇼핑몰, 공항 등과 같은 개방된 공간에서는 다수의 객체들을 식별하기란 더욱 어렵다. 따라서 본 논문에서는 기존의 영상기반 객체 인식 및 추적 시스템에 RFID 기술을 더하여 객체 식별기능을 추가하고자 하였으며 영상 기반과 RFID의 문제 해결을 위해 상호 보완하고자 하였다. 그리하여 시스템의 모듈별 상호작용을 통해 영상기반 객체 인식 및 추적에 실패할 수 있는 문제와 RFID의 인식 오류로 발생할 수 있는 문제에 대한 해결 방안을 제시하였다. 객체의 식별 정도를 4단계로 분류하여 가장 최상의 단계로 객체가 식별이 되도록 시스템을 설계해 식별된 객체의 데이터 신뢰성을 유지할 수 있도록 하였다. 시스템의 효율성 판단을 위해 시뮬레이션 프로그램을 구현하여 이를 입증하였다.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1996년도 Proceedings of the Korea Automatic Control Conference, 11th (KACC); Pohang, Korea; 24-26 Oct. 1996
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• pp.145-148
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• 1996

In moving object tracking based on the visual sensory feedback, a prerequisite is to determine which feature or which object is to be tracked and then the feature or the object identification precedes the tracking. In this paper, we focus on the object identification not image feature identification. The target identification is realized by finding out corresponding line segments to the hypothesized model segments of the target. The key idea is the combination of the Mahalanobis distance with the geometrica relationship between model segments and extracted line segments. We demonstrate the robustness and feasibility of the proposed target identification algorithm by a moving vehicle identification and tracking in the video traffic surveillance system over images of a road scene.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2007년도 추계종합학술대회
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• pp.289-292
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• 2007

물체컬러식별 임베디드시스템을 프로세서 기반으로 구현하고 물체를 식별 분류하는 무인물류관리 시스템을 제한한다. 임베디드시스템 구현은 초음파 센서를 이용하여 물체의 유무와 거리를 추출하고 USB CCD 카메라로부터 이진영상을 획득한다. 영상식별 알고리듬은 입력영상에 대해 컬러 검출한 패턴을 기준패턴과 비교 식별하여 지정된 랙에 이동 저장한다. 실험결과 무인화 창고관리 로봇기능으로 실용가능성을 제시하였다.

• International Journal of Internet, Broadcasting and Communication
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• 제14권1호
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• pp.10-18
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• 2022

Since High Sierra, APFS has been used as the main file system. It is a well-established file system that has been used stably thus far. From the perspective of digital forensics, there are still many areas to be investigated. Apple File System Reference is provided to the apple developer site, but it is not satisfactory to fully analyze APFS. Researchers know more about the structure of APFS than before, but they have not yet fully analyzed its structure to a perfect level about it. In this paper, we develop APFS object identification tool for digital forensics. The most basic and essential object identification and analysis of the APFS filesystem will be conducted with the tool. The analysis in this study serves as the background for an analysis of the checkpoint operation principle and structure, including the more complex B-tree structure of APFS. There are several options for the developed tool, but the results of two use cases will be shown here. Based on the implemented tool, it is hoped that more functions will be added to make APFS a useful tool for faster and more accurate analyses.

• 산업경영시스템학회지
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• 제31권1호
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• pp.116-123
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• 2008

Food and Agriculture Organization (FAO) and many countries make an effort to conserve and utilization of animal genetic resources to prepare for our unpredictable future. In order to protect the customer and the producer from the animal diseases and unjust distribution, many country seek to appropriate solution. Among the solutions, RFID technology can be used as a basic technology, since this technology can be applied in the conservancy and utilization of animal genetic resources, object management for improved animal and traceability of animal's distribution flow. There are two main issues in making the efficient RFID environment. The first issue is the standardization of code system for object identification. International Organization for Standard (ISO) published the standard which regulates RFID of animal (ISO 11784 and ISO 11785). Based on these standards, many countries have tried to establish their national standard. In Korea, National Institute of Animal Science (NIAS) playa main role in establishing the standard of object identification code based on ISO 11784. Even though the standard format of object's identification is well established, the RFID system may not be operated well without the standardization of RFID network and related equipment. In Korea, National Internet Development Agency of Korea (NIDA) has proposed the RFID Network at 2006, which can be applied in the different kind of system at each phase. But, the implementation case of this RFID Network does not reported yet, since many company or agency who introduce RFID technology, implemented as an isolated individual system. In our study, we show that RFID network can be utilized for any kind of system at each phase, and propose the improvement point in order to be widely used.

• 정보처리학회논문지D
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• 제9D권1호
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• pp.91-102
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• 2002

사용자의 요구사항 변경에 따른 반영, 빠른 시스템 구축, 유지 보수 단계의 효율적인 시스템 관리, 소프트웨어의 수정 용이성, 저렴한 비용 등은 컴포넌트 기반 시스템 구축이 필수적인 사항으로 여겨지고 있다. 이러한 컴포넌트 기반 시스템 구축을 위한 기존의 컴포넌트 개발 방법론은 컴포넌트 식별을 위하여 객체를 추출하는 부분이 비효율적이고 시스템 컴포넌트를 추출하기 위한 방법이 제시되어 있지 않다. 또한 시스템의 전체 도메인을 중심으로 비즈니스 컴포넌트 식별을 위한 절차와 방법만을 제시하고 있다. 그리고 컴포넌트 식별을 위하여 대부분 개발자의 직관과 경험에 의존하는 문제점이 있다. 따라서 본 논문에서는 객체를 추출하는 비효율적인 부분을 개선하기 위하여 요구 사항 분석단계부터 객체를 추출하는 단계까지 RUP(Rational Unified Process)를 적용한다. 또한 시스템 컴포넌트를 식별하기 위한 방법과 절차를 제안하고 시스템의 전체 도메인을 중심으로 비즈니스 컴포넌트를 식별하는 것이 아니라 추출된 시스템 컴포넌트를 중심으로 비즈니스 컴포넌트를 추출한다. 개발자의 직관과 경험에 의존하여 컴포넌트를 식별하는 문제점을 보완하기 위하여 응집척도와 결합철도를 제안하고 적용한다. 본 논문에서 제안하는 컴포넌트 식별 방법은 객체 식별의 용이성, 컴포넌트의 기능적 재사용성, 추적성 그리고 컴포넌트의 독립성을 중심으로 좀 더 효율적으로 컴포넌트를 식별한다.

• 한국생산제조학회지
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• 제24권6호
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• pp.703-709
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• 2015

In this work, a robot aimed at grapping and delivering an object by using a simple finger-pointing command from a hand- or arm-handicapped person is introduced. In this robot system, a Leap Motion sensor is utilized to obtain the finger-motion data of the user. In addition, a Kinect sensor is also used to measure the 3D (Three Dimensional)-position information of the desired object. Once the object is pointed at through the finger pointing of the handicapped user, the exact 3D information of the object is determined using an image processing technique and a coordinate transformation between the Leap Motion and Kinect sensors. It was found that the information obtained is transmitted to the robot controller, and that the robot eventually grabs the target and delivers it to the handicapped person successfully.

• ETRI Journal
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• 제25권2호
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• pp.121-132
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• 2003

To enhance the productivity of software development and accelerate time to market, software developers have recently paid more attention to a component-based development (CBD) approach due to the benefits of component reuse. Among CBD processes, the identification of reusable components is a key but difficult process. Currently, component identification depends mainly on the intuition and experience of domain experts. In addition, there are few systematic methods or tools for component identification that enable domain experts to identify reusable components. This paper presents a systematic method and its tool called a component identifier that identifies software components by using object-oriented domain information, namely, use case models, domain object models, and sequence diagrams. To illustrate our method, we use the component identifier to identify candidates of reusable components from the object-oriented domain models of a banking system. The component identifier enables domain experts to easily identify reusable components by assisting and automating identification processes in an earlier development phase.