• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 1996년도 추계학술대회 논문집
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• pp.469-473
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• 1996

In this paper, it is proposed a new approach to the development of the automatic vision system to e famine and repair the steam generator tubes at remote distance. In nuclear power plants, workers are reluctant of works in steam generator because of the high radiation environment and limited working space. It is strongly recommended that the examination and maintenance works be done by an automatic system for the protection of the operator from the radiation exposure. Digital signal processors are used it, implementing real time recognition and examination of steam generator tubes in the proposed vision system. Performance of proposed digital vision system is illustrated by experiment for similar steam generator model.

• 한국측량학회지
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• 제13권2호
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• pp.199-208
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• 1995

비측정용 사진기로 촬영된 사진으로부터 수치화상처리기법과 컴퓨터를 이용하여 3차원 좌표 및 정보를 추출하는데 있어서는 해결해야 할 과제들이 뒤따르게 된다. 따라서 본 연구에서는 수치사진화상을 얻기위한 비측정용 사진의 스캐닝 방법, 스캐닝 시에 발생하는 기하왜곡의 보정방법, 각 화소에 해당하는 3차원 지상좌표 추출을 위한 공간교차이론의 효율적 적용기법 등을 연구하고 실제 적용을 통하여 제시된 기법의 유효성을 검증할 수 있었다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1998년도 하계학술대회 논문집 B
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• pp.506-508
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• 1998

In this paper, the optimal digital redesign is studied within the framework of fuzzy systems and dual-rate sampling control theory. An equivalent fast-rate discrete-time state-space model of the continuous-time system is constructed by using fuzzy inference systems. To obtain the optimal feedback gains developed in the continuous-time system, the constructed fuzzy system is converted into a continuous-time system. The developed continuous-time control law is converted into an equivalent slow-rate digital control law using the proposed digital redesign method. The digital redesign technique using a fuzzy model is employed to simulate the inverted pendulum dynamics.

• 반도체디스플레이기술학회지
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• 제15권2호
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• pp.43-48
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• 2016

In this paper, we propose a traffic light detection and recognition (TLDR) algorithm in the daytime. The proposed algorithm utilizes the color and shape information for the TLDR. At first, a traffic light is detected and recognized based on its shape information. Then, the color range of the detected traffic light is investigated in HSV color space. The input data of the proposed TLDR algorithm is the color image captured using the black box camera during driving. Our simulations demonstrate that the proposed algorithm can achieve a high detection and recognition performance for the images including traffic lights.

• 한국실내디자인학회:학술대회논문집
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• 한국실내디자인학회 2004년도 추계학술발표대회 논문집
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• pp.147-148
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• 2004

Our society is rapidly digitalizing. The effects of his digitalization are very diverse and one of them is that our living environments are changing. Many routine places which certain activities have been taken places are changing. For example, home office, education at home using internet, home shopping, internet banking, and so on. These facts cause the home to be extended and digitalized. That is, as our living patterns are changing, the housing needs are also changing. The purpose of this study is to graspe the digital related housing needs of the residents and suggest the directions of the digital home design. The subjects were 400 housewives who lived in 85m2 sized multi-family houses in Busan. They were relatively young in their age, had high education level, and middle income. On the base of their demands, the digital home designed as follows would be desirable: 1) safe and secure design and digital system, 2) design to improve residents' health and encourge family interaction, 3) human, warm, and soft interior mood, 4) the space composition different from the existing one.

• 대한전기학회논문지:전기기기및에너지변환시스템부문B
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• 제49권11호
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• pp.757-762
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• 2000

This paper presents a digital controller for three-phase Boost Converter. Generally, the conventional Space-Vector Pulse Width Modulation (SVPWM) have complex computation. Thereby, it should be implemented with high performance processor. In order to reduce calculation burden of the conventional SVPWM, digital controller which has a simplified SVPWM algorithm is designed in this study. A proposed digital controller consists of fuzzy pwm controller and prediction controller. In simulations and experiments, the proposed digital controller is validated.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2022년도 가을 학술논문 발표대회
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• pp.155-156
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• 2022

In the process of developing an industrial robot, various simulations should be conducted to evaluate the driving, movement, and performance of the robot. Space and time constraints exist to manufacture existing robots and implement various simulations, and efficiency is reduced due to high costs. To solve this problem, many simulations can be conducted by implementing the same movement and working environment as the real environment in virtual reality using digital twin technology. This study proposes a process for establishing a digital twin model of automated layout robots. Using the digital twin model, it is expected that it will not only evaluate the hardware performance of the robot in the future, but also verify the robot's algorithms such as motion planning and work process, identify and solve potential problems in advance, and prevent problems caused by software.

• 한국실내디자인학회논문집
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• 제24권4호
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• pp.51-60
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• 2015

This study aims to establish the foundation for a simultaneity research, draw the potential through Bergson's simultaneity, and explore a space with the possibility of a continued change, focusing on the simultaneous process, in which physical mobility and consciousness of space last together. First, this study was focused on understanding Bergson's simultaneity, on the basis of the perspective that space needs to have more active, dynamic mobility. For understanding Bergson's simultaneity, the understanding of Bergson's duration conception, memory and perception was preceded. After that, the characteristics of simultaneity were extracted from the concepts of duration, change, memory and perception and its characteristics, which are connected to space, were analyzed. As a result, the study on simultaneity that was intensively analyzed, based on diverse cases, re-awakened the basis of value or thought, which we must aim at, in space design of the present time. This shows the possibility of another creative form that can be found in spaces of the present time and serves as the foundation to discover an essential and potential value of space in space design. Moreover, the combination of space with science, humanities, art and digital media technology demonstrated once again that there is a good possibility of approaching non-representational space that is pursued today and it is anticipated that using Bergson's simultaneity as a medium for spatial combination in their relationship would help in drawing deeper internal meaning and potential of space.

• 한국멀티미디어학회논문지
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• 제23권2호
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• pp.376-382
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• 2020

In the 1970s and 1980s, space installations in films became a new approach to film research. Many film directors and theoretical scholars believe that the space setting in films, other than textual stories, is an important core of film narrative research. Early film scholars have proposed that the film space with sensory narrative mode as the core motive force can promote people's in-depth understanding of the film content. Therefore, many researchers have tried to emphasize the importance of space in films through Hitchcock's films, but have not analyzed the elements and techniques of film space performance in detail. Reviewing the Hitchcock's classic crime film, through the space set in the traditional film, we can discover the movie techniques and concepts related to space. Therefore, this study takes Hitchcock's classic crime film as an example, and through analysis of film space expression techniques, attempts to propose factors for film space creation and bring new spatial perception effects to the audience.

• 인터넷정보학회논문지
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• 제5권2호
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• pp.1-15
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• 2004

현재의 인터넷 공간은 소위 유비쿼터스 공간으로 진화해 가고 있다. 인터넷 공간과는 달리, 유비쿼터스 공간에서는 정보가 컴퓨터 메모리, 인간의 두뇌 그리고 물리적 사물에 골고루 분포하게 된다. ‘하이퍼텍스트’ 는 컴퓨터 메모리(즉, 전자 공간)를 전제로 한 정보 연결 모델로, 유비쿼터스 공간에는 잘 맞지 않는다. 이점에 착안하여, 본 논문에서는 CPM모델을 제안하였다. CPM 모델은 아날로그 컴퓨팅, 디지털 컴퓨팅, 휴먼 컴퓨팅 등 세 가지 연산 메커니즘을 포괄할 수 있도록 설계되었다. 본 논문에서는, CPM 모델이 갖는 이러한 속성이 유비쿼터스 공간에서의 정보 연결 목적에 부합됨을 보였다.