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류재훈,류광렬,Ryu, Jae Hoon,Ryu, Kwang Ryol 한국정보통신학회 2016 한국정보통신학회논문지 Vol.20 No.11
본 논문은 해저탐사에서 소나영상 촬영을 위한 무인자율항법(AUSV)시스템 구현에 관한 연구이다. 자율항법 시스템은 선체에 모션센서, DGPS에 의한 현재 경위도 좌표와 목표지 경위도 좌표의 차를 가지고 선체 추진체의 항로를 FFPID 알고리즘으로 제어한다. 실험결과, 목적지 좌표에 대한 제어좌표 오차는 전체 항법거리 1km 에서 6 m 이하로 우수하다. 또한 자율항법 모드에서의 소나영상 촬영 결과물은 유인선 촬영 결과물과의 차이는 12 화소 이하로 전체 영상 차이는 거의 식별할 수 없이 동일하다. 개발된 시스템은 유인선으로 촬영 불가능한 해저 지형에 대한 소나영상 촬영을 위한 새로운 방법으로 활용 가능하다. This paper describes the implementation of AUSV system for sonar image acquisition to survey the seabed. The system is controlled by Feed Forward PID algorithm on the vessel for bearing of the thrusters composed of motion sensor and DGPS which calculates the differences between the current location and the destination location for longitude and latitude based on GPS coordinates. As experimental results, the bearing control performance is good that the error distance from the destination positions are under 6m in total survey track of 1km. And the sonar image deviation of a object is under 12 pixels from the manned survey method, which the comparison with the total image quality is almost the same as the manned survey one. Thus the proposed AUSV system is a new method of system can be utilized at the limited survey areas as the surveyor should not be able to approach on sea surface by onboard vessel.
류재훈(RYU, JAE HOON) 한국영상제작기술학회 2017 영상기술연구 Vol.- No.26
As the Chinese movie market has exploded in recent years, examples of Korean-Chinese joint films are gradually increasing. However, most of the studies are thought to be in the view of the macro view that analyzed the flow of Korean – Chinese joint films from the huge industrial perspective of the movie industry in both countries. While there is no room for rethinking the significance of such an industrial perspective, it is also necessary to look at the flow of the Korean-Chinese joint film from a practical point of view and look at the working conditions and the situation of the staff working at the actual site. This study examines the situation of Korean cinematographers working in Chinese cinema in order to look at the film of both countries from a practical point of view when these Korean film staffs faced the actual working circumstance in the Chinese film making. Therefore, the purpose of this study is to examine the difference of the production system of the staffs of two countries, the labor conditions, and the contract specificities through experience of several staffs who worked in the recent joint film between Korea and China. It also examines the effects of the conflict between South Korea and China over the recent THAAD placement issue in South Korea, and discusses future prospects.
관객의 시각적 ‘몰입’을 위한 특수상영관의 현황과 전망
류재훈(RYU, JAE HOON) 한국영상제작기술학회 2018 영상기술연구 Vol.- No.28
Currently, multiplex theaters in Korea are entering a low growth phase. This study confirms that multiplex chains are expanding special high-value-added theaters such as 3D, 4D, IMAX to overcome such limitations. As part of such a trend, we are witnessing the recent expansion of screen X screening facilities and confirming that the production of screen X screening films has been actively being attempted at home and abroad. This special auditorium assists the viewer ‘s "immersion" through visual pleasure and assists the film narrative. While this special screening technique was once expected to ‘tow’ new film narratives and grammar, it is now clearly at a ‘supportive’level. Screen X screening technology is one of the few theater-related technologies that Korea has original technology. It is not known whether it will become the standard of theater in the future, but it is a desirable phenomenon that it is getting good evaluation at home and abroad and the related facilities are increasing. This study deals with the status of multiplexes in the Korean movie market, the status of the special screenings, the status of the screen X screen, the similarity with the cinerama technology, and the future prospects of the screen X.
류재훈(Ryu, Jae-Hoon) 한국영상제작기술학회 2016 영상기술연구 Vol.- No.24
In many factors of composing film, ‘Screen’ can be the most essential factor by looking aspect of conveying emotion and story. Because Film could be the most visual art beyond compare. As with the variety methods of making screen for effective storytelling, one of the most fundamental methodology is definitely Camera Movement. It is the one that distinguish stop motion image which is picture from cinematic image. The concept of still image from camera converts to moving image of film camera that makes running time which contains moving subject and moving camera. In other words, taking continuity of camera"s moving determines basis factor of cinema art. Among several camera moving, the most typical moving is tracking. Tracking could consider the most effective method to drag in the outside world of screen into camera screen. Therefore, to understand tracking shot could be the basic step to understand camera work. In this thesis describes functional feature and effect about tracking shot throughout searching practical case.
Heidegger 존재론에 비추어 본 교육공학 재개념화: 처방의 의미를 중심으로
류재훈 ( Jae-hoon Ryu ),유영만 ( Yeong-mahn You ) 한국교육공학회 2018 교육공학연구 Vol.34 No.3
‘잘 가르치는 일’로서 교육공학은 모종의 처방적인 활동임이 틀림없다. 이 점에서 교육공학은 일종의 도구적 성격을 갖는다. 하지만, 처방이 목적, 내용과 분리될 수 없다는 점은 교육공학을 단순히 도구적 성격만으로 설명할 수 없음을 명확히 드러낸다. 이처럼 교육공학의 본질을 파악하기 위해서는 교육의 목적과 내용과 연계하여 처방의 의미를 규명해야 한다. 이에 본 연구는 교육공학의 현상 이면에 보이지 않는 본질을 드러내고자 존재 의미에 대해 탐색한 철학자인 Heidegger의 철학에 비추어 교육공학을 재개념화하였다. Heidegger 존재론에 비추어 본 교육공학은 존재자적 교육공학과 존재론적 교육공학으로 구분된다. 이때 존재자적 교육공학은 실제적 지식, 실용교육, 전향적 관점의 적극적 처방을 지향한다. 반면, 존재론적 교육공학은 이론적 지식, 인간교육, 후향적 관점의 소극적 처방을 지향한다. 그러나 두 가지 교육공학은 서로 혼동해서는 안 되지만, 그렇다고 분리되어 존재하는 것도 아니다. 실제 교육 활동에 있어서 교육공학의 두 가지 존재 양식은 모두 필요하며, 경우에 따라서 두 가지 존재 양식은 상호보완적으로 작용할 수 있다. 본 연구에서는 교육공학의 두 가지 존재 양식을 통합할 수 있는 모형을 제시하였다. 이것은 이론적 지식의 축적을 통해 자신의 안목을 넓히고, 대상에 대한 깊은 이해를 바탕으로 실제적 처방이 이루어질 때, 비로소 심층적 지식을 전수할 수 있다는 것을 시사한다. As a “well-teaching activity” educational technology is prescriptive, thus having a kind of instrumental meaning. However, the fact that prescription cannot be separated from educational aims and subject matter clearly reveals that educational technology cannot be explained simply by its instrumental nature. In order to understand the essence of educational technology, it is necessary to identify the meaning of prescription in connection with the educational aims and subject matter. Therefore, this study re-conceptualized educational technology in the light of the philosophy of Heidegger, who has explored the meaning of being in order to determine the intrinsic value of educational technology. Educational technology in the light of Heidegger’s theory of being is divided into “ontic educational technology” and “ontological educational technology,” in accordance with the aspects of explanation and understanding of existence. “ontic educational technology” pursues practical knowledge, practical education, and positive prescription from the perspectives of prospective thinking. On the other hand, “ontological educational technology” pursues theoretical knowledge, humanity education, and negative prescription from the perspectives of retrospective thinking. However, although two aspects of educational technology are sharply contrasted, they do not exist separately. In actual educational activities, both aspects of educational technology are necessary and, in some cases, can complement each other. In this study, we present a model, which integrates these two different aspects of educational technology. This implies that the not-yet-manifested knowledge can be transferred only when practical prescriptions are made, based on the accumulation of theoretical knowledge from a teacher's own existential awakening and caring for the learners' being.