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상부에서 획득한 깊이 영상에서 다양한 자세를 취한 사용자검출
최태원(Tae-Won, Choi),김대환(Dae-Hwan, Kim),김기홍(Ki-Hong, Kim) 한국HCI학회 2017 한국HCI학회 학술대회 Vol.2017 No.2
사람 검출 기술은 많은 분야에서 중요한 요소로 사용해 왔다. 지금까지는 주로 정면에 서 있는 사람을 검출하는 연구를 진행해 왔다. 하지만 정면에 카메라를 설치하면 다른 물체가 사람을 가릴 수 있다는 문제가 있었다. 또, 최근에는 엔터테인먼트, 드론 등 다양한 분야에서 상면에서 봤을 때 사람 검출 기술을 요구하고 있다. 우리는 상부에서 획득한 깊이 영상에서 다양한 자세를 취한 사람 검출 기술을 연구했다. 깊이 정보를 이용해 사람의 모습을 표현하기 위해 각도 정보를 이용했다. 카메라에서 물체의 거리에 따라 크기가 변하는 검출 창을 만들었으며 그 안에서 3 개의 점을 지정해 2 개의 벡터를 구해 코사인 유사도를 계산했다. 사람의 특징을 표현해주는 최적의 특징 추출 위치를 찾아내기 위해 에이다부스트를 이용했다. 3 개의 점을 한 집합이라 하고 모든 집합을 에이다부스트에 투입한 후 약분류기를 200 개까지 선정하면서 성능을 확인했다. 사람 데이터 2,000 여개 사람이 아닌 데이터 22,000 여개를 이용해 분류기를 훈련하고 평가해 97.4%의 정밀도와 98.3%의 재현율을 얻었다. 이것을 라우터의 방식과 비교했는데 우리 방식은 정밀도가 약 12% 재현율이 약 11% 우수했다.
최태원(Choi Tae-Weon),김정주(Kim Jung-Joo),김익겸(Kim Ick-Kyum) 경희대학교 스포츠과학연구원 2005 체육학논문집 Vol.33 No.-
A study has been done to reveal injuries suffered by 152 Korean professional baseball players during their exercises. All these players belong to KBO(Korean Baseball Association). 1. According to our study, among 1385 injuries suffered by the players, injuries in their hands were the most amounting to 475(34,29%), and next followed injuries in upper legs 263(18,99%),in their feet 235(16.97%), lower legs 211(15,23%), head 86(6,21%), neck 58(4,19%), body 57(4,11%) each. 2. More concretely there were studied 3224 injuries. Among these injuries in muscles and tendons were 1665(51,67%), in skin 972(30,15%), in bone 320(9,92%), in joints 189(5,86%),in nervous system 77(2,39%). 3. Reasons for injuries were different. Among 1283 cases, 290 cases(22,60%) happened by the balls thrown by pitchers, 288 cases happened during sliding, 206(16,05%) by the balls hit by batters, 182 cases during pitching, and other cases were 132. 4. Among 1484 injuries, 1028(69,17%) cases were caused by the players" own faults, 292 cases(19,65%) were by the defects in facilities, and 166(11,18%) were by the defects in equipment. 5. Among 778 cases, 371(47,68%) injuries happened in the afternoon, 296 cases at night(38,04%), and 111(14,28%) happened in the morning. 6. Among 913 cases, 292(32,53%) injuries happened in summer, 255(27,93%) were in fall, in winter 181(19,82%), in spring 180(19,71%). 7. Among 880 injuries, 284(32,27%) cases occurred during official games, 224(25,42%) were during team training, 187(21,25%) were during winter training, 96(10,91%) happened during nonofficial games, during personal training 55(6,25%) cases, and in other cases were 34(3,87%). 8. On survey on the treatment for the injuries, among 152 respondents, 126(82,98%) players answered that there were immediate emergency treatments and 116(76,31%) players answered that they were given emergency treatments by their trainers. After being injured, 74(48,69%) respondents answered that they were treated in specified rehabilitation hospitals. 52(34,21%) players answered that they were given physical therapy. 9. On what measures they took after injuries, among 152 players, 80(52,63%) answered they used taping(52,63%), and 73 respondents(48,03%) answered they were fully recovered.
초등학교 축구부 활동만족이 전반적 학교 생활만족에 미치는 영향
최태원(Choi tae-wan),김장환(Kim Jang-Hwan),박진기(Park Jin-kee),엄대영(Eum Dae-Young) 한국체육과학회 2003 한국체육과학회지 Vol.12 No.1
This study aims to investigate how the activities in the football teams affect the satisfaction with the general activities of the football teams, and how the satisfaction with the general activities of the football teams affects the satisfaction with the school life, with the players in the football teams of the primary schools as the subjects. For this purpose, 190 players in the football teams of 8 primary schools in Daegu Metropolitan City were chosen as the subjects of the sampling. 181 questionnaires were chosen as the effective samples with the exception of those questionnaires whose answers were insincere and in which some contents were omitted. The reliability test of the measuring instruments showed a comparatively high coefficient .6375~.7811 of Chronbach' α. The results of the validity test by means of the confirmatory factor analysis showed that the load value of each measured value was over 0.5 and that each measured value had the convergent validity. The data were processed by using the programs of SPSS/PC + 10.0, and covariance structure analysis was adopted for the statistical analyses of this study. The results obtained through the structural model, on the basis of the above-mentioned methods of the study and the analyses of the data, are as follows: First, among the activities of the football teams in the primary schools, the relations with the fellow players, the relations with the leaders, and the participation in the games had significant effects on the satisfaction with the general activities of the football teams, but the training activities did not show significant effects.
최태원(Taewon Choi),최익수(Iksoo Choi),윤지희(Jeehee Yoon),이건배(Keonbae Lee) 한국정보과학회 1996 한국정보과학회 학술발표논문집 Vol.23 No.2A
환경관리 시스템은 다량의 공간, 비공간 정보를 관리하여 환경 모니터링, 분석 및 예측, 환경보전 방법 제시 등 복합적인 기능을 제공하는 시스템이다. 이와같은 시스템을 구현하기 위하여는 기존의 지리정보 시스템의 기능 외에 지식베이스 관리 및 추론 기능 등이 필요하다. 본 논문에서는 지리정보시스템과 전문가 시스템을 활용한 환경관리 시스템의 구현 및 그 주요 기능에 대하여 논한다. 지식베이스를 활용한 추론 기능은 의사 결정 지원 기능 외에도 사용자 환경 개선 및 복합 공간 객체의 표현, 공간 질의 처리 등에 적극 활용될 수 있다. 특히 본 시스템에서는 연역 추론 방식에 의한 협력질의응답 기능을 제공하여 사용자에게 유연하고 편리한 사용자 환경을 제공한다.
프로축구 지도자의 리더십유형이 임파워먼트와 신뢰에 미치는 영향
최태원(Tae Won Choi),김장환(Jang Hwan Kim),최명수(Myung Soo Choi),박진기(Jin Gi Park),엄대영(Dae Young Eum) 한국사회체육학회 2008 한국사회체육학회지 Vol.0 No.34
This lays its purpose on ascertaining the influence of pro soccer coaches` leadership on empowerment, trust and organizational effectiveness, and what is important in this study is to present right directions for coaches` leadership and provide basic theoretical materials which can be a help in terms of strategic human resource management in organizations. The whole soccer players in all of pro soccer teams as of 2007 were chosen as a population, and based on 382 available samples selected by random sampling, a statistics package, the SPSS WIN 15.0 was used for analysis. Analysis methods in detail are as below. First, in order to test the validity of this study, exploratory factor analysis was conducted for variables such as empowerment, trust, job satisfaction, organizational commitment, and turnover intention, reliability was tested by calculating Cronbach`s α. Second, in order to examine the influence of pro soccer coaches` leadership on empowerment, trust, organizational effectiveness, multiple regression analysis was carried out, and also in order to find out the causal relational direction among variables, the path model was presented. Based on the above research purposes and data analysis, the following conclusions were derived.