• 대한전기학회:학술대회논문집
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• 대한전기학회 1999년도 하계학술대회 논문집 G
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• pp.3004-3006
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• 1999

In this paper, we present the ball position and path plain method for the robot-soccer using optical flow. As we compare a optical flow method with a general method within the accurate and effective ball position information of robot-soccer or the path planning, we prove accurate and effective optical flow algorithm to apply ball position and path plain for robot-soccer

• 산업공학
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• 제20권2호
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• pp.133-141
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• 2007

As the sales of the Sports Toto, the Korean lottery on sports games, have increased significantly in recent five years, interest in predicting the various results of sports matches has also been raised. Dixon and Coles (1997) proposed a bivariate Poisson model to predict the results of English soccer league matches. In this paper, we pay attention to the physical condition of players that may affect soccer match results and revise Dixon and Coles' model to consider probable fatigue due to the players' short rest followed by their frequent matches. We observed the fatigue effect in the match results, and found positive betting returns available when using our prediction model. Furthermore, the validity of probability-based odds in European and Korean betting markets is analyzed.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1997년도 한국자동제어학술회의논문집; 한국전력공사 서울연수원; 17-18 Oct. 1997
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• pp.617-620
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• 1997

We have built a robot soccer system to participate in MIROSOT97. This paper represents hardware specification of our system and our strategy. We select a centralized on-line system for a soccer game. The paper explains hardware specifications of our system for later development. Also, the paper explains our strategy from two viewpoints. From the viewpoint of cooperation, some heuristic ideas are implemented. From the viewpoint of path plan, Cubic spline is used with cost function which minimized time, radius of curvature for smoothness, and obstacle potential field. Direct comparison will be realized in MIROSOT97.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2013년도 춘계학술대회 논문집
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• pp.1453-1454
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• 2013

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2010년도 추계학술대회 논문집
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• pp.39-40
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• 2010

• 방송공학회논문지
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• 제8권1호
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• pp.54-62
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• 2003

본 논문은 축구경기에서 골인과 같은 중요한 장면을 영상처리 기술과 컴퓨터 그래픽 기술을 이용하여 3차원으로 재연할 수 있는 3차원 축구재연 시스템에 대해 소개한다. KBS 기술연구소에서는 축구경기 중계방송에서 시청자에게 새로운 영상을 제공하기 위해 Vplay라는 3차원 축구재연 시스템을 개발하였다. Vplay는 컴퓨터 그래픽을 이용하여 축구경기에서 흥미롭고 중요한 장면을 재연한다. Vplay는 입력 비디오 시퀀스로부터 색상정보를 기반으로 신수 영역을 추출하고, 전역 이동 추정 모델과 운동장 좌표 변환모델을 이용하여 운동장에서의 선수의 정확한 위치를 추정한다. 이 결과 데이터는 가상 캐릭터의 움직임을 생성하는 이동동작 생성기로 입력되어 가상 캐릭터의 기본적인 움직임을 자동 생성한다. 그리고 미리 제작된 동작과 모델 라이브러리를 통해서 빠르고 편리하게 중요 장면을 재연할 수 있다. Vplay는 빠른 제작시간을 요구하는 축구중계 생방송용으로 개발되었으며 지난 월드컵 경기와 아시안 게임에 효과적으로 활용하였다.

• 패션비즈니스
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• 제24권3호
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• pp.17-29
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• 2020

This study aimed to produce fiber stretch sensors for smart soccer socks to prevent injuries during training. A sensor was manufactured with stretchable fabric and tested to ensure convenience during training. In order to manufacture the fiber stretch sensor, a CNT dispersion solution was applied to an e-band and elastic polyester fabric, and the performance of the sensors was evaluated by a tensile test. Performance evaluation showed that both of the tested fabrics are excellent for this purpose. Both sensors were attached to socks to create prototype wearable devices, and an experiment was conducted to determine whether a resistance change accompanying relaxation and contraction of the gastrocnemius muscle could be detected. In order to accurately evaluate performance as a sensor, the fabric was stretched 20 times at low speeds of 1 Hz and 0.5 Hz. A change in resistance due to tension was observed, with both the E-band and the stretchable poly fabric showing high sensitivity and high reproducibility. Both can be used as relaxation/contraction sensors. Smart soccer socks were made using the two materials, and an evaluation was conducted. Tensile tests were done on the smart soccer socks; the tests were done 20 times per sock, and the sensor showed a stable resistance change between 30 and 40 ohms depending on the tension of the sensor. As a result, we confirmed that smart soccer socks with stretch sensors made of E-bands can measure changes in the gastrocnemius muscle.

• Physical Therapy Rehabilitation Science
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• 제7권2호
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• pp.78-82
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• 2018

Objective: The purpose of this study was to determine the effect of wearing a pelvic compression belt on ball speed and accuracy in instep shoots of youth soccer players. Design: Randomized cross-over design. Methods: We included 20 male junior soccer players with experience of more than 5 years. Participants were randomly assigned to two conditions: application of a pelvic compression belt and instep shooting or no application. Instep shooting was performed three times at a distance of 20 meters from the position of the goal post, and the ball speed was measured using a speed gun at a position 5 meters behind the goal post. The shooting accuracy was measured based on a 5-point scale. The shooting accuracy was measured by scoring 5 points at 2.44 meters in the middle of the goal area of area A, 3 points at 2.44 meters in the goal area of area B, and 0 in the case of shooting outside the goal area C. Results: After applying a pelvic compression belt, the mean speed of the ball was significantly increased (p<0.05). The maximum speed of the ball was significantly increased (p<0.05). The accuracy of the ball was significantly increased (p<0.05). Conclusions: Through this study, we expect that the use of the pelvic compression belt can be applied as a training method to improve the shooting ability of soccer players. Clinically, pelvic compression belts are expected to help rehabilitation soccer players to improve their shooting accuracy.

• 대한정형도수물리치료학회지
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• 제29권2호
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• pp.49-57
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• 2023

Background: This study aims to investigate the effect of lower limb strengthening training combined with electro muscle stimulation on the quadriceps femoris muscle activity of soccer players. Methods: Thirty university soccer players were selected as study subjects and divided into a lower limb strengthening training group combined with EMS (Group I) and a general lower limb strengthening training group (Group II), and 15 subjects were randomly assigned. After receiving general soccer training, subjects in this study additionally mediated lower limb strengthening training combined with EMS and general lower limb strengthening training for 26 minutes, 3 times a week for 8 weeks. Quadriceps femoris muscle activity was analyzed before mediation. Vastus medialis, vastus lateralis, and rectus femoris were measured with maximum isometric contraction in the manual muscle test position in order to analyze leg muscle activity. The same items as above were re-measured and a between-group analysis was conducted after 8 weeks of mediation. Results: As a result of comparative analysis of lower extremity muscle activity between groups, the lower limb strengthening training group combined with EMS showed a statistically significant difference in lower extremity muscle activity compared to the general lower limb strengthening training group. Conclusion: As a result, it was found that lower limb strengthening training combined with EMS was more effective in improving quadriceps femoris muscle activity. Based on this study, we are going to provide basic data on the possibility of using EMS in the field of sports rehabilitation for soccer players.

• 한국응용과학기술학회지
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• 제40권2호
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• pp.301-308
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• 2023

본 연구는 국내 유소년 축구클럽 브랜드 아이덴티티, 가치, 충성도 간의 구조적인 모형과 효과성을 검증하여 축구클럽들이 효율적인 브랜드 전략을 수립하는 기초자료를 제공하고자 했다. 따라서 서울, 경기도, 충청도 지역 유소년 축구클럽 회원의 학부모들을 표본으로 선정했으며, 372부의 자료를 최종분석에 활용했다. 자료처리는 SPSS(ver. 21.0) 프로그램으로 빈도분석, 신뢰도를 검증하는 내적일관성을 실시했다. 또한 AMOS(ver. 20.0) 프로그램으로 확인적 요인분석, 상관분석, 구조방정식 모형분석, 효과성과 유의성을 검증하는 붓스트랩 BC법을 적용했다. 연구결과 첫 번째로 국내 유소년 축구클럽 브랜드 아이덴티티는 가치에 영향이 있는 것으로 나타났다. 둘째, 국내 유소년 축구클럽 가치는 충성도에 영향이 있는 것으로 나타났다. 셋째, 국내 유소년 축구클럽 브랜드 아이덴티티는 충성도에 영향이 있는 것으로 나타났다. 마지막으로 국내 유소년 축구클럽 브랜드 아이덴티티 및 충성도 간의 가치는 부분매개효과가 있는 것으로 나타났다.