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박문호(Moonho Park),고희동(Heedong Ko),변혜란(Hyeran Byun) 한국정보과학회 2000 정보과학회논문지 : 소프트웨어 및 응용 Vol.27 No.8
본 논문에서는 인간의 중요한 감정표현 수단인 얼굴표정을 분석하는 방법을 제시하였다. 제안된 방법에서는 기준얼굴과 그의 혼합 비율의 관점에서 얼굴표정을 분석한다. 기준얼굴은 인간의 대표적인 얼굴표정인 놀람, 두려움, 분노, 혐오, 행복, 슬픔, 그리고 무표정으로 설정하였다. 얼굴 모델의 생성을 위해 일반 얼굴 모델이 얼굴영상으로 정합하는 방법을 사용하였다. 기준얼굴의 혼합 비율을 구하기 위해 유전자 알고리즘과 Simulated Annealing 방법을 사용하였고 탐색된 얼굴표정 정보를 이용한 얼굴표정 생성 실험을 통해 제안된 방법의 유용성을 입증하였다. Facial expression is an effective tool to express human emotion. In this paper, a facial expression analysis method based on the base faces and their blending ratio is proposed. The seven base faces were chosen as axes describing and analyzing arbitrary facial expression. We set up seven facial expressions such as, surprise, fear, anger, disgust, happiness, sadness, and expressionless as base faces. Facial expression was built by fitting generic 3D facial model to facial image. Two comparable methods, Genetic Algorithms and Simulated Annealing were used to search the blending ratio of base faces. The usefulness of the proposed method for facial expression analysis was proved by the facial expression synthesis results.
양극성 자기유도센서의 성능 향상을 위한 퍼지 추론 시스템
박문호(Moonho Park),조현학(Hyunhak Cho),김광백(Kwangbaek Kim),김성신(Sungshin Kim) 한국지능시스템학회 2014 한국지능시스템학회논문지 Vol.24 No.1
자기테이프를 사용하는 대부분의 경량무인운반차들(AGCs)은 디지털 자기유도센서를 사용한다. 디지털 자기유도센서는 On/Off 타입으로 자기테이프의 위치측정 정밀도가 10?50 mm의 오차를 가진다. 또한 경량무인운반차에 설치된 모터의 자기장이나 주변 환경의 외부 자기장, 지자기 등으로 인하여 정확한 위치를 추정하기 힘들다. 이러한 오차로 인하여 경량무인운반차의 주행 시에 잦은 흔들림이 발생하게 되고, 정도가 심할 경우 이탈현상이 발생하게 된다. 따라서 본 논문은 양극성 아날로그 자기유도센서에 퍼지 추론 시스템의 적용을 제안한다. 퍼지는 다른 알고리즘에 비하여 내고장성과 불확실성에 강인하고, 실시간 작동에 유리하며, 비선형시스템에 사용하기 적합하다. 선행과제에서 제작한 양극성 아날로그 자기유도센서로 threshold를 두어 디지털 자기유도센서를 형성하고, 이를 이용하여 자석위치 값을 계산한다. On으로 인식된 아날로그 Hall sensor의 출력을 이용하여 퍼지 추론 시스템을 설계하고, 그 출력으로 디지털출력 값을 개선한다. 실험 결과, 제안된 방법이 기존의 자기유도센서보다 성능이 향상된 것을 확인하였다. Most of light duty AGVs(AGCs) using tape of magnetic for the guide path have digital guidance magnetic sensor. Digital guidance magnetic sensor using magnet-tape is on/off type and has positioning error of magnet-tape as 10 ?50 mm. AGC using this sensor doesn"t induce accurate position of magnet-line which is magnet-tape because of magnetic field which motor in AGC creates, outer magnetic field, earth"s magnetic field, etc. AGC when driving wobbles due to this error and this error can cause path deviation. In this paper, we propose fuzzy inference system for improvement of bipolar analog magnetic guidance sensor performance. Fuzzy is suitable in term of fault tolerance, uncertainty tolerance, real-time operation, and Nonlinearity as compared with other algorithms. In previous research, we produced bipolar magnetic guidance sensor and we set the threshold in order to calculate digital values of magnet position. Fuzzy inference system is designed using outputs of Analog hall sensors. Magnet position calculated by digital method is improved by outputs of this system. In result, proposed method was verified by improving performance of magnetic guidance sensor.
박문호(Park Moonho),황의식(Hwang Euisik),허주녕(Heo Joonyung) 한국농촌경제연구원 2015 한국농촌경제연구원 기본연구보고서 Vol.- No.-
Since the promotion of rice tariffication, the competitiveness enhancement of domestic rice farming has emerged as a major policy challenge. Although the rice farming is recognized as an agriculture with relatively low profitability while rice prices fall due to excessive rice production, etc., it can be referred to as a critical task to maintain a certain level of rice farming for food security, maintaining multi-functionality of agriculture. In order to secure the competitiveness of rice agriculture, it is necessary to secure the production system with low-cost and high quality by field units through a large-scaled and organized production complex, and to establish the innovative management system that can lead to such complexation and diversification for enhancing the agricultural income base. This study intends to place a focus on the presentation of a promotion model suitable for regional characteristics through understanding and evaluation of the status of agricultural firms by the fields, and also on the research that leads to the income source diversification through co-work for a more effective model. Major contents of this study are as follows. Chapter 2 reviewed the primary view on the promotion of farming firms and its expected effect. Specifically, this chapter examined the challenges that rice farming and the rice industry are confronted with, and the expected effects that agricultural firms have. Chapter 3 reviewed the trends and issues of the rice farming firm promotion policy. Specifically, this chapter examined the trends of policies and others related to rice farming firms conducted by the central government and local governments, and their problems in view of policy implementation. Chapter 4 reviewed the status and operating practices of the rice farming firms. In particular, this chapter examined the management status, management performance and best practices of 55 facility and equipment supporting businesses, and reviewed the implications associated with the promotion of them. Chapter 5 examined the trends and practices of colonized agricultural policy in Japan. Finally, chapter 6 presented the direction of promotion of rice farming firms for rice agriculture efficiency and the efficiency policy for rice farming firms promotion. As the major research methods, first, the preceding study related to rice farming firms and the policy data of the central and local governments were reviewed. Second, the survey was carried out to examine the actual status of rice farming firms. Third, the practices of rice farming firms were surveyed. Fourth, the case studies were carried out on institutional and policy trends in Japan. Fifth, policy experts meetings were held. The basic directions of rice farming promotion are: ① social and economic organization management firms, ② fostering regionally differentiated business models, and ③ establishment of rice agricultural supporting systems by regions.