• 대한공간정보학회지
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• 제5권2호
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• pp.111-119
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• 1997

인체에 대한 정밀측정과 분석체계의 구축은 인체공학 연구에 중요한 의미를 지니고 있다 본 연구는 인체형상 모니터링을 위한 수치영상의 정확도 향상에 관한 연구로서 다양한 기하학적 조건에 따른 수치영상의 정확도를 분석하고 도출한 최적의 촬영조건을 인체형상에 적용하였다. 표준편차 1mm 이내의 3차원 수치자료를 획득하여 다양한 공간분석과 3차원 모니터링을 수행함으로써 인체공학 분야에 기초자료를 제공할 것으로 기대된다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제11권2호
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• pp.1118-1133
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• 2017

Computer vision-based human activity recognition (HAR) has become very famous these days due to its applications in various fields such as smart home healthcare for elderly people. A video-based activity recognition system basically has many goals such as to react based on people's behavior that allows the systems to proactively assist them with their tasks. A novel approach is proposed in this work for depth video based human activity recognition using joint-based motion features of depth body shapes and Deep Belief Network (DBN). From depth video, different body parts of human activities are segmented first by means of a trained random forest. The motion features representing the magnitude and direction of each joint in next frame are extracted. Finally, the features are applied for training a DBN to be used for recognition later. The proposed HAR approach showed superior performance over conventional approaches on private and public datasets, indicating a prominent approach for practical applications in smartly controlled environments.

• 대한기관식도과학회지
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• 제17권1호
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• pp.40-45
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• 2011

Background and Objectives Detailed information about the impacted esophageal foreign body is essential for safe extraction. Three dimensional reconstruction technique was applied to know shape, size and location of the simulative foreign bodies of stone, hyoid bone and endotracheal tube. Materials and Methods Submandibular gland stone, hyoid bone and endotracheal tube were used to simulate impacted foreign bodies. Axial CT, multi-planar reconstruction, volume of interest and virtual camera of Rapidia software were used to get information about the simulative foreign bodies from CT data. Shape and size were compared with the real materials. Exact locations were measured in appropriate modes of Rapidia. Results Shapes of the simulative foreign bodies matched well with the real materials. Size and location could be measured in various modes with some variable results. Conclusion 3D technique can be applied to get information about the simulative foreign bodies. This technique could be applied to the impacted esophageal foreign body.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제12권4호
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• pp.1854-1868
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• 2018

A wireless body-sensor network (WBSN) refers to a network-configured environment in which sensors are placed on both the inside and outside of the human body. The sensors are much smaller and the energy is more constrained when compared to traditional wireless sensor network (WSN) environments. The critical nature of the energy-constraint issue in WBSN environments has led to numerous studies on the reduction of energy consumption of WBSN sensors. The transmission-power-control (TPC) technique adjusts the transmission-power level (TPL) of sensors in the WBSN and reduces the energy consumption that occurs during communications. To elaborate, when transmission sensors and reception sensors are placed in various parts of the human body, the transmission sensors regularly send sensor data to the reception sensors. As the reception sensors receive data from the transmission sensors, real-time measurements of the received signal-strength indication (RSSI), which is the value that indicates the channel status, are taken to determine the TPL that suits the current-channel status. This TPL information is then sent back to the transmission sensors. The transmission sensors adjust their current TPL based on the TPL that they receive from the reception sensors. The initial TPC algorithm made linear or binary adjustments using only the information of the current-channel status. However, because various data in the WBSN environment can be utilized to create a more efficient TPC algorithm, many different types of TPC algorithms that combine human movements or fuse TPC with other algorithms have emerged. This paper defines and discusses the design and development process of an efficient TPC algorithm for WBSNs. We will describe the WBSN characteristics, model, and closed-loop mechanism, followed by an examination of recent TPC studies.

• 인터넷정보학회논문지
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• 제7권1호
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• pp.65-74
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• 2006

인체 추적은 차세대 인간과 컴퓨터사이의 상호작용 (HCI)의 필수요소이다. 본 논문에서는 구성요소에 기반을 둔 인체 모델을 이용하여 인체의 각 부위를 검출하여 자세를 추정하고 아바타의 동작을 구현하는 방법을 제안한다. 인체 각 부위의 색상정보와 함께 연결정보, 위치정보 등을 이용하여 인체 각 부위가 검출되고 인체 모델의 각 구성요소에 매칭된다. 이렇게 구한 2D의 인체 자세 정보는 다음 프레임에서 유사도 계산을 통해 사람 추적에 이용될 수 있다. 이 때, 각 구성요소의 상대적인 위치 관계를 이용하여 깊이 정보를 추출하고 이를 움직임 방향으로 변환하여 2-1/2D 인체 모델을 구한다. 인체 각 부위는 자세와 방향성으로 모델링 되고 연결된 3D 아바타의 각 부분은 인체 모델로부터 넘겨받은 정보를 이용하여 3D 회전을 적용함으로써 실시간 아바타 애니메이션을 구현하게 된다. 다양한 자세를 포함하고 있는 실험 동영상에 대해 90%의 인체 추적율을 얻었고, 처리된 프레임 수가 늘어남에 따라 모델이 체계화되어 추적율이 꾸준히 증가하는 결과를 나타냈다.

• 한국의류산업학회지
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• 제24권1호
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• pp.117-126
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• 2022

This study aims to analyze the sizing information of women's ready-to-wear pants as indicated on online retail websites and to suggest better sizing communication that can assist customers in making successful apparel size selections. We gathered size specifications and size reference information for basic straight pants from 34 online apparel retail websites. Although the Korean standard recommends labeling the body dimension-based sizing code and specification, most websites preferred to use various types of sizing codes. Body measurements were only used by a few websites, and garment dimension descriptions were the most common method to indicate product size. Many websites provided size reference information through customer review boards and fit model images, however, there was insufficient body size information to allow customers to infer the fit of their body type. When using the size guidance tools, the major data input points were stature and weight measurements. However, the waist measurements of pants sizes guided only by stature and weight values revealed inconsistent ease allowance for corresponding body size populations, especially in the overweight group. Based on our findings, we propose a more effective method of communicating the size information of pants online. We expect that this will contribute to the efficiency of online apparel product display and build a better shopping environment that satisfies both sellers and consumers.

• 한국식품영양학회지
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• 제22권2호
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• pp.286-292
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• 2009

This study was conducted to examine the effects of an 8-week weight loss program, on body composition, body shape satisfaction, body shape esteem in 15 obese children. This program included nutritional education and regular physical fitness. After completion of this program, height and body weight increased slightly but body compositions changed. BMI, degree of obesity, and body fat levels dropped slightly, however these differences were not significant. After the 8-week program body weight increased from $63.61{\pm}8.80\;kg$ to $64.07{\pm}9.11\;kg$, degree of obesity and BMI decreased from $151.73{\pm}13.62%$, and $29.08{\pm}2.35$ to $146.60{\pm}12.92%$, and $28.57{\pm}2.26$, respectively, and the percentage of body fat decreased slightly from $42.70{\pm}4.87%$ to $41.46{\pm}4.88%$. There were slight changes in weight of body muscle and lean body mass from $19.62{\pm}3.48\;kg$ and $36.17{\pm}5.78\;kg$ to $20.30{\pm}3.64\;kg$ and $37.16{\pm}6.18\;kg$, respectively. LBM and amount of muscle were higher after this weight loss program. The body shape esteem score increased from $7.60{\pm}4.01$ to $9.00{\pm}6.20$. There was no significant difference in body shape satisfaction before and after the program, and the participants also wanted to be leaner. Finally, body weight, BMI, and body fat showed negative correlations to body shape esteem.

• 대한가정학회지
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• 제46권2호
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• pp.73-83
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• 2008

The focus of this research was concerned with studying lower body type for Korean adult females. information from the measuring values based on research on the physical standard of the nation(2004) were summarized, in addition a factor of the need for appropriate fit in boots cut jean wear, basic lower body part applying to each item had to be taken into consideration to enhance sizing suitability. The body type are classified into three kinds by means of factor analysis and cluster analysis. Type 1 referred to the fat lower body, having thick rounding waist. compared to other body parts, and long leg according to its proportion. Type 2 represented medium stature but with a large skeleton structure of lower body. Type 3 represented a the long lower body having slender rounding waist. This study was attempted to evaluate the fitness of boots cut jeans pattern for women using 3D Clothes Modeling Software.

• 한국항공우주학회지
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• 제43권8호
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• pp.692-698
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• 2015

본 논문에서는 원형 제한 3체 문제의 불변위상공간을 이용하여 지구-달 또는 행성간의 궤적을 설계하고 해석하는 기법을 소개한다. 2체 문제를 조합하는 고전적인 방식 대신에 원형 제한 3체 문제에 대한 운동방정식, 궤적의 동적 특성, 평형점 주변의 리아프누프 궤도와 불변위상공간의 특성을 기술한다. 원형 제한 3체 문제의 불변위상공간을 이용했을 때, 지구-달 시스템의 궤적설계 방식과 태양-목성 시스템의 경계면에서의 초기조건에 따른 궤적 특성을 수치 시뮬레이션을 통해 확인한다. 본 논문에서 제안한 원형 제한 3체 문제의 불변위상공간을 이용한 궤적설계 기법은 저추력 또는 저에너지를 이용한 달탐사 또는 행성탐사 임무 등에 활용 가능할 것이다.

• 대한간호학회지
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• 제33권3호
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• pp.331-338
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• 2003

Purpose: The purpose of this study was to investigate the relationships among variables of body image, self-esteem and depression in college female students according to the normal and overweight. Method: The subjects of this study consisted of 245 college female students. The data was collected through personal interviews using questionnaires from May to June of 2001. The data was analyzed by the SPSS computer program, and it included descriptive statistics, x$^2$-test, t-test and the pearson correlation coefficient. Result: Demographics provided a significant difference in grade, household income, weight control experience. There was a perceived health status difference, according to the normal and overweight subjects. There was a significant difference in body image, self-esteem and depression between the two groups. There was a significant positive correlation between body image and self-esteem, and negative correlation between body image and depression, and self-esteem and depression in college female students. Conclusion: The Findings of this study give useful information to construct further studies in intervention program relating overweight control for college female students.