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다수의 카메라를 이용한 고해상도 360도 동영상 생성 시스템
정진욱(Jinwook Jeong),전경구(Kyungkoo Jun) 한국멀티미디어학회 2016 멀티미디어학회논문지 Vol.19 No.8
This paper develops a 360 degree video system using multiple off-the-shelf webcams and a set of embedded boards. Existing 360 degree cameras have shortcomings that they do not support real-time video generation since recorded videos should be copied to computers or smartphones which then provide stitching. Another shortcoming is that wide FoV(Field of View) cameras are not able to provide sufficiently high resolution. Moreover, resulting images are visually distorted bending straight lines. By employing an array of 65 degree FoV webcams, we were able to generate videos on the spot and achieve over 6K resolution with much less distortion. We describe the configuration and algorithms of the proposed system. The performance evaluation results of our early stage prototype system are presented.
U-Health System 활용이 대사증후군 중년여성의 신체구성, 체력, 대사증후군 위험요인, 신체활동량 및 수면에 미치는 영향
정진욱(Jinwook Chung),정대준(Dae-Jun Jeong),성순창(Soon-Chang Sung) 한국생활환경학회 2013 한국생활환경학회지 Vol.20 No.3
This study investigated the effects of applying u-health system in managing metabolic syndrome of middle aged women. 28 women with metabolic syndrome participated in this study and divided into U-Health group(UG, n=15) and control group(CG, n=15). Anthropometric measurements, biochemical analyses, health related fitness and sleep were measured before and after the intervention. Participants in UG periodically check their body composition, blood pressure, and physical activity by using U-Health care equipments and U-Health zone. Comparison between groups were made using two-way repeated ANOVA measures with a statistical significant level of α =.05 Main results of the present study were as follows: 1) weight, fat free mass, fat mass, and BMI improved significantly in both groups. 2) sit-up and sit and reach significantly in both groups. 3) metabolic syndrome risk factors, waist circumference, glucose, systolic blood pressure, and diastolic blood pressure decreased significantly in both groups, whereas HDL-C increased significantly in both groups 4) total and average physical activity improved significantly in UG group. 5) sleep variances did not changed significantly in both groups. It was concluded that U-Health system to exercise program seems effective in managing metabolic syndrome. However, if enough time to adjust to U-Health system is provided, it could be much effective aids.