원격 탐사 영상 정합을 위한 딥러닝 기반 특징점 필터링

성준영(Jun-Young Sung),이우주(Woo-Ju Lee),오승준(Seoung-Jun Oh) 한국방송·미디어공학회 2021 방송공학회논문지 Vol.26 No.1

구조물 검출 네트워크 및 특징점 필터링을 이용한 원격 탐사 영상 정합

성준영(Jun-Young Sung),이우주(Woo-Ju Lee),오승준(Seoung-Jun Oh) 한국방송·미디어공학회 2020 한국방송공학회 학술발표대회 논문집 Vol.2020 No.7

본 논문에서는 원격 탐사 영상 정합에서 정확도는 유지하면서 특징점 매칭 (Matching) 복잡도를 줄이기 위해 입력 영상을 전처리하는 구조물 검출 네트워크를 이용한 원격 탐사 영상 정합 방법을 제안한다. 영상 정합의 기존 방법은 입력 영상에서 특징점을 추출하고 설명자 (Descriptor)를 생성한다. 본 논문에서 제안하는 방법은 입력영상에서 특징점 매칭에 영향을 미치는 구조물만 추출하여 새로운 영상을 만들어 특징점을 추출한다. 추출된 특징점은 필터링 (Filtering)을 거쳐 원본 영상에 매핑 (Mapping)되어 설명자를 생성하여 특징점 매칭 속도를 향상시킨다. 또한 구조물 검출 네트워크에서 학습 영상과 시험 영상의 특성의 차이로 생기는 성능 저하 문제를 개선하기 위해 히스토그램 매핑 기법을 이용한다. 아리랑 3 호가 획득한 원격 탐사 영상에 대한 실험을 통해 제안하는 방법은 정확도를 유지하면서 계산 시간을 SURF 보다 87.5%, SIFT 보다 92.6% 감소시킬 수 있다.

Coronavirus Pandemic 이후 신체활동 및 식습관 변화 : 국내 엘리트 청소년선수 대상 온라인 조사

성준영 ( Jun-young Sung ),박상섭 ( Sang-sub Park ),오태웅 ( Tae-woong Oh ) 한국스포츠정책과학원 2021 체육과학연구 Vol.32 No.4

[목적] 이 연구의 목적은 COVID-19 대유행 전후의 엘리트 성인 선수들의 활동과 식습관을 조사하여 엘리트 청소년 선수들에게 COVID-19가 미치는 영향을 파악하는 것이었다.[방법] 총 917명의 엘리트 청소년 선수들을 대상으로 실시되었으며, 19개의 스포츠와 6개의 그룹으로 분류하였다. 설문지는 COVID-19 이전과 이후의 신체 활동, 수면 및 식습관에 대한 인구통계학적 요인 및 신체활동, 식습관에 관한 문항이 포함되어 총 44개 설문문항으로 구성되었다. 모든 자료의 통계적 유의수준p <0.05로 설정하였다.[결과] COVID-19 이후 모든 종목에서 고강도 및 중간 강도의 활동이 감소했다. 그러나 저강도 활동은 거의 모든 종목에서 증가했다. 또한 모든 종목에서 앉아 있는 시간이 증가했으며, 식사 횟수는 종목마다 차이를 보였고, 모든 종목에서 경기 횟수는 감소한 것을 확인하였다.[결론] COVID-19는 끝난 듯 보이지만 아직 끝나지 않았다. 선수들은 원래 능력에 근접한 후 신체적, 생리학적 및 심리적 상태를 유지하는 최선의 방법을 찾는 것이 매우 중요하며. 이점은 COVID-19 이후 선수 복귀에 가장 큰 영향을 미칠 것으로 판단된다. PURPOSE This study aimed to investigate the effects of COVID-19 on elite youth athletes by investigating their activities and eating habits before and after the COVID-19 pandemic. METHODS This study included 917 elite adult athletes from 19 sports and were grouped into 6. The questionnaire included items regarding demographics, physical activity, sleep, and eating habits before and after COVID-19. A total of 44 questions requiring subjective short answers were included. Statistical significance was set at p< 0.05. RESULTS After COVID-19, vigorous and moderate activity decreased across all sports; however, light activity increased in almost sports. Time spent sitting increased across all sports. The difference in the number of meals consumed varied among sports, and the number of competitions decreased in all sports. CONCLUSIONS The COVID-19 pandemic appears to be finished but has not ended yet. Athletes must determine the best way to maintain their physical, physiological, and psychological states close to their original abilities. Determining this will provide the greatest impact on the return of athletes after COVID-19; this study will be helpful.

학동기 아토피피부염 환자의 삶의 질 및 정신과적 증상

성준영 ( Jun Young Seong ),이지호 ( Ji Ho Lee ),방수영 ( Soo Young Bhang ),최유성 ( Yu Sung Choi ),서호석 ( Ho Seok Suh ) 대한피부과학회 2015 대한피부과학회지 Vol.53 No.9

Background: Atopic dermatitis (AD) in school-aged children may affect their daily activities and psychological well-being. It can also have a negative impact on the child’s behavior. Little is known about the quality of life (QOL) and psychiatric symptoms in school-aged children and their relationship to disease severity. Objective: The purpose of this study was to document the impact of AD on QOL and psychiatric symptoms in school-aged children by disease severity. Methods: Seventy-eight AD patients aged 7∼19 years were included in this study. Participants completed the Children’s Dermatology Life Quality Index (CDLQI), Kovacs’ Children’s Depression Inventory (CDI), and the Korean Attention-Deficit Hyperactivity Disorder Rating Scale (K-ARS). Disease severity was evaluated using the SCORAD (SCORing Atopic Dermatitis) index. Results: The SCORAD was 28.95±17.92 (mean±SD), and the CDLQI was 8.04±6.29. The CDLQI was significantly correlated with the SCORAD. Psychiatric symptoms (CDI and K-ARS) did not show a correlation with the SCORAD, but they worsened with increasing CDLQI score. There was no statistically significant difference among the different age groups. Conclusion: We demonstrated that AD had an impact on school-aged children’s QOL and psychological well-being. Severity of AD correlated with QOL decrements, indicating greater QOL impact with greater disease severity. Psychiatric symptoms were more related to subjective impairment of QOL than objective disease severity. (Korean J Dermatol 2015;53(9):671∼676)

투기종목 선수들의 종목별 좌·우 불균형 및 기능적 동작 분석

성준영 ( Jun-young Sung ),김병주 ( Byoung-joo Kim ),이동률 ( Dong-ryul Lee ) 대한무도학회 2021 대한무도학회지 Vol.23 No.4

이 연구는 엘리트 투기종목(태권도, 유도, 검도, 복싱, 레슬링) 선수 203명을 대상으로 기능적 동작 검사(FMS)를 통해 투기종목 선수들의 기능적 동작 및 좌, 우 불균형을 분석하였으며, 연구결과는 다음과 같다. FMS측정결과 유도와 레슬링에서 기능적 동작점수가 가장 높게 나왔으며, 좌, 우 불균형은 모든종목에서 Hurdle Step과 Active Straight leg raise측정 시 좌우 불균형이 매우 심한 것으로 나타났다. 종목별 좌, 우 불균형은 선수들의 부상위험을 높이는 원인이기에 정확한 측정과 불균형을 회복할 수 있는 처방은 엘리트 투기종목 선수들의 경기력과 건강한 선수생활을 위해 필수적이라 할 수 있다. 이 연구의 결과는 스포츠 현장에서 FMS를 통한 투기종목선수들의 신체 불균형측정 및 부상예방을 위한 기초자료로 활용할 수 있다 판단된다. This study analyzed the functional movements and left and right imbalance of speculative athletes through functional motion tests (FMS) for 203 elite combat athletes (taekwondo, judo, kendo, boxing, and wrestling), and the results of the study are as follows. As a result of FMS measurement, the functional motion score was the highest in induction and wrestling, and the left and right imbalance was found to be very severe when Hurdle Step and Active Straight leg raise were specified in all sports. Since the left and right imbalances of each event increase the risk of injury to athletes, accurate measurement and prescription to restore the imbalance are essential for the performance of elite combet athletes and healthy. The results of this study can be used as basic data for measuring body imbalance and preventing injuries of speculative athletes through FMS in the sports field.

12주간의 고강도 인터벌 트레이닝이 대학 레슬링선수의 유산소운동능력 및 혈중젖산농도 변화에 미치는 영향

성준영(Sung, Jun-Young),오태웅(Oh, Tae-Woong) 한국체육과학회 2020 한국체육과학회지 Vol.29 No.6

The purpose of studying this was to investigate the effects of hight-intensity interval training during 12 weeks on VO₂max and changes in blood lactate levels after exercise and recovery in university wrestlers. The subjects of this study were 9 wrestlers was conducted HIIT three times a week. After 12week, VO₂max increased to be significant around 4.9% from 46.22±5.63 to 48.81±6.18(p<.049). Looking at the changes of blood lactic acid after HIIT, without immediately after exercise, differences of this result was not significant(Rasting: 0.93±0.71-1.14±0.81(.072), (Recovery 10min:6.52±2.06-5.89±2.3(.132). (Recovery 30min:2.46±.63-2.31±.65(.082). However, Immediately after exercise resulted significant from16.58±2.7 to 17.3±2.82(.024).

아프리카 말리 Barani 지역에 대한 광상 모델링 Ore deposit modelling of Barani district in Mali, Africa

성준영(Jun Young Sung),심권용(Gwon Yong Shim),허철호(Chul Ho Heo) 한국암석학회 2009 한국암석학회 학술발표회 논문집 Vol.2009 No.5

HIV 감염의 발현증상으로 나타난 난치성 소양증 1예

성준영 ( Jun Young Seong ),공숙현 ( Sook Hyun Kong ),서호석 ( Ho Seok Suh ),최유성 ( Yu Sung Choi ) 대한피부과학회 2017 대한피부과학회지 Vol.55 No.1

To achieve early detection of HIV infection, physicians must be aware of symptoms related to HIV infection. Dermatologists, in particular, can play an important role, because more than 90% of patients infected with HIV will develop at least one type of dermatologic disorder, which may be the first indicator of the existence of infection. A 26-year-old male presented with a one-year history of intractable pruritus associated with multiple excoriations and small ulcers. Initially, his condition clinically resembled adult atopic dermatitis. However, no improvement was observed despite treatment including narrowband ultraviolet B (UVB), antihistamine, and topical and systemic corticosteroid. After a week, the patient developed seizures and was diagnosed with diffuse large B-cell lymphoma of the brain. HIV testing was performed, and the patient was revealed to be HIV-positive. He began highly active antiretroviral therapy (HAART), and the pruritus and skin condition improved dramatically. Herein, we report a case of HIV infection for which the presenting sign was intractable pruritus. (Korean J Dermatol 2017;55(1):45∼48)

홍반성 판의 양상을 보인 소아기 육아종성 입주위 피부염 2예

성준영 ( Jun Young Seong ),채웅석 ( Woong Suk Chae ),정하나 ( Ha Na Jung ),공숙현 ( Sook Hyun Kong ),서호석 ( Ho Seok Suh ),최유성 ( Yu Sung Choi ) 대한피부과학회 2015 대한피부과학회지 Vol.53 No.4

Childhood granulomatous periorificial dermatitis (CGPD) is a distinctive granulomatous form of perioral dermatitis. It is characterized by papular eruptions located around the mouth, nose, and eyes, and rarely present eczematous patches or plaques. Histopathologic examination shows upper dermal and perifollicular granulomatous infiltrates. Herein, we report two cases of CGPD that were presented with erythematous plaques. One patient was treated with 0.03% topical tacrolimus and the other patient with oral metronidazole. The patients responded well to their respective therapies, showing resolution of the lesions. (Korean J Dermatol 2015;53(4):310∼314)

엘리트 여자선수의 FMS™ 측정을 통한 부상 위험도 예측

이동률(Lee, Dong-Ryul),성준영(Sung, Jun-Young),이형록(Lee, Hyoung-Rok),오태웅(Oh, Tae-Woong) 한국체육과학회 2021 한국체육과학회지 Vol.30 No.4

This study was conducted on 188 elite female athletes in 16 sports, comparing FMS™ results with other athletes, analyzing body imbalance and risk of injury. The results of the study were as follows. As a result of analyzing the difference in FMS score for each sport, the overall score was low in Hurdle Step and In-Line Lunge. ASLR recorded the highest score without distinction of sport, followed by Shoulder Mobility and Deep Squat. The overall score for each sport was the highest in athletics and the lowest in handball. In addition, the overall score was 14 points or less in all sports except athletics, curling, and wrestling and analyzed the difference in FMS scores for each sport, which showed that the ball sport recorded statistically lower score in Deep Squat compared to other sports. In the In-Line Lunge, individual sports recorded statistically higher scores than other sports and, shoulder Mobility scored statistically lower in combat sports than in other sports except for ball games. In the case of the overall score, winter sports scored the highest among the five sports, ball games recorded the statistically low score. This study result will provide more useful information for the prevention of sports injuries in elite athletes by presenting the relative results of dysfunction according to the asymmetry of athletes in each sport and event.