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360 VR에서 GUI 종류에 따른 시선 이동 경향성에 대한 연구
최하람,남상훈 차세대컨버전스정보서비스학회 2022 차세대컨버전스정보서비스기술논문지 Vol.11 No.4
The 360 VR video has no frame boundaries and the user’s eye movement is characterized by increased freedom. Due to these characteristics, users may miss an essential part of the 360 VR video narrative, and their gaze may not move according to the direction of the narrative intended by the director. Therefore, a directing technique that considers the movement of the user’s gaze in the 360 VR video is required. In order to analyze the directing technique considering the movement of the user’s gaze in the 360 VR video, it is necessary to analyze the user’s visual information, and in this case, eye-tracking technology is used. In this paper, the user’s gaze movement tendency according to the type of GUI in the 360 VR video was analyzed using the 360 VR eye tracking system. Based on the gaze tracking system, an experiment was conducted to analyze the user’s gaze movement tendency according to the size, frequency, time, and number of GUI. The results were derived that the larger the GUI size, frequency, time, and number values, the more active gaze movements were induced, and the longer the GUI exposure time, the more subjects’ gaze movements were induced. 360 VR 영상은 프레임의 경계가 없으며 사용자 시선 이동의 자유가 높아졌다는 특징이 있다. 이러한 특징 때문에 사용자는 360 VR 영상 내러티브의 필수적인 부분을 놓칠 수도 있으며 연출자가 의도한 서사의 흐름대로 시선이 이동하지 않을 수도 있다. 따라서 360 VR 영상에서 사용자의 시선 이동을 고려한 연출 기법이 필요하다. 360 VR 영상에서 사용자의 시선 이동을 고려한 연출 기법을 분석하기 위해서는 사용자의 시각 정보를 분석하는 과정이 필요하며 이때 시선 추적 기술이 활용된다. 본 논문에서는 360 VR 시선 추적 시스템을 활용하여 360 VR 영상에서 GUI의 종류에 따른 사용자 시선 이동 경향성을 분석하였다. 시선 추적 시스템을 기반으로 GUI의 크기, 빈도 시간, 개수에 따른 사용자 시선 이동 경향을 분석한 실험을 진행하였다. GUI의 크기, 빈도, 시간, 개수의 값이 클수록 시선 이동이 활발하게 유도되며 GUI의 노출 시간이 길수록 가장 많은 피실험자의 시선 이동을 유도하였다는 결과가 도출되었다.
최하람,김형래,유시연,손제영,김재송,손은선,금민정,유윤미 한국병원약사회 2022 병원약사회지 Vol.39 No.3
Background : Pneumonia is one of the acute respiratory diseases leading to death in the elderly population, and the death rate from pneumonia is gradually increasing. However, there are not enough studies analyzing the impact of antidepressant use on the occurrence of pneumonia so far. Thus, the purpose of this study was to analyze if the use of antidepressants impacts hospitalization from pneumonia in patients older than 50. Methods : This is a retrospective, case-control study of patients older than 50 admitted to Severance Hospital January 2018-December 2019. Afterwards, patients diagnosed with pneumonia were used as a case group and patients who were not diagnosed with pneumonia were used as a control group. The final target patient was selected by propensity score matching. Based on the index date of each patient, the recency, components, dose, and duration of antidepressant prescription for the previous a year were investigated. Results : The use of antidepressants significantly increased the risk of hospitalization for pneumonia (model 3: adjusted OR [aOR] 1.69, 95% CI 1.31-2.17). As a result of analysis by class of antidepressants, except for model 1, taking atypical antidepressant significantly increased the risk of hospitalization from pneumonia (model 2: aOR 1.55, 95% CI 1.01-2.39; model 3: aOR 1.56, 95% CI 1.31-2.17). Also, in all models, the group taking TCA significantly increased the risk of hospitalization for pneumonia (model 3: aOR 1.68, 95% CI 1.02-2.79). Conclusion : The use of antidepressants significantly increased the risk of hospitalization for pneumonia. The longer and more recent antidepressant use, the higher the risk of hospitalization for pneumonia. However, considering the limitations of this study, a long-term and prospective study is needed.
360 VR 영상에서 사용자 시선 유도 요소에 대한 연구
최하람,강동현,남상훈 차세대컨버전스정보서비스학회 2020 디지털예술공학멀티미디어논문지 Vol.7 No.4
In the 360 VR video, the size of the screen has been expanded and the degree of freedom for the user's gaze within the video has increased, so the user's gaze may not move as intended by the director in the 360 VR video. Therefore, from the stage of directing, a directing technique considering 360 VR video is required. In this paper, Thirty cases were analysed 360 VR music video uploaded on Youtube from 2015 to 2020. The factors that can cause the user's attention are classified into ‘object movement’,‘CG insertion’, and ‘camera movement’. "Object movement" refers to inducing a user's gaze movement by moving an object(musician) appearing in a video. 'Insert CG' is used when it is necessary to induce the user to move their gaze to a place not watching. 'Camera movement' is used when it is necessary to induce gaze movement in the direction intended by the director by inducing gaze movement in the direction of camera movement. If such a gaze-inducing element is appropriately used in a 360 VR video where the user's field of view is extended, the user’s gaze can be induced as the director intended. 360 VR 영상은 스크린의 크기가 확장 되었고 영상 내에서 사용자 시선의 자유도가 높아졌기 때문에 사용자의 시선이 연출자가 의도한 대로 이동하지 않을 수도 있다. 따라서 연출 단계에서부터 360 VR 영상을 고려한 연출 기법이 필요하며 본 논문에서는 유튜브에 업로드 된 20편의 360 VR 뮤직비디오를 분석하고 사용자의 시선 이동을 유발할 수 있는 요소를 ‘오브젝트의 움직임’, ‘CG 삽입’, ‘카메라의 이동’으로 정리 및 연구하였다. ‘오브젝트의 움직임’은 오브젝트가 이동하면서 사용자의 시선 이동을 유도하는 것이고 ‘CG 삽입’은 사용자가 시청하고 있지 않은 곳으로 시선 이동을 유도해야 할 때 사용되며 ‘카메라의 이동’은 카메라의 이동 방향으로 시선 이동을 유도하여 연출자가 의도한 방향으로 시선 이동을 유도해야할 때 사용된다. 사용자의 시야가 확장된 360 VR 영상에서 이러한 시선 유도 요소를 적절히 사용하면 연출자의 의도대로 사용자의 시선을 유도할 수 있다.
사용자 참여를 위한 어포던스 요소를 기반으로 혼합현실 지역 문화 실감형 콘텐츠 개발
최하람,남상훈 한국멀티미디어학회 2023 멀티미디어학회논문지 Vol.26 No.7
Realistic content based on immersive technology stimulates the human senses and enables a realistic experience like reality. Realistic content can increase immersion and presence, which can induce users to participate in the content. Accordingly, cultural institutions and museums are developing realistic content to enable users' sensory experience and provide immersion. Using Mixed Reality in art galleries and museums can provide users with additional information about the content. In addition, users can virtually experience artifacts and historical people that cannot be experienced at present. Affordance, which is important in user experience, can provide a high sense of immersion and interaction to users in realistic content. Therefore, it is necessary to consider affordance in developing realistic content. In this paper, regional-culture realistic content using mixed reality was developed. Sculptor Moonshin, who cannot be seen currently, was developed as virtual content. To participate user in the content, the content was developed based on Hartson's affordance, and the developed content was demonstrated and experienced in cooperation with Changwon City Moonshin Art Museum.
최하진 ( Choi Hajin ),이현호 ( Lee Hyunho ),홍성욱 ( Hong Seonguk ),김상우 ( Kim Sangwoo ),김성범 ( Kim Seongbeom ),노승준 ( Roh Seungjun ) 한국구조물진단유지관리공학회 2021 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.25 No.2
시설물의 안전 및 유지관리에 관한 특별법에서 구분하는 제1종, 제2종 제3종 시설물의 경우 시설물 소유자에게 주기적인 안전점검에 대한 의무가 있지만, 소규모 취약시설의 경우 요청에 의한 안전점검을 실시하고 있다. 그 대상으로는 사회복지시설, 전통시장, 소규모 토목시설 등으로 시설물의 주관부처 또한 보건복지부, 중소벤처기업부, 국토교통부 등으로 다양하다. 본 연구에서는 소규모 취약시설 관련 제도의 고찰 및 정비를 통하여 시설물 노후화 시대에 국민이 체감하는 실효성 있는 안전관리 방안을 도출하고자 하였다. 구체적으로 1) 소규모 취약시설 제도 개선방안, 2) 제도 및 시스템 연계방안 마련, 3) 정보시스템 데이터 활용방안 등을 연구하였다. 소규모 취약시설 안전관리시스템을 통한 데이터 분석을 실시하였으며 안전점검에 따른 편익분석, 대상 선정을 통한 제도 개선에 대하여 고찰하였다.
인천 근대 건축물의 적극적 활용을 위한 리노베이션에 관한 연구 -등록문화재를 중심으로-
최하나,김정기 한국문화공간건축학회 2009 한국문화공간건축학회논문집 Vol.- No.27
An architecture is a vessel containing a people's life. A life's paradigm could be made by values of the times and when the technical expertises are added to such a paradigm, thereby the architecture is finally made. Therefore an architecture is a favorite of the time's cultural arts. Such an architecture can not maintain the vital power as a real architecture if the architecture does not continue a people's life. Furthermore, while the time goes by and the building's functions change, the space no longer can perform the functions and happens to be abandoned and alienated. The architecture which is not well defined and misused needs to be renovated in the sense of recycling the city. Even more in case the architecture has a historical and cultural preservation value, the renovation for a proper use of the architecture is much more important. The modern time's street in Incheon is a historical spot which shows Korean modern architecture style. Nevertheless, the people's understanding for a preservation and proper use is quite low, because of a lack of historical definition about the modern times. Hence, in the case of building which is owned by private, sometimes it is heartbreakingly removed and demolished because of some monetary reasons. According as the industry prospered in this area declined and the center of city is moving, development for an actual use of this area's buildings are desperately needed. This study has focused that the modern buildings having value of the preservation in Incheon should be used more actively through a renovation. An architecture is a vessel containing a people's life. A life's paradigm could be made by values of the times and when the technical expertises are added to such a paradigm, thereby the architecture is finally made. Therefore an architecture is a favorite of the time's cultural arts. Such an architecture can not maintain the vital power as a real architecture if the architecture does not continue a people's life. Furthermore, while the time goes by and the building's functions change, the space no longer can perform the functions and happens to be abandoned and alienated. The architecture which is not well defined and misused needs to be renovated in the sense of recycling the city. Even more in case the architecture has a historical and cultural preservation value, the renovation for a proper use of the architecture is much more important. The modern time's street in Incheon is a historical spot which shows Korean modern architecture style. Nevertheless, the people's understanding for a preservation and proper use is quite low, because of a lack of historical definition about the modern times. Hence, in the case of building which is owned by private, sometimes it is heartbreakingly removed and demolished because of some monetary reasons. According as the industry prospered in this area declined and the center of city is moving, development for an actual use of this area's buildings are desperately needed. This study has focused that the modern buildings having value of the preservation in Incheon should be used more actively through a renovation.