매치무빙 기법을 활용한 모션그래픽 영상제작에 관한 연구

이준상,박준홍,이임건,Lee, Junsang,Park, Junhong,Lee, Imgeun 한국정보통신학회 2016 한국정보통신학회논문지 Vol.20 No.4

Motion graphic is the recently emerged technique which extends the ways of expression in video industry. Currently, it is worldwide trends that the image design gets more attention in the field of movie, advertisement, exhibition, web, mobile, games and new media, etc. With the development of computer's new technologies, VFX methods for the visual content is dynamically changed. Such production methods combine the real scenary and CG(Computer Graphic) to compose realistic scenes, which cannot be pictured in the ways of ordinary filming. This methods overcome the difference between the real and virtual world, maximize the expressive ways in graphics and real space. Match moving is technique of accurate matching between real and virtual camera to provide realistic scene. In this paper we propose the novel technique for motion graphic image production. In this framework we utilize the match moving methods to get the movements of the real camera into 3D layer data.

드론 촬영 기반 사진 스캐닝 기술을 활용한 3D 모델링데이터 생성방법에 관한 연구

이준상,이임건,Lee, Junsang,Lee, Imgeun 한국정보통신학회 2018 한국정보통신학회논문지 Vol.22 No.6

3D 모델링은 건축, 기계, 제품 및 영화영상의 다양한 콘텐츠 제작 등에 폭넓게 활용되고 있으며 첨단 제작기술들이 적용되고 있다. 모델링은 시간이 많이 소요되는 작업으로 이러한 단점을 보완하기 위해서 최근 3D스캐닝 기술을 적용하여 제작기간을 단축시키려는 시도가 활발하다. 소형 오브젝트에 대한 3D스캐닝은 레이저나 광학을 이용하여 직접 데이터를 얻지만 대형의 건물이나 조형물은 고가의 장비가 필요하므로 직접적이 데이터 취득이 힘들다. 본 연구에서는 포토메트리를 이용하여 대형 오브젝트에 대한 3차원 모델링 데이터를 획득한다. 영상 데이터를 획득하기위해 드론을 이용하였으며 조형물과 드론의 일정한 간격유지와 비행 동선에 대한 측정방법을 제시하였다. 또한 획득된 3차원 점군 데이터를 애니메이션에 활용할 수 있는 제작환경과 렌더링 된 애니메이션 결과물을 제시하여 다양한 환경에서 제작할 수 있는 방안을 모색하였다.

3D 카메라 기반 스테디캠 효과를 적용한 영상제작에 관한연구

이준상,박성대,이임건,Lee, Junsang,Park, Sungdae,Lee, Imgeun 한국정보통신학회 2014 한국정보통신학회논문지 Vol.18 No.12

The steadicam effects is widely used in production of the 3D animation for natural camera movement. Conventional method for steadicam effects is using keyframe animation technique, which is annoying and time consuming process. Furthermore it is difficult and unnatural to simulate camera movement in real world. In this paper we propose a novel method for representing steadicam effects on virtual camera of 3D animation. We modeled a camera of real world into Maya production tools, considering gravity, mass and elasticity. The model is implemented with Python language, which is directly applied to Maya platform as a filter module. The proposed method reduces production time and improves production environment. It also makes more natural and realistic footage to maximize visual effects.

플로우(flow)의 요인이 VR 영상콘텐츠와 HMD의 지속이용에 미치는 영향 연구

이준상,박준홍,Lee, Junsang,Park, Jun-Hong 한국정보통신학회 2019 한국정보통신학회논문지 Vol.23 No.7

Recently, VR technology has been able to enjoy VR content using HMD due to changes in hardware and displays. VR video contents and HMD are becoming interactive through human senses and computer interfaces. Based on flow based on VR user's perspective, VR video contents and HMD were approached as subjects for continuous use. The components of the independent variable Flow were set up in real life, immersion, and interaction. Data from 400 male and female users of 450 users commissioned by the survey agency were used in the study. Research shows that first flow influences VR video contents and continuous use. Second, flow has been shown to affect HMD and its continued use. Among the flow factors that enhance the persistence of VR video content and HMD, which act as the greatest influence was studied. Through this research, the company aims to help establish direction of the next-generation VR industry

음원 데이터를 활용한 3D 애니메이션 카메라 아웃포커싱 표현 연구

이준상(Junsang Lee),이임건(Imgeun Lee) 한국컴퓨터정보학회 2014 한국컴퓨터정보학회논문지 Vol.19 No.2

The role of sound in producing 3D animation clip is one of the important factor to maximize the immersive effects of the scene. Especially interaction between video and sound makes the scene expressions more apparent, which is diversely applied in video production. One of these interaction techniques, the out-focussing technique is frequently used in both real video and 3D animation field. But in 3D animation, out-focussing is not easily implemented as in music videos or explosion scenes in real video shots. This paper analyzes the sound data to synchronize the depth of field with it. The novel out-focussing technique is proposed, where the object's field of depth is controlled by beat rhythm in the sound data.

낙동강 합천보 유역 내 귀이빨대칭이 (Cristaria plicata) 서식 실태 연구

이준상(Junsang Lee),박정호(Jungho Park),변진수(Jinsoo Byun),이연호(Yeonho Lee) 강원대학교 환경연구소 2011 Journal of the Environment Vol.8 No.1

Members of the family Unionidae are found throughout the northern hemisphere, but Cristaria plicata (Leach, 1815) was endemic freshwater mussels in Northeast Asia. C. plicata was designated endangered wild animal/plant species by the Ministry of Environment. We investigated ecological habitat of C. plicata in the Hapcheon weir watershed from April to May, 2011. The vertical range of C. plicata was below 3.5 m (EL: sea depth), and with together species was Anodonta arcaeformis (44.4%, 32 individuals), followed by Unio douglasiae (22.2%, 16 individuals), Limnoperna fortunei (13.9%, 10 individuals), Corbicula fluminea (11.1%, 8 individuals), and Anodonta woodiana (8.3%, 6 individuals). The bottom conditions of study area was divided into four types (Rock Layer, Crushed Stone Layer, Crushed Stone Layer with some Sand Layer, Mud Layer). Among these bottom conditions, in the Crushed Stone Layer 81 individuals (68.1%), Rock Layer collected 27 individuals (22.7%), Crushed Stone Layer with some Sand Layer collected 7 individuals (5.9%), and Mud Layer 4 individuals (3.4%), respectively. Most Unionidae species were generally found where there are fine substrates like sand or mud however; C. plicata was found crack in a rock. This study is first investigation of the ecological habitat for Cristaria plicata in Korea.

디지털영상 합성을 위한 가상카메라의 트래킹 데이터 보정에 관한 연구

이준상(Junsang Lee),이임건(Imgeun Lee) 한국컴퓨터정보학회 2012 한국컴퓨터정보학회논문지 Vol.17 No.11

The development of the computer widens the expressive ways for the nature objects and the scenes. The cutting edge computer graphics technologies effectively create any images we can imagine. Although the computer graphics plays an important role in filming and video production, the status of the domestic contents production industry is not favorable for producing and research all at the same time. In digital composition, the match moving stage, which composites the captured real sequence with computer graphics image, goes through many complicating processes. The camera tracking process is the most important issue in this stage. This comprises the estimation of the 3D trajectory and the optical parameter of the real camera. Because the estimating process is based only on the captured sequence, there are many errors which make the process more difficult. In this paper we propose the method for correcting the tracking data. The proposed method can alleviate the unwanted camera shaking and object bouncing effect in the composited scene.

일반균형모형을 이용한 한국경제의 성장분석

이준상(Junsang Lee) 한국경제연구학회 2013 한국경제연구 Vol.31 No.3

성장회계(growth accounting)는 1957년 Robert Solow 이후 경제성장의 각기 다른 요인들의 기여도를 측정하는 방법으로 널리 이용되어 왔다. 그러나 각 기여도에 대한 해석과 함의를 도출하는 부분에서는 거시경제를 일반균형상에서 논하는 부분에서는 거시경제를 일반균형상에서 논하는 부분에서 부족한 점이 있어, 경제주체들의 최적화 행위 등 미시적 기초(micro-foundation)를 기본적으로 지니고 있어서 분석에서 각 경제주체들의 최적화에 미치는 경로를 연구할 수 있다는 장점이 있다. 주요 연구결과를 보면, 첫째 지난 20년간 한국의 1인당 GDP 성장률은 대체적으로 총요소생산성의 성장과 같이 하는 것으로 나타났다. 둘째, 투입요소별로 근로시간의 하락은 일부 근로소득세의 상승에서 기인한 것으로 보이며, 또한 노동시장 내에서의 효율성은 합리적 가계의 균형조건에서의 이탈(wedge)을 보았을 때 개선되어 지고 있는 것을 발견하였다. 정책당국에서는 생산요소의 성장에 대한 조세의 영향을 인식하고 경제정책의 의사결정에 판단자료로서 함의가 있다고 볼 것이다. 셋째, 자본-노동 비율이 상승하고 있는 것으로 자본 심화가 진행 중인 것으로 보이며, 이는 한국경제가 균형성장 경로로의 이행 과정에 있으며, 경제구조가 자본집약적인 산업구조로서 이행을 의미하는 것으로 기존의 연구와 일관된 결론을 갖는다. Growth accounting has been widely used to measure the contributions of various factors to economic growth since Robert Solow in 1957. However, growth accounting fails to explain and implicate each contribution when viewing macroeconomy under general equilibrium. This study utilizes general equilibrium theory to analyze the growth of the Korean economy. The general equilibrium model holds micro-foundation such as optimizing behavior of economic agents; hence it allows studying of channels in which economic agents optimize in the economy. The outcomes of the study include: First, in general, Korea’s per capital GDP growth rate and the growth rate of total factor productivity for the past two decades showed similar trends; Second, the fall in hours worked appears to be partly attributable to the increase in the wage (income) tax, and in addition, labor market efficiency is found to be improving, since the labor market wedge, which is derived from the equilibrium labor condition, has become smaller. The policy authority should realize the impacts of taxation on the growth of production factor and its implication when making decisions on economic policies; and third, the capital-labor ratio is on the rise, which is a sign of capital deepening, and further it indicates that the economic structure of Korea is now in transition to the capital-intensive industry.

도시철도 조명제어시스템 국산화 개발연구

이준상(Junsang Lee),김진영(Jinyoung Kim),김산홍(Sanhong Kim),유근규(Guenkyu Yu) 한국철도학회 2013 한국철도학회 학술발표대회논문집 Vol.2013 No.11

서울도시철도 조명제어시스템의 특성은 건설 시 GE, TOSHIBA, NATIONAL 등 외산제품으로 설치되었으며, 시설물의 노후화 진행과 더불어 외산 장비의 유지보수에는 많은 비용과 시간이 소비되고 있다. 서울도시철도공사에는 도시철도 특성에 부합하고 신기술이 접목된 조명제어시스템 국산화 개발을 추진하였다. 개발 시 주요사항으로는 사용자 중심의 PC 기반시스템, 2 중 안정화 시스템, 변화되는 조명시스템에 대응 시스템, 에너지 절감형 시스템으로의 국산화 개발 등이 주요 개발전략으로 추진되었다. Seoul Metropolitan Rapid Transit station light control system during the construction of the characteristic GE, TOSHIBA, NATIONAL, such as the foreign product has been installed, proceed with the aging of the foreign facility maintenance of equipment and a lot of money and time is spent. Seoul Metropolitan Rapid Transit Corporation in accordance with the characteristics of the city railway and lighting control systems with a combination of new technologies to promote localization was Key points in the development of a user-oriented PC-based systems, dual stabilization system, a lighting system in response to changes in the system, energy-saving systems, such as the localization of two major development was promoted as a strategy.

비 실사 렌더링 기법을 이용한 3차원 지도 표현 기법

이준상(JunSang Lee),김현민(HyeonMin Kim),김민주(MinJu Kim),김형석(HyungSeok Kim) 한국정보과학회 2014 한국정보과학회 학술발표논문집 Vol.2014 No.12