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상업영화 제작 사례를 통한 3D Digital actor활용에 관한 접근 : 영화 <과속 스캔들> 시각효과 제작 사례 중심으로
안재곤(Ahn jaekon),이재중(Lee jaejoong),박진완(Park jinwan) 한국디지털디자인학회 2010 디지털디자인학연구 Vol.10 No.1
3D 컴퓨터 그래픽의 발전은 현대의 상업 영화 제작에 큰 변화를 가져왔다. 가상의 물체와 환경을 디자인하고 입체적으로 형상화 시켜 영상에 삽입할 수 있게 됨에 따라 제작자들은 물리적 표현의 한계를 극복 할 수 있었다. 특히 3D 디지털 액터(Digital actor)기술의 발전은 실제 배우와 스턴트맨의 역할에만 의존했던 과거 제작방식에서 벗어나 좀 더 다양하고 복잡한 씬(Scene)의 제작을 가능하게 했다. 이에 본 논문은 3D 디지털 액터를 이용한 시각효과의 케이스 스터디(Case study)논문으로 디지털 액터의 등장 배경과 역할을 서술하고 3D적용 범위에 따라 디지털 액터의 종류를 분류했다. 또한 사실적인 디지털 액터 제작을 위해 3D 스캔(Scan) SSS 쉐이더(Shader) 멀티패스 렌더링(Multi pass rendering)등 중요한 제작 기술들을 연구하여 서술하였다. 제작 사례로 영화 <과속 스캔들>에서 제작 되었던 디지털 액터컷(cut)을 프리 프로덕션 프로덕션 포스트 프로덕션 3단계로 분리하여 각 과정에서 발생한 문제점과 해결 방법 작업 결과에 대해 서술했다. 제작 사례를 토대로 효과적인 디지털 액터 제작을 위해 개선되어야 할 문제점을 분석하고 우리나라 영화 제작 상황에 맞는 개선 방향을 제시한다. The development of 3D computer graphic brought great changes to the recent production of commercial movies. As it became possible to design imaginary objects and environment and form them into three-dimensional structure and insert them into pictures the producers could overcome the limits of physical expression. Particularly the development of technology for 3D digital actors freed us from the past method of production which relied only on the roles of real actors or actresses and stuntman and enabled us to produce more various and complicated scenes. Hereupon this treatise depicted necessary technology for the role and production of digital actors as it is the case study of visual effects which use 3D digital actors. And as an example of the production divided digital actor cut produced in the movie <Scandal Makers> into 3 stages as preproduction production and postproduction and depicted the problems formed out of each stage solutions and the results of the work and suggest the problems and solutions to be improved for the effective production of the digital actors.
X-Putt : 초음파 센서 기반의 골프 퍼팅 훈련 시스템 설계와 구현
안재곤(Jae-Gon Ahn),나대영(Dae-Young Na),임영태(Young-Tae Lim),전흥석(Heung-Seok Jeon) 한국컴퓨터정보학회 2011 韓國컴퓨터情報學會論文誌 Vol.16 No.7
본 논문에서는 골프 퍼팅 훈련 시스템인 X-Putt를 제안한다. X-Putt는 3차원 공간상의 퍼터의 위치와 각도를 실시간으로 추적함으로써 퍼팅 스트로크를 분석한다. 이를 위하여, X-Putt는 기존의 측위 시스템이 가지는 측정오차를 개선하여 보다 정밀한 초음파 기반의 실시간 위치 측정 시스템을 적용한다. 성능 평가 결과에 의하면,X-Putt는 3차원 공간상에서 퍼터의 위치를 ±0.9cm 측정 오차 범위 내에서 정밀하게 측정하였다. 또한 페이스 각도는 ±1.5?의 오차 범위를 보여준다. 추가적으로, 사용자가X-Putt를 이용하여 손쉽게 퍼팅훈련을 하고, 피드백결과를 확인할 수 있도록 직관적인 인터페이스의 사용자 응용 프로그램을 구현하였다. In this paper, we propose a new golf putting training system which we call "X-Putt". X-Putt analyzes putting strokes by measuring putter face angle and path. To do this, we improved the sonar-based localization scheme used by previous localization techniques. As a result, X-Putt can measure putter's location within the error range, ±0.9cm and putter face angle within ±1.5?. Additionally, we built an user application that has an easy-to-use interface for analyzing the strokes after training.
박석오,안재곤,문제웅,조병섭,이병철,천대철,최대섭,장석일,민경업 대한천식알레르기학회 1996 천식 및 알레르기 Vol.16 No.1
Systemic allergic reaction by ant sting is relatively rare but is potentially lethal. We experienced two cases with systemic allergic reaction by ant(Brachyponera chinensis, Emery) sting in mother and daughter. Mother had a previous history of food allergy, and daughter had a history of at,opy and allergic rhinitis. They had generalized allergic reactions in skin and respiratory system after ant sting at home. They showed strong positive skin reactions to whole body extract of causative ant. We determined that their reactions were caused by ant venom in mother and daughter. The causative ant was confirmed by skin test.
김호정,이향주,신경철,김규태,이병철,조병섭,전하영,이인환,최대섭,장석일,문제웅,안재곤,권학중 대한소화기내시경학회 1996 Clinical Endoscopy Vol.16 No.2
The anisakiasis disease that is infected through various kinds of larvae of the anisakis family when sea fish ia eaten uncooked or half-cooked. Sinee Van Thiel, a Netherlander, found in 1960 that anisakis larvae parasitize upon the human intestinal tract of the patients who suffer from ahdomieal pain after eating herrings, there have been a number of similar reports in North America and Japan, and the clinical importance of anisakis larvae for the acute gastrontestinal infection is rising. In general, as raw sea fish is not regarded as a source of parasite infestation, the patients who had eaten it and suffered from acute abdominal pain and vomiting are considered as and to be treated of food poisoning. But it is highly possible that some of them suffer from the acute gastrointestinal symptom caused by anisakis larvae. Thereby we report on 7 examples of anisakiasis taken through endoscopic diagnosis of the patients who have the acute upper abdominal pain after eating raw sea fish.
십이지장을 침범한 Henoch-Shoenlein Purpura 1예
김호정,신경철,김규태,김종숙,조병섭,이향주,최대섭,문제웅,안재곤,이병철,전하영,이인환,권학중,장석일 대한소화기내시경학회 1996 Clinical Endoscopy Vol.16 No.4
Henoch-Shonlein(H-S) purpura, or anaphylactoid purpura is a hypersensitivity vasculitis characterized by palpable purpura usually on buttock and low extremities; arthralgia mostly polyarhtralgia in the absence of frank arthritis; gastraintestinal involvement with colicky abdominal pain, nausea, vomiting, diarrhea, constipation and bleeding and renal involvement, manifested chiefly by hematuria and proteinuria. Gastrointestinal involvement is seen in 70 percent of pediatric patients and one third of adult patients. Any portion of the gastrointestinal tract distal to the esophagus maybe involved, but most frequently affected sites are jejunum and ileum. We report one case of H-S purpura with duodenal involvement observed in 16, male patient.
김종숙(Jong Suk Kim),김호정(Ho Jung Kim),김택수(Taeg Sue Kim),박석오(Suk Oh Park),안재곤(Jae Kon Ahn),조병섭(Byung Sub Cho),어중건(Jung Gun Uh),장석일(Suk Il Chang),최대섭(Dae Sub Choi),이병철(Byung Chul Lee),강유미(Yu Mi Kang) 대한소화기학회 1997 대한소화기학회지 Vol.30 No.1
Squamous cell carcinoma of colorectum is rare disease, and squarnous cell carcinoma in situ of colorectum is very rare disease. But, squamous carcinomas of the colorectum have clinico- pathological features in common with adenocarcinomas. Treatment is the same but the prognosis of squamous cell carcinoma appears to be worse than that of adenocarcinoma. A 66-year old man has suffered chronic constipation and acute diarrhea. Barium enema and colonoscopy revealed about lobular 3cm sized mass with multiple tiny ulcerations on the surface in distal rectum. Colonoscopic biopsy and excisional biopsy showed tumor cells which are well circumscribed within columnar epithelium and basement membrane. Here, we presented a case of squamous cell carcinoma in situ of rectum. (Korean J Gastroenterol 1997; 30:114-118)
위선암과 우측 쇄골상 림프절의 호지킨씨 림프종이 병발한 이중 원발성 암 1 예
천대철(Dae Chul Chun),박석오(Suk O Park),김택수(Taek Soo Kim),문제웅(Je Woong Moon),이병철(Byounng Chul Lee),조병섭(Byoung Sub Cho),안재곤(Jae Gon Ahn),변정원(Jung Won Byun),김규태(Kyu Tae Kim),김호정(Ho Jung Kim),최대섭(Dae Sub Choi 대한내과학회 1996 대한내과학회지 Vol.50 No.6
Double primary cancer is defined as the case of primary malignant tumors, which must be arise in different sites and have a different histologic appearances. This article is a case report of synchronous double primary cancers. We have experienced with double primary malignant tumors of different site of origin such as stomach adenocarcinoma and Hodgkin's lymphoma of right supraclavicular lymph node, which were diagnosed by biopsies with gastrofibroscopy and fine needle aspiration of right supraclavicular lymph node. For its great rarity, we report this case with review of literatures.