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실감방송을 위한 3차원 영상 촬영 및 3차원 콘텐츠 제작 기술
강윤석,호요성,Kang, Y.S.,Ho, Y.S. 한국스마트미디어학회 2012 스마트미디어저널 Vol.1 No.1
3차원 영상은 기본적으로 양안식 혹은 다시점 카메라를 이용해 촬영되며, 3차원 공간의 정보를 실시간적으로 얻기 위해 깊이 센서도 함께 사용된다. 이렇게 얻어진 영상은 잡음과 왜곡 제거, 깊이 생성, 중간 시점 합성 등의 3차원 영상처리 기술을 이용하여 3차원 입체영상 콘텐츠로 제작된다. 실감방송은 다양한 실감 콘텐츠를 이용하여 시청자가 마치 현장에 있는 것과 같은 생생함을 느끼게 해주는 차세대 방송이며, 3차원 입체영상 콘텐츠는 실감방송을 위한 가장 기본적인 미디어로 사용된다. 본 논문에서는 다양한 카메라 시스템을 이용하여 3차원 영상을 촬영하고 편집하여 실감방송을 위한 3차원 콘텐츠를 제작하는 연구의 국내외 기술동향을 살펴보고 주요 기술을 소개, 비교 및 분석한다. Stereo and multi-view cameras have been used to capture the three-dimensional (3D) scene for 3D contents generation. Besides, depth sensors are frequently used to obtain 3D information of the captured scene in real time. In order to generate 3D contents from captured images, we need several preprocessing operations to reduce noises and distortions in the images. 3D contents are considered as the basic media for realistic broadcasting that provides photo-realistic and immersive feeling to users. In this paper, we show technical trends of 3D image capturing and contents generation, and explain some core techniques for 3D image processing for realistic 3DTV broadcasting.
양신추(S. C. Yang),강윤석(Y. S. Kang),김은(E. Kim) 한국철도학회 2002 한국철도학회 학술발표대회논문집 Vol.- No.-
This paper deal with optimal design of reinforced track as a track reinforcing method for transition area of track support stiffness in transition area between bridge and earthwork. When vehicle passes through transition area, dynamic properties between vehicle and track are studied by the analysis of vehicle-train interaction for the each case when reinforced tracks are used or not. Furthermore, optimum decision of type and length of track are made based on the performance adapting variable parameters : support stiffness of track for bridge and earthwork, heading direction of vehicle and type and length of track.
양쪽성계면활성제의 유도체합성 및 계면성에 관한 연구(제4보)
노윤찬(Y C Ro),강윤석(Y S Kang),남기대(K D Nam) 한국유화학회 1994 한국응용과학기술학회지 Vol.11 No.2
1-(2-hydroxyethyl)-2-undecyl-2-imidazoline[Ⅰ] was converted into various types of sulfonated or sulfated amphoteric surfactants as following. ㆍ1-(2-hydroxyethyl)-1-(3-sulfonatedpropyl)-2-undecyl-2-imidazolium[Ⅲ] ㆍ1-(2-sulfatedethyl)-1-methyl-2-undecyl-2-imidazolium[Ⅳ] ㆍ1-dioxylethylene methyl sulfonated-l-methyl-2-undecyl-2-imidazolium[Ⅴ] ㆍN-[N -(2-hydroxyethyl-N -(3-sulfonatedpropylammonio]ethyl dodecanoylamide[Ⅵ] ㆍMono sodium N-[N -(2-hydroxyethyl)-N -disulfonatedpropylammonio]ethyl dodecanoyl amide [Ⅶ] ㆍN-[N -(2-hydroxyethyl-N -(2-hydroxypropl-N (3-sulfonatedpropyl)ammonio] ethyl dodecanoyl amide[Ⅷ] The alkylimidazolines could be readily hydrolyzed to give amidoamines, but by quaternerization, hydrolysis stability of imidazoline and amide type amphoteric surfactantes were increased in the alkali and acid conditions. Also, at least three carbon chains introduce to the main group, water solubility was sparingly increased.