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몰입형 비디오 압축을 위한 스크린 콘텐츠 코딩 성능 분석
이순빈(Soonbin Lee),정종범(Jong-Beom Jeong),김인애(Inae Kim),이상순(Sangsoon Lee),류은석(Eun-Seok Ryu) 한국방송·미디어공학회 2020 방송공학회논문지 Vol.25 No.6
Recently, MPEG-I (Immersive) has been exploring compression performance through standardization projects for immersive video. The MPEG Immersion Video (MIV) standard technology is intended to provide limited 6DoF based on depth map-based image rendering (DIBR). MIV is a model that processes the Basic View and the residual information into an Additional View, which is a collection of patches. Atlases have the unique characteristics depending on the kind of the view they are included, requiring consideration of the compression efficiency. In this paper, the performance comparison analysis of screen content coding tools such as intra block copy (IBC) is conducted, based on the pattern of various views and patches repetition. It is demonstrated that the proposed method improves coding performance around -15.74% BD-rate reduction in the MIV.
수용성 아민화 올리브유 유도체의 트라이볼로지적 특성고찰
최웅수(Ungsu Choi),이상순(Sangsoon Lee) 한국트라이볼로지학회 2010 한국윤활학회지(윤활학회지) Vol.26 No.5
Aminated oilve oil derivative as the new organic disperse phases of the water soluble metal working fluid has been synthesized and tribological properties of the aqueous solutions composed of aminated olive oil derivative investigated using Four Ball Wear Tester and Falex EP Tester. The formulated aqueous solutions showed higher anti wear and extreme pressure properties and also lower friction coefficient. On the basis of the the results, water soluble aminated oilve oil derivative showed excellent tribologicaJ properties due to the polarizability of oleic acid derivative composed of majority part in oilve oil.