• 제목/요약/키워드: Y-View

검색결과 18,433건 처리시간 0.036초

Fast Encoder Design for Multi-view Video

  • Zhao, Fan;Liao, Kaiyang;Zhang, Erhu;Qu, Fangying
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • 제8권7호
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    • pp.2464-2479
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    • 2014
  • Multi-view video coding is an international encoding standard that attains good performance by fully utilizing temporal and inter-view correlations. However, it suffers from high computational complexity. This paper presents a fast encoder design to reduce the level of complexity. First, when the temporal correlation of a group of pictures is sufficiently strong, macroblock-based inter-view prediction is not employed for the non-anchor pictures of B-views. Second, when the disparity between two adjacent views is above some threshold, frame-based inter-view prediction is disabled. Third, inter-view prediction is not performed on boundary macroblocks in the auxiliary views, because the references for these blocks may not exist in neighboring views. Fourth, finer partitions of inter-view prediction are cancelled for macroblocks in static image areas. Finally, when estimating the disparity of a macroblock, the search range is adjusted according to the mode size distribution of the neighboring view. Compared with reference software, these techniques produce an average time reduction of 83.65%, while the bit-rate increase and peak signal-to-noise ratio loss are less than 0.54% and 0.05dB, respectively.

FEMWASP 모형 및 ArcView를 결합한 통합적 환경영향평가 모형의 개발 및 적용 (An Integrated Environmental Impact Assessment Model using FEMWASP and ArcView)

  • 김준현;한영한;최윤정
    • 환경영향평가
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    • 제7권2호
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    • pp.65-70
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    • 1998
  • ArcView와 FEMWASP 모형을 이용하여 영월유역의 현재 및 장래의 환경질을 해석하기 위한 통합적인 환경영향평가 도구를 개발하였다. 모든 입력자료와 계산 결과는 ArcView상에서 준비되어 도시되었다. ArcView내의 Avenue의 "system.execute" 명령어를 사용하여 FEMWASP과 ArcView를 통합하였다. 모델링 결과에 의하면 장래 영월호의 수질은 부영양화 상태에 이를 것으로 판단되었다. 개발된 시스템은 상수원수의 수질관리 분야의 정책의 계획이나 규제 방안을 결정하는 데 적용될 수 있을 것이다.

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교육관에 기초한 학교 환경교육의 목적 고찰(공학적, 성년식, 사회화 교육관을 중심으로) (The Establishment of the Purpose of School Environmental Education Based by the Educational Views(1))

  • 조성화;최돈형
    • 한국환경교육학회지:환경교육
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    • 제21권1호
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    • pp.57-69
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    • 2008
  • The purpose of Environmental subject in the Korean school is pretty much similar to that of international organization. Because it doesn't apply the characteristics of School Education to environmental education, this school environmental education purpose needs to be discussed. The purpose of this study is to establish the reasonable purpose of school environmental education by analyzing the educational views. This study have been done through review of research literature, which usually includes references and papers on environmental education, school environmental education, educational point of view, educational purpose. It analyzed three kinds of views on education: technological view on education, initiation view on education, socialization view on education. The results are as follows: The purpose of school environmental education from technological view on education is environmental education activity itself that educates students to put the environmental preservation value into action. Initiation view on education aims at school environmental education as activities that instruct students on intellectual ability in order to develop a comprehensive view of intelligence. The purpose of environmental education in school on the basis of socialization view on education focuses on activities that authoritative teachers transmit the social value of environmental preservation to students in school.

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What Should Using a Software Product and Usability of the Software Product Be?

  • Koh, Seokha;Jiang, Jialei
    • Journal of Information Technology Applications and Management
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    • 제24권3호
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    • pp.73-92
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    • 2017
  • Usability is one of the most important concepts regarding software quality. It can be interpreted as the goodness associated with using the software product. This paper distinguishes the goodness of an individual using experience and the goodness of a product for using. This paper proposes a software quality view model which classifies software quality views into two broad categories of end view and means view. End view includes long-term view and short-term view which is classified further into performer's view on software activity and third party's view on software activity. Means view includes intrinsic view and contingency view. The analysis of ISO 25000 Series SQuaRE demonstrates the necessity to decompose product quality model and quality in use model into five models corresponding to the software quality views respectively. The analysis on playability shows that the universal definition of usability may be an illusion. The results provide the theoretical basis to build a comprehensive and consistent body of knowledge regarding software quality, which is consisted with the set of quality models and the theories explaining the relationships among the elements of the models.

청년기 여성의 하반신 체형에 관한 연구-직접계측항목으로 분류한 하반신 체형 유형과 둔부의 측면.후면 유형과의 대응 관계 분석을 중심으로- (A Study on the Young Aged Womens Lower Body Types-correspondence Lower Body Types by Direct Measurements with Side and Back View Types from Waistline to Gluteal Furrow Line-)

  • 문명옥
    • 한국의류학회지
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    • 제25권8호
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    • pp.1420-1431
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    • 2001
  • This research was done to classify lower body types by direct measurements, side and back view types from waistline to gluteal furrow line individually, and to analyze correspondence these lower body types with side and back view types from waistline to gluteal furrow line. The subjects of this study were 191 female college students from 18 to 25 years old residing in Pusan urban area. Type 1(long and slim) of lower body types by direct measurements was correspond with Type 1(slim curve) and Type 4(slim and protrusive hip) of side view and Type 3(wide and curve) and Type 4(trapezoid shape) of back view. Type 2(short and thick) of lower body types was correspond with Type 3(thick and droopy hip) of side view and Type 1(wide and straight) of back view. Type 3(short and slim) of lower body types was correspond with Type 2(slim and flat hip) of side view and Type 2(narrow and curve) of back view.

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연속적 시·공간관이 반영된 다(多)시점 패션디자인 분석 (An Analysis of Multi-View Fashion Design Reflected in the Perception of Time and Space)

  • 김민지;간호섭
    • 패션비즈니스
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    • 제19권2호
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    • pp.136-148
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    • 2015
  • The purpose of this thesis is to study multi-view fashion design with an analysis of multi-view art's formation and philosophical perspective. The production of unique artwork is dependent on how we see, think and represent what is around us. Multi-view art has great potential as a concept related to the continuity of time and space, it is not limited to space and time but it extends to infinitely, according to the artist's will and imagination. The study of time and space has been used as principles for deriving the formative of multi-view art, and the principles applied for analyzing multi-view fashion design. And the formation of multi-view art is reflected in fashion design. Simultaneity, deconstructivity, continuity and virtuality in terms of multi-view art are support the formation of multi-view fashion design, such as fabrication, expandability, concealment and transparency. As such, it is important to study multi-view fashion design as a creative design method with immense potential for further development.

차량의 사각 지대 제거를 위한 측/후방 카메라 영상 정합 시스템 (A Side-and Rear-View Image Registration System for Eliminating Blind Spots)

  • 박민우;장경호;정순기;윤팔주
    • 한국정보과학회논문지:소프트웨어및응용
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    • 제36권8호
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    • pp.653-663
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    • 2009
  • 본 논문에서는 세 대의 카메라를 이용하여 사각지대를 효과적으로 제거하기 위한 파노라믹 비전 시스템(panoramic vision system)을 제안한다. 차량의 후방에는 광각 카메라를 사용하여 후방 거울(rear-view mirror)로부터 보이지 않는 사각지대를 제거하며, 나머지 두 대의 카메라는 측면 거울(side-view mirror)의 아래에 설치하여 측면 거울로 보지 못하는 사각지대를 제거한다. 좀 더 효과적인 사각지대 제거를 위해서 세 대의 카메라에서 얻어지는 영상을 정합하는 방법을 제공한다. 먼저, 후방 카메라에서 얻은 영상을 보정하고, 보정된 영상에서 focus-of-contraction(FOC)을 구한다. 그 뒤에 측방 카메라의 영상과 후방 카메라의 영상 사이의 호모그래피(homography)를 구한다. 그 다음으로 영상을 차도와 배경 영역으로 분리하고, 호모그래피를 사용하여 분리한 차도를 정합하고, 가상의 평면에 배경을 투영하여 최종정합을 완성한다. 마지막으로 정합된 영상을 보다 효과적으로 보여주기 위한 실린더 파노라마 영상, 가상의 Top-view 시스템, 그리고 차량의 다양한 정보와 함께 사각지대 영상을 보여주는 통합 정보 가시화 영상을 생성하여 제공한다.

공간 뷰 재작성을 위한 점진적 변경 방법 (Incremental Update Methods for Adapting of Spatial Views)

  • 반재훈;문상호;홍봉희
    • 한국정보과학회논문지:데이타베이스
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    • 제27권1호
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    • pp.113-128
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    • 2000
  • 실체화된 공간 뷰가 사용자의 관점에 따라 재정의되면 기존의 실체화된 뷰 객체들을 변경하는 것이 필요하며, 이것을 공간 뷰의 재작성이라 한다. 공간 뷰의 재작성을 위한 방법으로는 재정의된 뷰 정의 질의를 수행하는 재계산 방법보다는 영향 받는 뷰 객체들만을 변경하는 점진적 변경이 더 효율적이다. 이것은 공간 뷰가 기존 뷰와는 달리 공간연산자를 포함하는 공간 질의에 의해 정의되므로 실체화 시간이 많이 걸리기 때문이다. 본 논문에서는 먼저 공간 뷰의 재정의 유형들을 분류하고, 각 유형들에 따라 재작성을 위한 점진적 변경 방법들을 제시한다. 이 방법들에서는 기존의 실체화된 뷰 객체들과 뷰 객체와 대응되는 소스 객체들간의 뷰 유도관련성을 추가 정보로 이용한다. 그리고 점진적 재작성의 유형은 기존의 실체화된 뷰 객체를 변경하는 것과 새로운 뷰 객체를 삽입하는 것으로 분류한다. 본 논문에서 제시한 점진적 재작성을 실현하기 위하여 고딕상에 공간 뷰 재작성기를 설계 및 구현한다. 또한 실제 데이타를 대상으로 재계산 방법과의 성능 평가를 통하여 점진적 재작성의 우수성을 보인다.

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생활가로 유형별 경관평가에 관한 연구 (A study on the view evaluation by each patterns of the life street)

  • 김성호;김한수;김재홍
    • 한국주거학회:학술대회논문집
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    • 한국주거학회 2000년도 학술발표대회논문집
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    • pp.115-122
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    • 2000
  • This study was inverstigated on that a street view is the important point of the town planning. Until now, the street view has formed with senseless and coarse town planning because of lack of understanding of the street view during the urbanization in the same way and total lack of a consistent plan. On the sight of having a critical mind about the street view, this study was performed to present the analyses of the current problems of the street formation as the vivid directions of development for the future city view of the visual quality and the development of comfort.

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생활가로 유형별 경관평가에 관한 연구 (A Study on the view evaluation by each patterns of the life street)

  • 김성호;김한수;정준현
    • 한국주거학회논문집
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    • 제12권3호
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    • pp.117-124
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    • 2001
  • This study was inverstgated on that a street view is the important point of the town planning. Until now, the street view has formed with senseless and coarse town planning because of lack of understanding of the street view during the urbanization in the same way and total lack of a consistent plan. On the sight of having a critical mind about the street view, this study was performed to present the analyses of the current problems of the street formation as the vivid directions of development for the future city view of the visual quality and the development of comfort.

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