• 제목/요약/키워드: Look-Up

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퍼지 Look-up Table을 이용한 엔진 다이나모메타 시스템의 트로틀 벨브 제어 (The Throttle Valve Control of engine Dynamometer system Using Fuzzy Look-up Table)

  • 이상윤;이팔진;신위재;김치원
    • 한국지능시스템학회:학술대회논문집
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    • 한국퍼지및지능시스템학회 1995년도 추계학술대회 학술발표 논문집
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    • pp.125-130
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    • 1995
  • Recently, the vehicle engine requried precision control of Air-Fuel rate and rigid restriction of exhaust gas. Therefore, we demanded excellent measuring equipment so as to improve of engine performance. Specially, throttle valve control is very important part in the engine control, because structure of engine dynamometer system is very important part in the engine control, because structure of engine dynamometer system is very complicate and it has nonlinear elements which is influenced of disturbance about vibration, a heat, a cooling, energy loss so on. In this study, we propose the method that the control technique using Fuzzy Look-up table and we obtained the satisfying result from realized the control system.

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집적영상 시스템에서 룩업테이블을 사용한 요소영상 배열의 효과적인 생성 (Generating the Array of Elemental Image efficiently by using Look-Up Table in Integral Imaging System)

  • 권영만;김승철;김은수
    • 한국통신학회논문지
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    • 제33권12C호
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    • pp.1068-1074
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    • 2008
  • 본 논문에서는 컴퓨터적으로 생성하는 집적영상 시스템에서 룩업테이블(Look-up Table)을 사용해서 요소영상 배열을 효과적으로 생성하는 알고리즘을 제안한다. 이 알고리즘은 물체의 점이 픽업 면에 투영되는 위치를 찾기 위해서 x와 y의 투영 점에 대해서 서로 독립적인 룩업테이블을 작성하고 이를 사용해서 요소영상 배열을 생성하는 계산 속도를 개선하였다. 제안된 알고리즘과 기존 알고리즘들의 계산 시간을 실험을 통해서 비교한 결과 제안 된 알고리즘이 더 효율적임을 증명하였다.

IPMSM 토크 제어를 위한 곡면 적합을 이용한 Look Up Table 생성 및 분할 방법 (Surface Fitted Look Up Table and Division Method for IPMSM Torque Control)

  • 허홍준;김장목;박귀열;안태규;신덕웅
    • 전력전자학회:학술대회논문집
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    • 전력전자학회 2014년도 전력전자학술대회 논문집
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    • pp.126-127
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    • 2014
  • 기존 IPMSM (Interior Permanent Magnet Synchronous Motor) 제어를 위한 LUT (Look Up Table)방식은 입력한 일정 간격의 데이터를 이용한 선형 보간 방법이 주로 사용되었다. 하지만, 이러한 방식은 LUT 구성을 위해 많은 데이터를 요구하므로, DSP 메모리 용량에 LUT 구성의 한계가 존재한다. 또한, 많은 양의 데이터를 관리해야하는 단점을 가지고 있다. 본 논문에서는 이러한 단점을 보완하기 위하여 영역 분할을 이용한 다항식 곡면 적합 LUT 구성을 제안하였다. 다항식 곡면 적합을 이용한 LUT 구성 방법은, 관리해야하는 데이터양을 비약적으로 줄일 수 있는 장점을 가지고 있다. 제안한 방법의 효용성은 실험을 통하여 증명하였다.

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단서분석(端緖分析)을 통(通)한 패션트렌드 연구(硏究) II (Research of Fashion Trend through Analysis on Cue II)

  • 이영재
    • 패션비즈니스
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    • 제6권2호
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    • pp.67-76
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    • 2002
  • This research examines the characteristic trends through analysis on cue in the contemporary fashion distinctly and systematically. It is carried out by both qualitative analysis and quantitative analysis. In the qualitative analysis, the four important street fashions of neo-mods/jazz, neo-hippie/grunge, sportivecasual and technos/cyber-punk are grouped. In the quantitative analysis, statistical data are sampled from Collection II of the 1990s S/S. It takes frequency, percentage, $\chi^2$-test and etc. by using the comprehensive tools for statistical treatment. There were significant differences between the S/S fashion. According to the cues, there are also significant differences between the fashion in the 1990s. In 'Neo-Mos/Jazz' style shows highly androgynous look, deep and strong tone, green/blue colors, natural fabric, stripe pattern, long hair style, and hided make-up. 'Neo-hippie/gnenge' style shows highly folklore look, vivid tone purple colors, seethrough/knit fabric, natural /traditional pattern, decorative hair special makeup. 'Sportive casuals' style shows highly sportive look, greish tone, white/grey colours, natural fabric, solid patten, bobbed hair, and natural make-up. 'Techno/cyber punk style shows highly comocorps look, pale tone black colors avangard fabric, solid patten, punk/dyed hair special make-up.

복식에 나타난 타투 룩(Tattoo Look) 패션의 표현 특성 (The Expressional Characteristic of Modern Tattoo Look fashion)

  • 윤정혜;유영선
    • 복식
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    • 제51권3호
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    • pp.87-98
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    • 2001
  • The purpose of this study is to examine the tattoo look in modern fashion from the aspects of 'expression techniques' and 'aesthetic properties'. Tattoos are one of the body decoration which have been continued for a long time all over the world and have contained various meanings in : invocation. symbolization. solidification, exotic tastes, and body decoration. While tattoos have been progressed for the past time, they have been enlarged into body painting, make-up, and even into body art. Besides, their technical skills and equipments have been also developed. Therefore, tattoos are neither tabooed nor restricted in lower class, such as gangsters, bickers, prostitutes, etc., any longer. They are showed in everywhere of our society, running on the fashion. Specially, in fashion, they are shown through the 'tattoo look' designed by talented fashion designers. Futhermore, tattoos are one of the things which have gotten a new value under the Post-modernism and the turning of the century. The various tattoo looks in modern fashion are classified into four categories, according to the expression techniques, the use of see-through, reappearance of primitive body-decoration, application of tattoo patterns, application of street styles'tattoo patterns, make-up & body painting. And, they are also classified into four categories, according to the aesthetic properties Exoticism, Eroticism, Primitivism, and Grotesque.

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룩업테이블을 이용한 스캐너 캘리브레이션에 관한 연구 (A Study on the Scanner Calibration Method Using Look-up Table)

  • 신춘범;강상훈
    • 한국인쇄학회지
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    • 제20권1호
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    • pp.79-90
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    • 2002
  • Recently, the research about color matching for the input/output devices of printing process is progressing rapidly by the digitization. The calibration method of flatbed scanner widely used as an input device for prepress process is especially important for color proofing of high quality color prints. In this paper, scanner calibration method using 3-dimensional look-up table and tetrahedral interpolation was examined and analysed comparatively on the three kinds of original copies, such as photograph, dye sublimation proof and ink jet print for IT8.T/2 target.

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An Efficient Interpolation FIR Filter Using LUT

  • Kim, Dae-Ik;Lee, Chang-Ki
    • Journal of information and communication convergence engineering
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    • 제7권2호
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    • pp.219-222
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    • 2009
  • An efficient interpolation FIR filter structure for high-density and low-power electronic devices is proposed. The proposed structure is based on polyphase decomposition property and look-up table method. By computer-aided design simulations, it is shown that the use of the proposed method can result in reduction in the number of gates by 54% and can reduce power consumption by 9%.

Equalizing pulse with error diffusion technique using Look-up-Table and subfield pattern for reducing dynamic false contour

  • Seo, Ki-Ho;Whang, Ki-Woong
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2003년도 International Meeting on Information Display
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    • pp.321-324
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    • 2003
  • We reported the method for the relatively simple equalizing pulse to reduce dynamic false contour. Equalizing pulse is determined by look-up-table and moving direction and velocity of the image. Used lookup-table is a few. If image moves to right or left, necessary LUT is only one for the velocity of 1 pixel/tvfield to right or left. This technique makes the process simple after obtaining motion information.

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조견표를 이용한 무직류 및 최소대역폭 이진선로부호의 설계 (Design of DC-free and minimum bandwidth binary line codes by look-up table)

  • 장창기;주언경
    • 한국통신학회논문지
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    • 제21권10호
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    • pp.2653-2659
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    • 1996
  • In this paper, DC-free and minimum bandwidth binary line codes with look-up table are proposed and their performances are analyzed. As results of performance analysis, the proposed codes are shown to have spectral nulls at DC and Nyquist frequency. Among the proposed codes, binary line codes of which both codeword digital sum and alternating digital sum are zero have lower code rate but better spectral characteristics. Furthermore, binary line codes which consist of all codewords including those with nonzero digital sum and alternating digital sum have worese spectral characteristics but higher code rate.

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룩업테이블 기반 실시간 비선형 렌즈플레어 렌더링 방법 (Real-Time Nonlinear Lens-Flare Rendering Method Based on Look-Up Table)

  • 조성훈;정유나;이성길
    • 정보과학회 논문지
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    • 제44권3호
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    • pp.253-260
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    • 2017
  • 컴퓨터그래픽스에서 고품질의 렌즈 플레어 생성은 대부분 오프라인 렌더링을 사용해왔다. 최근, 행렬 기반의 근사를 사용하여 실시간 응용에 적합한 고품질의 렌즈 플레어 생성이 가능해졌지만, 렌즈플레어의 선형 패턴만 지원하므로 그 품질이 저하되었다. 이에 본 연구는 비선형 렌즈 플레어 패턴을 선형 패턴의 렌즈 플레어 렌더링에 블렌딩하여 선형/비선형 패턴을 모두 포함하는 고품질의 렌즈 플레어 렌더링 방법을 소개한다. 비선형패턴은 오프라인에서 미리 렌더링하거나 사진을 찍어 룩업테이블에 저장하고, 온라인 렌더링에서는 광원의 각도에 따라 읽어오기만 하므로, 기존의 방법보다 고품질을 가지면서도 성능저하가 거의 없는 고성능 렌더링이 가능하다.