• Title/Summary/Keyword: 다중 창

Search Result 122, Processing Time 0.029 seconds

Angular Multiplexed Holographic Memory System using Moving Window on LCD (LCD에서 움직이는 창을 이용한 각다중화 홀로그래픽 메모리 시스템)

  • 김수길;김규태;김은수
    • Journal of the Korean Institute of Telematics and Electronics D
    • /
    • v.35D no.9
    • /
    • pp.70-76
    • /
    • 1998
  • By controlling the pixel of a LCD spatial light modulator electronically, we made a real-time moving window passing through the light on a LCD spatial light modulator. By using this LCD moving window, we suggested an angular multiplexed holographic memory system and in case of windows of 10$\times$10 pixels and 2$\times$2 pixels the total numbers of address are 1,536 and 38,400, respectively. To demonstrate the feasibility of the proposed method, we recorded and reconstructed 30 images by 30 input addresses.

  • PDF

A Novel Fractal-Space Multiplexing using Moving Window and Double-Focusing Lens (움직이는 창과 이중 초점 렌즈를 이용한 프랙탈-공간 다중화 기법)

  • Kim, Soo-Gil
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
    • /
    • v.16 no.6
    • /
    • pp.1-6
    • /
    • 2002
  • We propose a novel fractal-space multiplexing holographic memory system using moving window and double-focusing lens, which can eliminate crosstalk due to two neighboring moving window rows in the vertical direction of the conventional moving window holographic memory system, and demonstrated its feasibility through optical experiments.

Multiple Lapse Time Window Analysis of the Korean Peninsula Considering Focal Depth (진원 깊이를 고려한 한반도 다중지연시간창 해석)

  • Chung, Tae Woong;Rachman, Asep Nur
    • Geophysics and Geophysical Exploration
    • /
    • v.16 no.4
    • /
    • pp.293-299
    • /
    • 2013
  • The recent Multiple Lapse Time Window (MLTW) analysis of Korean Peninsula event showed that the focal depth was far greater influence factor than the velocity structure of the model, applying the analysis of the direct simulation Monte Carlo (DSMC) method. Thus, using the events with focal depth of about 10 km, this study considered 330 paths connecting 41 events and 71 stations, and re-examined uniform and depth-dependent velocity models previously studied. As a result, the residual of misfit function greatly decrease from analytic model to DSMC model, reflecting variation of the focal depth from 0 to 10 km. On the other hand, the difference of residuals for each velocity model were relatively small.

WOI : Determining Area of Interest and Gaze Analysis for Task Switching in a Window Unit Behavior Measurement in Windowing System GUI (WOI : 윈도윙 시스템 GUI에서의 창 단위 작업 전환 행위 측정을 위한 관심영역 지정 및 시선 분석)

  • Ko, Eunji;Choi, Sun-Young
    • Journal of the Korea Institute of Information and Communication Engineering
    • /
    • v.20 no.5
    • /
    • pp.963-971
    • /
    • 2016
  • This paper is a research of gaze analysis for measuring task switching behavior at multiple windows in GUI of windowing system. Previous methods that define area of interest for categorizing gaze had difficulties to define dynamic content that disappears or changes over time. On the other hand, this study suggests a new method to categorize gaze that defines Area of interest in a unit of window during the eye tracking experiment. In this paper, we constructed the conception of WOI(Window of Interest) in GUI of windowing system. Therefore, we developed a system using an eye tracker device and implemented a number of experiments. In addition, we analyzed the number of task switching and proportion of watched content. The method in the study comprehend from previous researches as it can measure and analyze the multi-tasking behaviors using multiple numbers of windows.

Multiple Lapse Time Window Analysis using Focal Mechanism (진원함수를 고려한 다중지연시간창 해석)

  • Chung, Tae-Woong;Yoshimoto, Kazuo
    • Geophysics and Geophysical Exploration
    • /
    • v.15 no.2
    • /
    • pp.85-91
    • /
    • 2012
  • Multiple Lapse Time Window (MLTW) analysis for obtaining intrinsic attenuation value require numerous data without directional bias to compensate focal mechanism. The first window of MLTW, therefore, shows large deviation in fitting smoothed theoretical curve. The information on the focal mechanism may reduce burdens of number and distribution. This study combined algorithm of computing focal mechanism to DSMC method by Yoshimoto (2000). However, the MLTW method based on the numerous data was not applicable to this study, because of the limited data to the almost same fault plane solution. This study showed that the available data was too insufficient to construct smoothed theoretical curve, although the deviation of the first window was improved. Instead of conventional solution by more data, the study seems to be needed for new constraints to obtain smoothed curve.

A Stereo Matching Algorithm using New Multiple Windows (새로운 다중 창을 이용한 스테레오 정합 알고리즘)

  • Kim, Choong-Won
    • The Journal of the Korea institute of electronic communication sciences
    • /
    • v.6 no.3
    • /
    • pp.349-354
    • /
    • 2011
  • In this paper we propose a simple efficient stereo matching algorithm to recover sharp object boundaries and to obtain dense disparity map using new multiple line shape windows. To this end, we consider left-right consistency and unique constraint. From the experimental results it is found that the proposed algorithm is very good for obtaining sharp and dense disparity maps for stereo image pairs.

RAG-based Image Segmentation Using Multiple Windows (RAG 기반 다중 창 영상 분할 (1))

  • Lee, Sang-Hoon
    • Korean Journal of Remote Sensing
    • /
    • v.22 no.6
    • /
    • pp.601-612
    • /
    • 2006
  • This study proposes RAG (Region Adjancency Graph)-based image segmentation for large imagery in remote sensing. The proposed algorithm uses CN-chain linking for computational efficiency and multi-window operation of sliding structure for memory efficiency. Region-merging due to RAG is a process to find an edge of the best merge and update the graph according to the merge. The CN-chain linking constructs a chain of the closest neighbors and finds the edge for merging two adjacent regions. It makes the computation time increase as much as an exact multiple in the increasement of image size. An RNV (Regional Neighbor Vector) is used to update the RAG according to the change in image configuration due to merging at each step. The analysis of large images requires an enormous amount of computational memory. The proposed sliding multi-window operation with horizontal structure considerably the memory capacity required for the analysis and then make it possible to apply the RAG-based segmentation for very large images. In this study, the proposed algorithm has been extensively evaluated using simulated images and the results have shown its potentiality for the application of remotely-sensed imagery.

The Signal Acquisition Algorithm for Ultra Wide-band Communication Systems (UWB 통신시스템에서 동기 획득 알고리즘)

  • Park, Dae-Heon;Kang, Beom-Jin;Park, Jang-Woo;Cho, Sung-Eon
    • Journal of Advanced Navigation Technology
    • /
    • v.12 no.2
    • /
    • pp.146-153
    • /
    • 2008
  • Due to the extremely short pulse in the Ultra-Wideband (UWB) technology, the accurate synchronization acquisition method is very important for both high data-rate WPAN and low data-rate WPAN. In this paper, we propose the synchronization acquisition algorithm based on two-step signal search method to acquire the synchronization in the UWB multi-path channel. At the first step, the search window is divided by two and the window that has higher power is chosen as a next search window. This operation is repeated until the measure power of the search window is smaller than the threshold value. At the second step, we employ Linear Search algorithm to the search window obtained at the first step for fine search. The proposed algorithm is proved that the synchronization acquisition is faster than the parallel search algorithm and it shows good performance in environment of the SNR extreme changes by the simulation.

  • PDF

Data Dissemination Protocol Supporting the Mobility for Tightly Coupled Sink Groups in Wireless Sensor Networks (무선 센서 망에서의 밀집 싱크 그룹을 위한 이동성 보장 데이터 전달 프로토콜)

  • Choi, Young-Hwan;Yu, Fu-Cai;Park, Soo-Chang;Lee, Eui-Sin;Kim, Sang-Ha
    • Proceedings of the Korean Information Science Society Conference
    • /
    • 2007.10d
    • /
    • pp.160-165
    • /
    • 2007
  • 무선 센서 망에서 다중싱크 이동성에 관련된 연구는 단순히 독립된 단일싱크 이동성 확장에 기인한다. 하지만, 다중 싱크의 경우 싱크 상호간의 이동 결집도에 따라 두 가지 그룹으로 분류될 수 있다: 싱크간의 산재된 싱크그룹(loosely coupled sink group)과 밀집된 싱크그룹(tightly coupled sink group)이다. 전자는 기존 다중싱크 연구에서 가정하고 있는 일반적인 모델이다. 반면, 후자의 예로는 전쟁터에서 동일한 작전을 수행하는 작은 분대 단위의 군인들의 이동성 등이 있다. 본 논문은 밀집된 싱크그룹 이동성을 갖는 다중 싱크를 위한 데이터전달 프로토콜을 제안한다.

  • PDF