• Title, Summary, Keyword: complex motion

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A Multi-Modal Complex Motion Authoring Tool for Creating Robot Contents

  • Seok, Kwang-Ho;Kim, Yoon-Sang
    • Journal of Korea Multimedia Society
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    • v.13 no.6
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    • pp.924-932
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    • 2010
  • This paper proposes a multi-modal complex motion authoring tool for creating robot contents. The proposed tool is user-friendly and allows general users without much knowledge about robots, including children, women and the elderly, to easily edit and modify robot contents. Furthermore, the tool uses multi-modal data including graphic motion, voice and music to simulate user-created robot contents in the 3D virtual environment. This allows the user to not only view the authoring process in real time but also transmit the final authored contents to control the robot. The validity of the proposed tool was examined based on simulations using the authored multi-modal complex motion robot contents as well as experiments of actual robot motions.

Moving Object Tracking Method in Video Data Using Color Segmentation (칼라 분할 방식을 이용한 비디오 영상에서의 움직이는 물체의 검출과 추적)

  • 이재호;조수현;김회율
    • Proceedings of the IEEK Conference
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    • pp.219-222
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    • 2001
  • Moving objects in video data are main elements for video analysis and retrieval. In this paper, we propose a new algorithm for tracking and segmenting moving objects in color image sequences that include complex camera motion such as zoom, pan and rotating. The Proposed algorithm is based on the Mean-shift color segmentation and stochastic region matching method. For segmenting moving objects, each sequence is divided into a set of similar color regions using Mean-shift color segmentation algorithm. Each segmented region is matched to the corresponding region in the subsequent frame. The motion vector of each matched region is then estimated and these motion vectors are summed to estimate global motion. Once motion vectors are estimated for all frame of video sequences, independently moving regions can be segmented by comparing their trajectories with that of global motion. Finally, segmented regions are merged into the independently moving object by comparing the similarities of trajectories, positions and emerging period. The experimental results show that the proposed algorithm is capable of segmenting independently moving objects in the video sequences including complex camera motion.

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Directional Harmonic Wavelet Analysis (방향성 조화 웨이블렛 해석 기법)

  • 한윤식;이종원
    • Journal of KSNVE
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    • v.8 no.5
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    • pp.957-963
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    • 1998
  • A new signal processing technique, the directional harmonic wavelet map(dHWM), is presented to characterize the instantaneous planar motion of a measurement point in a structure from its transient complex-valued vibration signal. It is proven that the directional auto-HWM essentially tracks the shape and directively of the instantaneous planar motion, whereas the phase of the directional cross-HWM indicates its inclination angle. Finally, the technique is suessfully applied to an automobile engine for characterization of its transient motion during crank-on/idling/engine-off.

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The Influence of 4 wks Complex Therapeutic Exercises on Visual Analog Scale of Pain and Range of Motion for Middle-Aged Women with Breast Cancer-Related Lymphedema (4주간 복합 운동치료가 유방암 림프부종 중년여성의 통증, 견관절 가동범위에 미치는 영향)

  • Lee, Byung-Ki;Lee, Jae-Sub;Kim, Tae-Soo
    • Journal of the Korean Society of Physical Medicine
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    • v.8 no.2
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    • pp.153-161
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    • 2013
  • PURPOSE: This study aimed to investigate the effect of complex theraputic exercise on visual analog scale of pain, shoulder' range of motion for middle-aged women with breast cancer related lymphedema. METHODS: The 14 middle-aged women involved voluntary in this study and then they were divided into two groups(n =7 per group). The complex exercise program was implemented over 4 weeks, 60 minutes per day, with 3 types of exercise for stimulation whereas the control group was performed a classical decongestive physiotherapy in a same day. For data analysis, the mean and standard deviation were estimated; 2 way repeated measures ANOVA was carried out. RESULTS: First, The level of VAS was significantly reduced on time, interaction effect in the group. Second, most factors of ROM were significantly increased on time, interaction effect whereas extension was not significantly increased. CONCLUSION: In conclusion, Our results showed that complex therapeutic exercise could improve or maintain VAS and ROM of shoulder joint for middle-aged women with breast cancer related lymphedema.

Effects of Natural Independent Visual Background for Reducing Simulator Sickness (자연형 IVB(Independent Visual Background)의 Simulator Sickness 감소효과)

  • 김도회;임정위
    • Journal of the Society of Korea Industrial and Systems Engineering
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    • v.25 no.3
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    • pp.28-33
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    • 2002
  • Several studies indicated that an independent visual background (IVB) reduced simulator sickness (SS) and balance disturbance associated with exposure to virtual environments (VEs) and motion simulators. A recent study showed that an IVB comprised of an earth-fixed grid was less effective in a complex driving simulator than in a simple VE. Subjects' post-experiment reports indicated that the VE motion "induced" motion of the earth-fixed grid m. This led to the suggestion that an IVB comprised of clouds would be less subject to induced motion and therefore would alleviate nausea more effectively than a grid IVB. Clouds are "natural" and are usually perceived as relatively stable, whereas a grid has no inherent stability. 12 subjects were exposed to complex motion through a simulated environment in a driving simulator under 3 IVB conditions: grid, less clouds, many clouds. They reported less nausea when the many-cloud IVB was used relative to the grid IVB condition. grid IVB condition.

Lead-Lag Controller Design of Direct Drive Servo Valve Using Complex Method (컴플렉스법에 의한 직접구동형서보밸브의 진상-지상 제어기 설계)

  • Lee, Seong-Rae
    • Proceedings of the KSME Conference
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    • pp.1590-1595
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    • 2003
  • Direct drive servovalve(DDV) is a kind of one-stage valve since the rotary motion of DC motor is directly transferred to the linear motion of valve spool through the link. Since the structure of DDV is simple, it is less expensive, more reliable and offers reduced internal leakage and reduced sensitivity to fluid contamination. However, the flow force effect on the spool motion is significant such that it induces large steady-state error in a step response. If the proportional control gain is increased to reduce the steady-state error, the system becomes unstable. In order to satisfy the system design requirements, the lead-lag controller is designed using the complex method that is one kind of constrained direct search method.

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Transfer function approximation of motion-induced aerodynamic forces with rational functions

  • Kirch, Arno;Peil, Udo
    • Wind and Structures
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    • v.14 no.2
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    • pp.133-151
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    • 2011
  • For a detailed investigation of the dynamic behaviour of slender bridges under wind action especially the motion-induced fluid forces should be available not only for harmonic motions but also for more general ones. If linear transfer behaviour is assumed, the force-displacement relation for almost arbitrary motions can be handled in the frequency domain using aerodynamic transfer functions. In aerospace engineering as well as in bridge engineering, these functions are usually approximated by special kinds of complex-valued rational functions which depend on complex frequencies. The quality of this approximation is evaluated for several bridge cross sections in this article. It is shown that rational functions are for some sections scarcely suitable to realistically represent the transfer behaviour of motion-induced aerodynamic forces for arbitrarily complex frequencies.

Complex Modal Testing for Rotating Disks with Support Motion (지지부의 운동을 가진 회전원판의 복소모드시험)

  • Ham, Jong-Seok;Lee, Chong-Won
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • pp.1513-1520
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    • 2000
  • Complex modal testing method for rotating disks with support motion is introduced which handles the pairs of two point excitation and responses of the disk as complex input and output, respectively. This method utilizes the directivity information and the separation over the rotational speed of forward and backward traveling wave modes or bending coupled modes in the directional frequency response functions(dFRFs). This method synthesizes the normal/reverse dFRFs and complex wave dFRF, which were originally applied to rotating shaft and rotating disk, respectively, and is applied to complex system with dynamically coupled rotating disks and shaft. Experiments with a commercial hard disk drive spindle system demonstrate the validity of this method.

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A Study on the Design Factors of Complex Damper for Ventilation and Fire Protection (환기 및 소방용 복합댐퍼의 설계인자에 관한 연구)

  • Lee, Dong-Myung
    • Fire Science and Engineering
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    • v.25 no.4
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    • pp.42-47
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    • 2011
  • This study carried out the design and analysis of complex damper as basis study for development of complex damper for ventilation and fire protection. This study established design and analysis theory of complex damper based on process, kinematics mechanism and mechanism modelling of complex damper. And this study established engineering data construction and a source technology that can design each element of complex damper through motion analysis simulation based on design and analysis theory. Therefore, it got result that can apply comprehensively in development of complex damper for ventilation and fire protection from this study. Also, it sees that can ready control means and technological countermeasure of smoke to developed of complex damper with this study.

Salient Motion Information Detection Method Using Weighted Subtraction Image and Motion Vector (가중치 차 영상과 움직임 벡터를 이용한 두드러진 움직임 정보 검출 방법)

  • Kim, Sun-Woo;Ha, Tae-Ryeong;Park, Chun-Bae;Choi, Yeon-Sung
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.11 no.4
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    • pp.779-785
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    • 2007
  • Moving object detection is very important for video surveillance in modern days. In special case, we can categorize motions into two types-salient and non-salient motion. In this paper, we first calculate temporal difference image for extract moving objects and adapt to dynamic environments and next, we also propose a new algorithm to detect salient motion information in complex environment by combining temporal difference image and binary block image which is calculated by motion vector using the newest MPEG-4 and EPZS, and it is very effective to detect objects in a complex environment that many various motions are mixed.