• Title, Summary, Keyword: Motion Capture System

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Jitter Correction of the Face Motion Capture Data for 3D Animation

  • Lee, Junsang;Han, Soowhan;Lee, Imgeun
    • Journal of the Korea Society of Computer and Information
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    • v.20 no.9
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    • pp.39-45
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    • 2015
  • Along with the advance of digital technology, various methods are adopted for capturing the 3D animating data. Especially, in 3D animation production market, the motion capture system is widely used to make films, games, and animation contents. The technique quickly tracks the movements of the actor and translate the data to use as animating character's motion. Thus the animation characters are able to mimic the natural motion and gesture, even face expression. However, the conventional motion capture system needs tricky conditions, such as space, light, number of camera etc. Furthermore the data acquired from the motion capture system is frequently corrupted by noise, drift and surrounding environment. In this paper, we introduce the post production techniques to stabilizing the jitters of motion capture data from the low cost handy system based on Kinect.

A motion capture and mimic system (운동포착 및 재현 시스템)

  • 윤중선;최원수
    • 제어로봇시스템학회:학술대회논문집
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    • pp.1344-1347
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    • 1996
  • A general procedure for motion capture and mimic system has been delineated. Utilizing sensors operated in the magnetic fields, complex and optimized movements are easily digitized to analyze and follow. Design concepts of the system are modular, open, and user friendly to ensure the overall system performance. The system consists of motion capture, visualization, plan, mimic and GUI modules. This procedure is currently being implemented on a virtual cyber cube.

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Implementation of New Markup Language for Integrating of Motion Capture Data formats (모션 캡쳐 데이타 통합을 위한 새로운 마크업 언어의 구현)

  • 정현숙;이일병
    • Journal of KIISE:Software and Applications
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    • v.30 no.3_4
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    • pp.219-230
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    • 2003
  • Motion capture technology is widely used to make a realistic motion in these days. So, motion capture data is required to exchange between many animators in a work group. But different motion capture devices have different motion rapture data formats. Thus it is difficult that a animator reuse and exchange motion capture data in a storage. In this paper, we proposes a standard format for integrating a different motion capture data format. In addition, we proposes a framework of a system that manage motion capture data using our standard format. Our standard format is called MCML(Motion Capture Markup Language). It is a markup language for motion capture data and based on XML(extensable Markup Language). Our system to manage motion capture data consists of a several component - MCML Converter, MCML , MCML Editor, Motion Viewer.

Identification of user's Motion Patterns using Motion Capture System

  • Jung, Kwang Tae;Lee, Jaein
    • Journal of the Ergonomics Society of Korea
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    • v.33 no.6
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    • pp.453-463
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    • 2014
  • Objective:The purpose of this study is to identify motion patterns for cellular phone and propose a method to identify motion patterns using a motion capture system. Background: In a smart device, the introduction of tangible interaction that can provide new experience to user plays an important role for improving user's emotional satisfaction. Firstly, user's motion patterns have to be identified to provide an interaction type using user's gesture or motion. Method: In this study, a method to identify motion patterns using a motion capture system and user's motion patterns for using cellular phone was studied. Twenty-two subjects participated in this study. User's motion patterns were identified through motion analysis. Results: Typical motion patterns for shaking, shaking left and right, shaking up and down, and turning for using cellular phone were identified. Velocity and acceleration for each typical motion pattern were identified, too. Conclusion: A motion capture system could be effectively used to identify user's motion patterns for using cellular phone. Application: Typical motion patterns can be used to develop a tangible user interface for handheld device such as smart phone and a method to identify motion patterns using motion analysis can be applied in motion patterns identification of smart device.

ESTIMATING THE MOTION OF THE HUMAN JOINTS USING OPTICAL MOTION CAPTURE SYSTEM

  • Park, Jun-Young;Kyota, Fumihito;Saito, Suguru;Nakajima, Masayuki
    • Proceedings of the Korean Society of Broadcast Engineers Conference
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    • pp.764-767
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    • 2009
  • Motion capture systems allow to measure the precise position of markers on the human body in real time. These captured motion data, the marker position data, have to be fitted by a human skeleton model to represent the motion of the human. Typical human skeleton models approximate the joints using a ball joint model. However, because this model cannot represent the human skeleton precisely, errors between the motion data and the movements of the simplified human skeleton model happen. We propose in this paper a method for measuring a translation component of wrist, and elbow joints on upper limb using optical motion capture system. Then we study the errors between the ball joint model and acquired motion data. In addition, we discuss the problem to estimate motion of human joint using optical motion capture system.

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Development of a Real Time Three-Dimensional Motion Capture System by Using Single PSD Unit (단일 PSD를 이용한 실시간 3차원 모션캡쳐 시스템 개발)

  • Jo, Yong-Jun;Oh, Choon-Suk;Ryu, Young-Kee
    • Journal of Institute of Control, Robotics and Systems
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    • v.12 no.11
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    • pp.1074-1080
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    • 2006
  • Motion capture systems are gaining popularity in entertainment, medicine, sports, education, and industry, with animation and gaming applications for entertainment taking the lead. A wide variety of systems are available for motion capture, but most of them are complicated and expensive. In the general class of optical motion capture, two or more optical sensors are needed to measure the 3D positions of the markers attached to the body. Recently, a 3D motion capture system using two Position Sensitive Detector (PSD) optical sensors was introduced to capture high-speed motion of an active infrared LED marker. The PSD-based system, however, is limited by a geometric calibration procedure for two PSD sensor modules that is too difficult for common customers. In this research, we have introduced a new system that used a single PSD sensor unit to obtain 3D positions of active IR LED-based markers. This new system is easy to calibrate and inexpensive.

Methods of Motion Capturing Intangible Cultural Properties in Japan (모션켑쳐(Motion Capture)를 이용한 무형문화재의 기록화 방안에 대한 제연구)

  • Park, Weon-Mo
    • MUNHWAJAE Korean Journal of Cultural Heritage Studies
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    • v.36
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    • pp.335-346
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    • 2003
  • With the development of media and computer, Motion Capture system, recently used in the entertainment and computer graphics, is emerging as a new recording method. Motion Capture is a system that records time-varying position of sensors which are attached to a objects and translates it to 3-D coordinate on computer. The motion of object displays the time-varying positions of each sensors that are graphed, or the line connected man-shaped model's movements on the computer monitor. And by adding computer graphic character to it, the various angled images, which are difficult to be perceived on the stage, can be easily recorded. Recently in Japan, Motion Capture system is being actively studied in order to use it in recording and preserving the intangible cultural assets of dance and art. Especially, Warabiza in Tazawako art village at Akita plays the leading role in this area through the project to symbolize and establish the archive of cultural dance, further, Ritsumeikan Univ. is develops the system for coupling the motion capture system to Labanotation. This article introduces the motion capture and it's related studies in Japan, which are being actively studied as a new recording method of intangible cultural assets.

Real-time Marker-free Motion Capture System to Create an Agent in the Virtual Space (가상 공간에서 에이전트 생성을 위한 실시간 마커프리 모션캡쳐 시스템)

  • 김성은;이란희;박창준;이인호
    • Proceedings of the IEEK Conference
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    • pp.199-202
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    • 2002
  • We described a real-time 3D computer vision system called MIMIC(Motion interface f Motion information Capture system) that can capture and save motion of an actor. This system analyzes input images from vision sensors and searches feature information like a head, hands, and feet. Moreover, this estimates intermediated joints as an elbow and hee using feature information and makes 3D human model having 20 joints. This virtual human model mimics the motion of an actor in real-time. Therefore this system can realize the movement of an actor unaffectedly because of making intermediated joint for complete human body contrary to other marker-free motion capture system.

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Motion Capture of the Human Body Using Multiple Depth Sensors

  • Kim, Yejin;Baek, Seongmin;Bae, Byung-Chull
    • ETRI Journal
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    • v.39 no.2
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    • pp.181-190
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    • 2017
  • The movements of the human body are difficult to capture owing to the complexity of the three-dimensional skeleton model and occlusion problems. In this paper, we propose a motion capture system that tracks dynamic human motions in real time. Without using external markers, the proposed system adopts multiple depth sensors (Microsoft Kinect) to overcome the occlusion and body rotation problems. To combine the joint data retrieved from the multiple sensors, our calibration process samples a point cloud from depth images and unifies the coordinate systems in point clouds into a single coordinate system via the iterative closest point method. Using noisy skeletal data from sensors, a posture reconstruction method is introduced to estimate the optimal joint positions for consistent motion generation. Based on the high tracking accuracy of the proposed system, we demonstrate that our system is applicable to various motion-based training programs in dance and Taekwondo.

The Stabilizing Method for Face Tracking Data from Markerless Motion Capture System (마커리스 방식의 얼굴 모션캡쳐 데이터 안정화 기법)

  • Lee, Jun-sang;Lee, Imgenu
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • pp.773-774
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    • 2015
  • Motion capture tracks the movement of the actor and quickly transfers it as a motion data for animation purposes. The data from the motion capture can be easily controled and applied to animating characters to make realistic movement. But conventional motion capture system is very expensive and need spacious room for its own. Recently Kinect based motion capture is widely used for its simplicity and comparably low budget. However, the Kinect based motion capture data is often corrupted by jitter and unstable data. In this paper, we propose the novel post processing method to stabilize the unwanted jitter in the motion capture data.

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