• Title, Summary, Keyword: human gait analysis

Search Result 102, Processing Time 0.051 seconds

Automated Markerless Analysis of Human Gait Motion for Recognition and Classification

  • Yoo, Jang-Hee;Nixon, Mark S.
    • ETRI Journal
    • /
    • v.33 no.2
    • /
    • pp.259-266
    • /
    • 2011
  • We present a new method for an automated markerless system to describe, analyze, and classify human gait motion. The automated system consists of three stages: I) detection and extraction of the moving human body and its contour from image sequences, ii) extraction of gait figures by the joint angles and body points, and iii) analysis of motion parameters and feature extraction for classifying human gait. A sequential set of 2D stick figures is used to represent the human gait motion, and the features based on motion parameters are determined from the sequence of extracted gait figures. Then, a k-nearest neighbor classifier is used to classify the gait patterns. In experiments, this provides an alternative estimate of biomechanical parameters on a large population of subjects, suggesting that the estimate of variance by marker-based techniques appeared generous. This is a very effective and well-defined representation method for analyzing the gait motion. As such, the markerless approach confirms uniqueness of the gait as earlier studies and encourages further development along these lines.

Control Gait Pattern of Biped Robot based on Human's Sagittal Plane Gait Energy (인간 관절 에너지 분석을 통한 이족로봇의 자연스러운 보행 제어)

  • Ha, Seung-Suk;Han, Young-Joon;Hahn, Hern-Soo
    • Journal of Institute of Control, Robotics and Systems
    • /
    • v.14 no.2
    • /
    • pp.148-155
    • /
    • 2008
  • This paper proposes a method of adaptively generating a gait pattern of biped robot. The gait synthesis is based on human's gait pattern analysis. The proposed method can easily be applied to generate the natural and stable gait pattern of any biped robot. To analyze the human's gait pattern, sequential images of the human's gait on the sagittal plane are acquired from which the gait control values are extracted. The gait pattern of biped robot on the sagittal plane is adaptively generated by a genetic algorithm using the human's gait control values. However, gait trajectories of the biped robot on the sagittal plane are not enough to construct the complete gait pattern because the biped robot moves on 3-dimension space. Therefore, the gait pattern on the frontal plane, generated from Zero Moment Point (ZMP), is added to the gait one acquired on the sagittal plane. Consequently, the natural and stable walking pattern for the biped robot is obtained, as proved by the experiments.

Construction of a Gait Analysis System for Evaluating Gait Abnormalities (보행 비정상성의 평가를 위한 보행분석 시스템의 구현)

  • Chung, Min-Keun;Kim, Sang-Ho;Kim, Tae-Bok
    • Journal of Korean Institute of Industrial Engineers
    • /
    • v.17 no.2
    • /
    • pp.39-50
    • /
    • 1991
  • The movement of human beings - walking, running, jumping and climbing, etc. - have long been of scientific interest. In particular, the science of human walking is called gait analysis. Various instruments have been developed to assist in the study of human gait. Recently gait analysis techniques are used in medical research to investigate the abnormalities of pathological gait. In this study, we constructed a comprehensive gait analysis system consisting of a walkway, a force platform, foot-switches and an ExpertVision motion analysis system. Time-distance gait parameters and vector diagrams can be analyzed by a special application program called Force Analysis System(FOANAS). Using quantitative discrimination of this system, the gait characteristic parameters of normal and pathological gait is facilitated.

  • PDF

Feature Space Analysis of Human Gait Dynamics in Single View Video

  • Sin, Bong-Kee;Kwon, Ki-Ryong
    • Journal of Korea Multimedia Society
    • /
    • v.13 no.12
    • /
    • pp.1778-1785
    • /
    • 2010
  • This paper proposes a new video-based method of analyzing human gait which is a highly variable dynamic process. It captures a human gait of varying directions as a trajectory in the phase space. The proposed method includes two options of a stochastic process model and a self-organizing feature map as the tool of feature space representation and analysis. Test results show that the model is highly intuitive and we believe it can contribute to our understanding of human activity as well as gait behavior.

Biped robot gait pattern generation using frequency feature of human's gait torque analysis (인간의 보행 회전력의 주파수 특징 분석을 이용한 이족로봇의 적응적 보행 패턴 생성)

  • Ha, Seung-Suk;Han, Young-Joon;Hahn, Hern-Soo
    • Journal of the Korean Institute of Intelligent Systems
    • /
    • v.18 no.1
    • /
    • pp.100-108
    • /
    • 2008
  • This paper proposes a method of adaptively generating a gait pattern of biped robot. The gait synthesis is based on human's gait pattern analysis. The proposed method can easily be applied to generate the natural and stable gait pattern of any biped robot. To analyze the human's gait pattern, sequential images of the human's gait on the sagittal plane are acquired from which the gait control values are extracted. The gait pattern of biped robot on the sagittal plane is adaptively generated by a genetic algorithm using the human's gait control values. However, galt trajectories of the biped robot on the sagittal Plane are not enough to construct the complete gait pattern because the bided robot moves on 3-dimension space. Therefore, the gait pattern on the frontal plane, generated from Zero Moment Point (ZMP), is added to the gait one acquired on the sagittal plane. Consequently, the natural and stable walking pattern for the biped robot is obtained.

Fabrication of shoes for analyzing human gait pattern using strain sensors (스트레인센서를 이용한 걸음걸이 패턴 분석 신발제작)

  • Kim, Eung-Soo
    • The Journal of the Korea institute of electronic communication sciences
    • /
    • v.8 no.9
    • /
    • pp.1407-1412
    • /
    • 2013
  • The human gait pattern analysis shoes have been developed for our healthy lfe, which is largely dependent on a posture and a skeletal structure affected by daily lifestyle and gait pattern. There are generally 3 types of human gait, such as normal gait, intoeing gait, and outtoeing gait. We have analyzed one's gait pattern through walking put on the developed shoes.

A Study on the Gait Test Human Dynamic Simulation Using Gait Motion Capture and Foot Pressure Measurement : Analysis of Gait Pattern with Wearing Military Equipment of Korean Male Adult (Gait Motion Capture 및 족압 측정을 이용한 보행특성시험 및 동력학적 인체 시뮬레이션 연구 : 한국인 성인 남자의 군장착용 보행 특성 해석)

  • Lee S.H.;Lee Y.S.;Choi Y.J.;Lee J.W.;Chae J.W.;Choi E.J.;Kim I.W.
    • Proceedings of the Korean Society of Precision Engineering Conference
    • /
    • /
    • pp.877-880
    • /
    • 2005
  • This paper suggests gait analysis and gait simulation method using Gait Motion Capture equipment and plantar pressure measurement system. The gait of normal person and how it will be effected by added weight with wearing military equipments are studied by suggested method. It is measured that a change of gait pattern when wears military equipments with Korean male adult(height 180 cm, weight 70 kg) and simulated its results.

  • PDF

Dynamic Bayesian Network-Based Gait Analysis (동적 베이스망 기반의 걸음걸이 분석)

  • Kim, Chan-Young;Sin, Bong-Kee
    • Journal of KIISE:Software and Applications
    • /
    • v.37 no.5
    • /
    • pp.354-362
    • /
    • 2010
  • This paper proposes a new method for a hierarchical analysis of human gait by dividing the motion into gait direction and gait posture using the tool of dynamic Bayesian network. Based on Factorial HMM (FHMM), which is a type of DBN, we design the Gait Motion Decoder (GMD) in a circular architecture of state space, which fits nicely to human walking behavior. Most previous studies focused on human identification and were limited in certain viewing angles and forwent modeling of the walking action. But this work makes an explicit and separate modeling of pedestrian pose and posture to recognize gait direction and detect orientation change. Experimental results showed 96.5% in pose identification. The work is among the first efforts to analyze gait motions into gait pose and gait posture, and it could be applied to a broad class of human activities in a number of situations.

Analysis of human gait using inverse kinematics (역기구학을 이용한 보행 분석)

  • 최경암;정민근;염영일
    • Journal of the Ergonomics Society of Korea
    • /
    • v.13 no.1
    • /
    • pp.3-14
    • /
    • 1994
  • In this study, the human gait trajectories during normal walking were synthesized using the inverse kinematics and optimization techniques. The synthesis is based on a gait model consisting of a torso and two legs. Each let has three segments: thigh, shank, foot, and has six degrees-of-freedom. In order to synthesize trajectories of this redundant system, the sum of angular displacements of articulating joints was selected as an objective function to be minimized. The proposed algorithm in this study is very useful for the analysis of human gait. For the gait analysis, the trajectories of four points in each leg should be measured. Hpwever, by using the algorithm, measuring the trajectories of two points is sufficient, and thus the experimental set-up can be simplified.

  • PDF

A Study of Gait and Gait Analysis Techniques (보행과 보행분석법에 관한 연구)

  • Bae Sung-Soo;Lee Jin-Hee;Yoon Chang-Goo
    • The Journal of Korean Physical Therapy
    • /
    • v.8 no.1
    • /
    • pp.49-64
    • /
    • 1996
  • The technology of gait analysis is moving rapidly. Human gait is very complex, and a through understanding of it demands with the basic principles of biomechanics and the technology used to measure gait. Some professionals reluctance to use gait analysis may be due to the amount of time and effort necessary to accomplish this and the necessity for teamwork among the disciplines involved. Any form of observational gait analysis has limited precision and is more descriptive than quantative. The techniques of 3-D kinetic and kinematic analysis can provide a detailed biomechanical description of normal and pathological gait. This article review gait characteristics and procedures that are available for gait analysis. We are certain that, given the steady advance of technology and our continued efforts to document the benefits of that technology. gait analysis will soon be a routine part of the evaluation of both the elite athlete and the physically impaired adult or child.

  • PDF