Pose-and-Twist Estimation of a Rigid Body Using Accelerometers
نویسندگان
چکیده
An algorithm for estimating the pose and twist of a rigid body using measurements made by a redundant number of on-board accelerometers is formulated. Redundancy helps reduce the e ect of the accelerometer noise. This algorithm is based only on rigid-body kinematics because it is intended to be used for rigid bodies acted upon by forces and moments elusive to modelling. Procedures are developed to calculate the angular velocity and acceleration as well as the attitude of the body along with the velocity and position of the centroid of the pickup points, all in the body frame. It is shown that a small installation error can cause the integration results to become unstable. This instability is compensated for by means of a pose-measurement sensor.
منابع مشابه
تخمین چنددوربینی حالت سه بعدی انسان با برازش افکنش مدل اسکلت سه بعدی مفصل دار در تصاویر سایه نما
Automatic capture and analysis of human motion, based on images or video is important issue in computer vision due to the vast number of applications in animation, surveillance, biomechanics, Human Computer Interaction, entertainment and game industry. In these applications, it is clear that 3D human pose estimation is an essential part. Therefore, its accuracy has a great effect on the perform...
متن کاملDrift-free attitude estimation for accelerated rigid bodies
In this paper we study the attitude estimation problem for an accelerated rigid body using gyros and accelerometers. The application in mind is that of a walking robot and particular attention is paid to the large and abrupt changes in accelerations that can be expected in such an environment. We propose a state estimation algorithm that fuses data from rate gyros and accelerometers to give lon...
متن کاملRelative Camera Pose Estimation Method Using Optimization on the Manifold
To solve the problem of relative camera pose estimation, a method using optimization with respect to the manifold is proposed. Firstly from maximum-a-posteriori (MAP) model to nonlinear least squares (NLS) model, the general state estimation model using optimization is derived. Then the camera pose estimation model is applied to the general state estimation model, while the parameterization of ...
متن کاملCamera Pose Estimation in Unknown Environments using a Sequence of Wide-Baseline Monocular Images
In this paper, a feature-based technique for the camera pose estimation in a sequence of wide-baseline images has been proposed. Camera pose estimation is an important issue in many computer vision and robotics applications, such as, augmented reality and visual SLAM. The proposed method can track captured images taken by hand-held camera in room-sized workspaces with maximum scene depth of 3-4...
متن کاملArticulated - pose estimation using brightness - and depth - constancy constraints
This paper explores several approaches for articulated-pose estimation, assuming that video-rate depth information is available, from either stereo cameras or other sensors. We use these depth measurements in the traditional linear brightness constraint equation, as well as in a depth constraint equation. To capture the joint constraints, we combine the brightness and depth constraints with twi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2001