This paper presents a three-dimensional (3D) whole body multi-segment model for inverse dynamics analysis over a complete gait cycle, based only on measured kinematic data. The sequence of inverse dynamics calculations differs significantly from the conventional application of inverse dynamics using force plate data. A new validated "Smooth Transition Assumption" was used to solve the indetermi...

In this article, we present the kinematic calibration of a H4 parallel robot using a vision-based measuring device. Calibration is performed according to the inverse kinematic model method, using first the design model then a model developed for calibration purpose. To do so, the end-effector pose has to be measured with the utterst accuracy. Thus, we first evaluate the practical accuracy of ou...

In this article, we present the kinematic calibration of a H4 parallel robot using a vision-based measuring device. Calibration is performed according to the inverse kinematic model method, using first the design model then a model developed for calibration purpose. With a precision of the order of magnitude of 0.2mm and 0.03◦, our vision system allowed us to obtain a final positioning accuracy...

The lower limb sidestepping kinematics of 20 elite female athletes were calculated using: 1) an established direct kinematic (DK) model (criterion) and, 2) two inverse kinematic (IK) models; one with and one without participant-specific joint co-ordinates prescribed during model preparation. The aim of this research was to determine whether prescribing joint co-ordinates influences the accuracy...

Alphanumeric text entry is a challenge for Virtual Reality (VR) applications. VR enables new capabilities, impossible in the real world, such as an unobstructed view of the keyboard, without occlusion by the user’s physical hands. Several hand representations have been proposed for typing in VR on standard physical keyboards. However, to date, these hand representations have not been compared r...

In this paper, a visual glove based on Conformal Geometric Algebra is proposed. To estimate the motion of hand in an intuitive way, Conformal Geometric Algebra is introduced in that it can describe relationship of objects in 3D Euclidean space geometrically. For measuring human hand joints angles with glove like device, the physiological structure of human hand is analyzed and an inverse kinema...

Computer animation of articulated gures can be tedious largely due to the amount of data which must be speci ed at each frame Animation techniques range from simple interpolation between keyframed gure poses to higher level algorithmic models of speci c movement patterns The former provides the animator with complete control over the movement whereas the latter may provide only limited control ...

this paper describes a simple, physically-based conceptual model utilizing watershed drainage characteristics for rainfall-runoff simulation. this conceptual physiographic model is essentially based on the work of najafi (2003), which has led to a model compris-ing the main tributary subwatersheds and a single main channel subwatershed. the ki-nematic wave (kw) theory is used to describe flow o...

Wireless sensor networks applications are growing and so are their security needs. However, due to severe memory, computing and communication limitations, wireless sensor networks security presents tremendous challenges. Central to any security service, key management is a fundamental cryptographic primitive to provide other security operations. In this paper, we propose IKM, an identity based ...