In this paper we propose an easy algorithm for real time hand finger counting involving one or more than one hand. Hand finger counting is a simple medium for Human-Computer Interface which can prove to be a convenient input method for driving interactive menus, small applications and interactive games. Here, we also calculate the orientation of the hand which can be used to provide inputs for ...

This paper investigates the employment of Artificial Neural Networks (ANN) for a multi-finger robot hand manipulation in which the object motion is defined in task-space with respect to six Cartesian based coordinates. The approach followed here is to let an ANN learn the nonlinear functional relating the entire hand joints positions and displacements to object displacement. This is done by con...

This paper presents a proposal for a twelve degrees of freedom robotic hand system controlled via haptic technology with force control and force feedback. This robotic hand can be used in hazardous environment, deserted places, or aerospace. To achieve this goal, an experimental set up in addition to a computer simulation of this robotic hand system have been carefully designed and built. The e...

© 2007 Association médicale canadienne T surgeon’s knot is a well-established knot in surgical practice, known to provide unsurpassed grip and security for the tissue tied. It is particularly useful with slippery monofilament suture materials. Traditional tying of the surgeon’s knot involves a cumbersome technique of repeating throws to complete the double loops of each hitch. We describe a 2-h...

Contact interactions between the hand and handle, such as the contact surface softness and contact surface curvature, will affect both physical effort and musculoskeletal fatigue, thereby the comfort and safety of power tool operations. Previous models of hand gripping can be categorized into two groups: multi-body dynamic models and finite element (FE) models. The goal of the current study is ...

Several recent studies have suggested that the dominant (D) and non-dominant (ND) hands have different specialization with respect to trajectory and endpoint location control (Sainburg 2002; Sainburg & Schaeffer 2004). In particular, the D hand is assumed to have a better interaction torque compensation. We hypothesize that the control mechanisms for the D and ND hands may differ in their more ...

This research presents a multi-fingered hand and computer control system intended for research in dextrous manipulation. The hand mechanism is based on an anthropomorphic configuration with four identical fingers. Each finger has four degrees of freedom actuated by four dc servomotors. The fingers, palm, and mechanical interface to a robotic arm are separate components of a modular design allow...

In this paper, a mechanical model for an underactuated multi-finger grasping device is presented. The device has single-tendon, three-phalanx fingers, all moved by only one actuator. By means of the model, both the kinematic and dynamical behaviour of the finger itself can be studied. The finger is part of a more complex mechanical system that consists of a four-finger grasping device for robot...