We present a novel method for learning and tracking the pose of an articulated body by observing only its volumetric reconstruction. We propose a probabilistic technique that utilizes a multi-component Gaussian mixture model to describe the spatial distribution of voxels in a voxel image. Each component describes a segment or rigid body, and the collection of components are kinematically constr...

the goal of this study is to realize a biped humanoid robot as a human motion simulator; where a biped humanoid robot having an ability to mimic various human motions is used for testing welfare apparatuses. In this paper, a humanoid robot, WABIAN-2R, capable of not only human-like walking but also the emulation of disabled persons’ walking is proposed. It has two 6-DOF legs, two 1-passive-DOF ...

This paper describes a new structure of a six-DOF parallel robot. First, a known planar three-DOF double-triangular structure is modified by replacing the stationary triangle with a circle. It increases the work envelope considerably especially when rotational motions are required. The ability for unlimited rotational motion allows extending the structure into six-DOF by using two sets of stati...

Estimating the three-dimensional (3D) pose of real objects using only a single RGB image is an interesting and difficult topic. This study proposes new pipeline to estimate represent object in with 4-DoF annotation matching CAD model. The proposed method retrieves candidates from ShapeNet dataset utilizes pose-constrained 2D renderings find best estimation consists several steps learned network...

Abstract Underground excavation is required for mining engineering and nuclear waste repository. As the progresses, stress increases, brittle failures frequently exist. Brittle are arranged into two types: spalling rock bursting. Spalling in shape of a V-notch may severely damage machine workers involved its development. This potential hazard can be mitigated by fully representing all parameter...

A systematic method is developed for the type synthesis of 4-DOF nonoverconstrained parallel mechanisms with three translations and one rotation inspired by the design of H-4. First, the motion requirements of primary platform and secondary platform of the 4-DOF nonoverconstrained parallel mechanisms are analyzed, and the conflict between the number of actuators and the constraint system for no...

Multibody dynamics of healthy and faulty rolling element bearings were modeled using vector bond graphs. A 33 degree of freedom (DOF) model was constructed for a bearing with nine balls and two rings (11 elements). The developed model can be extended to a rolling element bearing with n elements and 3 n DOF in planar and 6 n DOF in three dimensional motions. The model incorporates the gyroscopic...

Depth of field (DOF) is defined as the distance range within which objects are perceived as sharp. Previous research has focused on blur discrimination in artificial stimuli and natural photographs. The discrimination of DOF, however, has received less attention. Since DOF introduces blur which is related to distance in depth, many levels of blur are simultaneously present. As a consequence, it...

Most of the micro/nano manipulation mechanisms and systems are commonly based on flexure-based monolithic structures, and are generally driven by piezoelectric actuators. In the presented work, experimental system identification, 1-DOF trajectory tracking with feed-forward control, and hysteresis compensation are investigated. An experimental research facility with laser interferometry-based se...

PURPOSE To investigate repositioning accuracy in particle radiotherapy in 6 degrees of freedom (DOF) and intensity-modulated radiotherapy (IMRT, 3 DOF) for two immobilization devices (Scotchcast masks vs thermoplastic head masks) currently in use at our institution for fractionated radiation therapy in head and neck cancer patients. METHODS AND MATERIALS Position verifications in patients tre...