Safety issues are of prime importance in using robots in some sensitive applications. We classify the possible incidents and the partial solutions that exist in various robotic elds. We particularly detail two applications of interest : the guiding of a medical intervention and the inspection of a steam boiler in a power plant. We aim at checking, in a global way, the correct accomplishment of ...

This paper describes a calibration method for determining the physical location of the ultrasound (US) image plane relative to a rigidly attached 3D position sensor. A calibrated US probe can measure the 3D spatial location of anatomic structures relative to a global coordinate system. The calibration is performed by aiming the US probe at a calibration target containing a known point (1 mm dia...

Accurate estimation of the axial position of a molecule using a single lateral image remains a challenge in fluorescent single particle tracking. Here, a principled algorithm for the Bayesian estimation of the axial position of a molecule in three-dimensional astigmatism-based particle tracking is proposed. This technique uses the data from a calibration image set to derive the position without...

Camera calibration is a necessary and critical step in 3D object analysis. The accuracy of calibration results will affect the object’s position in world coordinates, especially for 3D object tracking. In this paper, we present a new camera calibration approach, and discuss its accuracy. We use 3D marks instead of 2D marks for calibration. Our experimental results show that our approach has the...

Introduction: The position estimation in gamma detection system will have constant misplacements which can be corrected in the calibration procedure. In the pixelated crystal uniformly irradiation of detector will produce irregular shape due to position estimation errors. This image is called flood field image and is used to calibrate the position estimation. In this work we pr...

In this paper, authors proposed a practical motion estimation strategy to obtain the single static object position and the vehicle’s motion parameters simultaneously by utilizing camera and IMU (Inertial Measurement Unit), and tried several classic nonlinear parameters estimation methods on this problem based on the Matlab simulation. A lot of preliminary calibration experiments have been done ...

The acoustical impedance of a component is one of its most important characteristics. It is needed when acoustical simulations using lumped elements or electrical analog circuits are carried out. The calibration procedure for the two microphone transfer function method described in ISO 10534-2 is not sufficiently accurate in most cases. In this paper, a new calibration method for the two microp...