Filters








3 Hits in 4.2 sec

Estimating the 3D orientation of a microgripper by processing the focus data from the images delivered by a videomicroscope

Guillaume Fortier, Brahim Tamadazte, Sounkalo Dembele, Nadine Le Fort-Piat
2008 2008 International Workshop on Robotic and Sensors Environments  
The paper investigates the problem of computing the 3D orientation of a rigid body by analysing the focus data extracted from the images of a videomicroscope.  ...  But the modelling stage is simplified, instead of performing a 3D modelling, a 1D modelling is achieved which enables the estimation of the 3D orientation of the object.  ...  This paper investigates the tracking of rigid bodies in the images delivered by a high magnification videomicroscope, more precisely a solution is proposed for the estimation of the 3D orientation of a  ... 
doi:10.1109/rose.2008.4669181 dblp:conf/rose/FortierTDF08 fatcat:pagnkq56ejgybjrf6lbem27lhu

A multiscale calibration of a photon video microscope for visual servo control: Application to micromanipulation

Brahim Tamadazte, Sounkalo Dembele, Nadine Le Fort-Piat
2008 2008 International Workshop on Robotic and Sensors Environments  
The calibration is performed through a virtual pattern made by tracking a silicon micro part in the images of the scene.  ...  The main image source is the photon videomicroscope whose features are the weakness of the depth-of-field and that of the field-of-view.  ...  The third section states the experimental results obtained with a commercial videomicroscope (MZ16A from Leica) characterized by a motorized zoom and focus.  ... 
doi:10.1109/rose.2008.4669176 dblp:conf/rose/TamadazteDF08 fatcat:qxi7s3pabvb2vetrv7h2eecfgi

CAD Model-based Tracking and 3D Visual-based Control for MEMS Microassembly

B. Tamadazte, E. Marchand, S. Dembélé, N. Le Fort-Piat
2010 The international journal of robotics research  
The 3D poses of the MEMS are supplied in real-time by a computer-aided design (CAD) model-based tracking algorithm.  ...  The different microassembly processes are performed with a mean error of 0.3 µm in position and 0.35×10 −2 rad in orientation. keywords: MEMS, robotic microassembly, micromanipulation, pose-based visual  ...  The authors thank Miss Joanna Farrow, English teacher at ENSMM (National Engineering School of Mechanics and Microtechnics) of Besançon for these multiple proof-reading of this paper.  ... 
doi:10.1177/0278364910376033 fatcat:vdrjw646xvdd3l3bhucbz43yya