Automatisation de l'Acquisition et des Post-traitements en Numérisation 3D

Abstract : The automation of digitalisation is an indispensable step in the development of 3D measuring, in various fields :
- in industry, to accelerate the procedures for control of parts,
- in archaeology and biology, for the study of collections of several hundreds even thousand objects (for which the acquisition is for the moment impossible because of necessary time, and thus of the cost). In this thesis, we explain first the various existing systems of acquisition and positioning, by detailing the advantages and the inconveniences of every system. We present then the developed methodology to guide the operator in these choices as well as the tool set up to formalize this methodology. Then we will study the necessity of the automation of the 3D digitalization by illustrating the limits and the constraints of the solutions in place at present. Some examples of application of the methodology are described through various case studies, highlighting the time of intervention of the operator. Then, existing methods for automating the acquisition are described, explaining their limits. Two methods are proposed : the first defines a off-line viewplanning from a reference model while the second calculates the next best position without any a priori information on the object. Both methods allow the complete digitalization of an object without intervention of an operator. To test these methods, a simulation environment and a prototype have been developed. Finally, the results are presented and compared to a manual digitalization.
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https://tel.archives-ouvertes.fr/tel-00371269
Contributor : Benjamin Loriot <>
Submitted on : Friday, March 27, 2009 - 10:49:13 AM
Last modification on : Saturday, July 14, 2018 - 1:06:24 AM
Long-term archiving on : Thursday, June 10, 2010 - 6:56:07 PM

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  • HAL Id : tel-00371269, version 1

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Benjamin Loriot. Automatisation de l'Acquisition et des Post-traitements en Numérisation 3D. Autre [cs.OH]. Université de Bourgogne, 2009. Français. ⟨tel-00371269⟩

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