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Segmentation d'images couleur par un opérateur gradient vectoriel ...

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Chapitre 5<br />

QUANTIFICATION ET MORPHOLOGIE DE<br />

PHASES DE CLINKER PAR ANALYSE D'IMAGE.<br />

1. Introduction......................................................................................................92<br />

2. Article publié dans "WORLD CEMENT"......................................................94<br />

2.1 Introduction................................................................................................................96<br />

2.2 Clinker pre<strong>par</strong>ation ....................................................................................................96<br />

2.3 Imaging system...........................................................................................................97<br />

2.4 Image characteristics..................................................................................................97<br />

2.5 Image analysis.............................................................................................................98<br />

Principe ..........................................................................................................98<br />

Matrix segmentation.....................................................................................98<br />

<strong>Segmentation</strong> of the pores.........................................................................100<br />

Differentiation of alite and belite .............................................................101<br />

User interface ..............................................................................................104<br />

2.6 Experimental results & discussions.......................................................................106<br />

2.7 Conclusions...............................................................................................................107<br />

Acknowledgements..................................................................................................108<br />

3. Améliorations apportées au logiciel "Clinker-Microvision" ......................... 109<br />

3.1 Pré-traitement – normalisation de l'histogramme ...............................................111<br />

3.2 Classification des régions <strong>par</strong> la <strong>couleur</strong>...............................................................111<br />

3.3 <strong>Segmentation</strong> <strong>par</strong> contours actifs...........................................................................112<br />

3.4 <strong>Segmentation</strong> <strong>par</strong> classification de régions...........................................................117<br />

4. Résultats et conclusions ..................................................................................121<br />

91

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