
[B2-E4a] Traitement d'image / Revision 1
Authored by Sébastien Ménigot
Science
University
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9 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
On veut segmenter la couronne de ce coronavirus. Quel canal choisir ?
Luminance Y
Chrominance bleue (Cb)
Chrominance rouge (Cr)
Aucun canal ne permet de segmenter
2.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
Quel seuil de segmentation choisissez-vous ?
environ 100
environ 120
environ 130
environ 140
3.
MULTIPLE CHOICE QUESTION
1 min • 3 pts
Calculer la valeur pixel entouré en rouge par un filtre moyenneur 3x3
environ 90
environ 80
environ 95
environ 85
4.
MULTIPLE CHOICE QUESTION
1 min • 3 pts
Calculer la valeur pixel entouré en rouge par un filtre moyenneur 3x3
environ 90
environ 80
environ 95
environ 85
5.
MULTIPLE CHOICE QUESTION
1 min • 3 pts
Calculer la valeur pixel entouré en rouge par un filtre median 3x3
30
100
150
200
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
À partir de (b), nous souhaitons maintenant séparer les pièces du reste de l’image. Quelle procédure est nécessaire ?
Binariser l’image avec une valeur de 170
Binariser l’image avec une valeur de 225
Appliquer un filtre passe-haut
Appliquer un filtre passe-bas
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Quel filtre a été appliqué sur l’image a pour donner l’image b ?
Filtre moyenneur
Filtre médian
Filtre passe-haut
Filtre passe-bande
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