May 2020
Intermediate to advanced
576 pages
26h 55m
French
Content preview from Deep Learning avec Keras et TensorFlow
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252
Chapitre 6. Vision par ordinateur et réseaux de neurones convolutifs
6.9 DÉTECTION D’OBJETS
L’opération de classication et de localisation de multiples objets dans une image
se nomme détection d’objets. Il y a quelques années encore, une approche répandue
consistait à prendre un CNN qui avait été entraîné pour classier et localiser un seul
objet, puis à le déplacer sur l’image (voir la gure6.24). Dans notre exemple, l’image
est découpée en une grille 6×8, et le CNN (le rectangle noir au contour épais) est
déplacé sur des zones 3×3. Lorsque le CNN fait sa recherche dans l’angle supérieur
gauche de l’image, il détecte une partie de la rose ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.