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FiltrageMSICvSeptemb.. - Aymeric Histace

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4. Filtres dérivateurs<br />

n<br />

Rehaussement de contraste<br />

q<br />

Lopération de rehaussement de contraste à base de<br />

filtre dérivateur sobtient de la manière suivante :<br />

R f<br />

( i,<br />

j)<br />

= f ( i,<br />

j)<br />

−γ<br />

. Δf<br />

( i,<br />

j)<br />

q<br />

En soustrayant le Laplacien à l'image originale, on<br />

augmente le contraste.<br />

<strong>Aymeric</strong> <strong>Histace</strong><br />

59<br />

4. Filtres dérivateurs<br />

n<br />

Rehaussement de contraste<br />

<strong>Aymeric</strong> <strong>Histace</strong><br />

60<br />

30

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