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Initiation à EPSON TWAIN Pro 2-11
Expression 1600 Scanner
Software Reference Guide
Rev. C
A5 size FR Chap2.fm
12/3/99 Pass 3
R
Proof Sign-off:
M.Fujimori
leadername
editorname
Options N/B
Paramètres disponibles :
TET (Text Enhancement Technology)
,
AAS (Segmentation
automatique de zone)
ou
Aucun
.
TET (Text Enhancement Technology) :
Ce paramètre permet d'améliorer le taux de reconnaissance d'une
numérisation OCR. Cette fonction élimine l'arrière-plan du
document numérisé.
AAS (Segmentation automatique des Zones)
Ce paramètre permet d'éclaircir les images en niveaux de gris et
d'améliorer le taux de reconnaissance d'une numérisation OCR.
Cette fonction sépare le texte des graphiques.
Note :
L'option N/B ne peut être paramétrée que si le paramètre
Noir
& Blanc
de l’option Echantillonnage a été sélectionné.
Si vous ne souhaitez pas utiliser les fonctions TET ou AAS,
sélectionnez
Aucun
.
Le paramètre
Aucun
est sélectionné par défaut.
Cliquez sur
OK pour appliquer les paramètres que vous avez définis.
La fenêtre Aperçu vous permet de visualiser les effets des
paramètres définis, à l'exception toutefois des paramètres
TET (Text
Enhancement Technology) et
AAS (Auto Area Segmentation).
Demi-ton
Sélectionnez un paramètre de demi-ton ou de tramage pour
reproduire une image à l'aide de motifs de points spécifiques :
Mode A (Ton dur), Mode B (Ton doux), Mode C (Ecran net),
Tramage A (Bayer 4x4), Tramage B (Spirale 4x4)),
T
ramage C
(Ecran net 4x4)
,
Tramage D (Ecran net 8x4) ou Aucun.
50


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