Adjusting Gamma, Saturation, And Color Hue; Adjusting Output Size - Visioneer PaperPort OneTouch Installation Manual

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4. Click Adjust.
The image changes to show your new settings.
If the image is not what you want, click Reset to return the image to its original brightness and
contrast.
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DJUSTING AMMA ATURATION
If you're using the Color Configuration to scan, you can adjust a group of color settings. Gamma controls
the brightness of the midtones of the color, saturation is the strength or purity of a color, and hue is the
color your eyes see as reflected from the image. These color settings are represented by a response curve.
The horizontal axis of the response curve represents the original settings of the image, and the vertical
axis represents new settings. Thus, the curve is a straight line from the lower left to upper right for an
original, unchanged image. To see how the response curve indicates changes, drag the Gamma slider to
left and right.
The figure on the left shows the color options.
To adjust the color settings:
1. From the Channel drop-down menu, choose the individual color (Red, Green, or Blue) that you
want to use as the basis for adjusting the image, or choose All to adjust them together.
2. From the Edit Style drop-down menu, choose the type of color editing that you want to use:
■
Gamma—the response curve changes as you change the gamma setting; you can also change the
saturation and hue settings.
■ Freestyle—you can drag points and sections of the response curve to create interesting and
unusual color effects. Put the pointer on the curve and drag left, right, up or down. The image
changes its colors in response to the new curve. The x and y numbers at the bottom of the
response curve indicate the exact position of the pointer on the curve. The Gamma slider
remains fixed when you use the Freestyle option.
3. Drag the Gamma, Saturation, and Color Hue sliders to the left to decrease the settings or to the
right to increase the settings.
You can also type a number directly into the setting boxes, or click the up and down arrows next to
the boxes.
4. Click Reset to return the settings to their original numbers.
The upper Reset button is for the gamma setting, the lower one is for saturation and hue.
5. To save the settings of a response curve, click Save.
Saving is available for settings created with the Freestyle editing option so you can load and reuse the
exact settings on other images. This is especially helpful for complex Freestyle response curves.
A dialog box appears that lists the names of previously saved settings. Type a name for your new
settings and click OK.
6. To reuse a saved response curve setting, click Load.
A dialog box lists the names of your previously saved settings. Select the one you want and click OK.
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DJUSTING UTPUT IZE
The item you're scanning may not fill the scanner glass. In that case you can preview the item and use the
Auto Trim option to automatically eliminate the unwanted sections of the image.
You can also adjust the output size to scan only specific sections of an image. For example, if you're
scanning a photograph and want to focus on one section, adjusting the output size removes the rest of the
photograph from the final scanned image.
The figure on the left shows the output size options.
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