Epson Perfection V39II User Manual page 43

Scanning
>
Advanced Scanning
Tone Correction Tab
You can use the tone curve to adjust the brightness and contrast of the image.
Tone Correction
Channel
Preset
Histogram Adjustment Tab
You can use the histogram to adjust the brightness of the image.
Histogram
>
Image Adjustment Features for Photo Mode
Note:
You can change the measurement range for the eyedropper by clicking the
(Configuration) button, and then selecting Configuration > Preview > Eyedropper Sampling
Area.
By adjusting the shape of the tone curve, you can adjust the brightness and contrast of
the image.
You can add up to 16 points along the line of the tone curve to control the shape.
You can remove unnecessary points by dragging the line outside the graph for the tone
curve.
Select the color (RGB) to be adjusted using the tone curve.
Standard tone curves have already been registered. We recommend fine-tuning the tone
curve after selecting an item that best suits your needs.
When selecting Linear, the tone curve becomes a straight line (density is not corrected).
While checking the histogram (a graph that indicates light and shade) of the image, you
can adjust the brightness (shadow for the darkest parts, gamma for the medium light
and shade parts, and highlight for the lightest parts) of the image.
Adjust using one of the following methods.
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