You can adjust the image brightness and color in particular.
[Color] or [Grayscale] is selected for [Color Mode]:
[Black and White] is selected for [Color Mode]:
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If you adjust the image in Color Adjustment, the result is immediately reflected in the preview image. |
[Brightness/Contrast]
Adjust the brightness or contrast. Use this if the document is too dark or bright or too flat due to low contrast.
For the color document, select [Red], [Green], or [Blue] in [Channel] to adjust each color element separately or select [Master] to adjust three composite color elements.
If you select [Grayscale] for [Color Mode], only [Grayscale] is available in [Channel].
Move the slider for [Brightness] left or right to darken or brighten the image, respectively. You can also specify a value (-127 to 127) by inputting it directly.
Move the slider for [Contrast] left or right to decrease or increase the contrast, respectively. You can also specify a value (-127 to 127) by inputting it directly.
Click [Defaults] to return to the default condition.
[Histogram]
The histogram shows how much data is concentrated at each tone level. Use this function if you specify and cut the brightest level (highlight) and the darkest level (shadow) from the image to expand the halftone.
For the color document, select [Red], [Green], or [Blue] in [Channel] to adjust each color element separately or select [Master] to adjust three composite color elements.
If you select [Grayscale] for [Color Mode], only [Grayscale] is available in [Channel].
Click
(shadow level) on the left and click the point that you want specified as the darkest tone level in the preview image. You can also specify the darkest tone level by entering a value.
Click
(halftone level) in the middle and click the point that you want specified as the halftone between black and white in the preview image. You can also specify the halftone level by entering a value.
Click
(highlight level) on the right and click the point that you want specified as the brightest tone level in the preview image. You can also specify the brightest tone level by entering a value.
For the color image, click
on [Gray Balance] and click the point on which you want to adjust the gray balance on the preview image. If you adjust the gray balance again, click this button once more. In the gray balance adjustment, the clicked point becomes an achromatic color and the whole image is adjusted according to it. It is effective on, for example, the bluish snow image.
Drag the triangles under the histogram to the appropriate levels.
The portion at the left of
(the area darker than the value specified as the shadow level) is blackened.
The color at
(the point specified as the halftone level) is the color exactly halfway between the shadow level and the highlight level.
The portion at the right of
(the area brighter than the value specified as the highlight level) is whitened.
Click [Defaults] to return to the default condition.
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Click on the [Histogram] dialog if you want to deselect |
[Tone Curve Settings]
Select a graph (tone curve) which shows the tone input and output balance to adjust the brightness of the image. You can finely adjust the brightness at the certain range.
For the color document, select [Red], [Green], or [Blue] in [Channel] to adjust each color element separately or select [Master] to adjust three composite color elements.
If you select [Grayscale] for [Color Mode], only [Grayscale] is available in [Channel].
Select a tone curve in [Select Tone Curve].
Click [Defaults] to return to the default condition.
[Final Review]
You can check the final color adjustment. The final composite tone curve and the histogram obtained from subsequent image processing are displayed.
For the color document, select [Red], [Green], or [Blue] in [Channel] to review each color element separately or select [Master] to review three composite color elements.
If you select [Grayscale] for [Color Mode], only [Grayscale] is available in [Channel].
[Threshold]
For color or grayscale image, the brightness is represented with a value between 0 to 255. For black and white image, the halftone color is also split into black and white. The cutoff between black and white is called threshold.
By adjusting the threshold level, you can emphasize the characters on the text document or reduce the back scan of a document such as a newspaper.
If you drag the slider to the right and increase the threshold value, the whitened part is decreased (the blackened part is increased). Similarly if you drag it to the left and decrease the value, the whitened part is increased (the blackened part is decreased). You can also specify a value (0 to 255) directly.
Click [Defaults] to return to the default condition.
[Defaults]
Click [Defaults] to return all color settings to the default condition.