Adjusting Tone Curve
02-Nov-2007
8100095900
Solution
Tone curve is a graph showing the balance of brightness. Edit tone curve to adjust the image brightness by adjusting the balance of tone input and output. You can make fine adjustments to the brightness of a specific area.
With ScanGear, scanning images via a scanner is the input, and displaying to a monitor is the output. [Tone Curve] shows the balance of tone input and output for each [Channel].
Output Brightness
Input Brightness
Highlight
Shadow
Color tone of the image can be adjusted by changing the shape of [Tone Curve] for each [Channel].
You can drag specific points on the [Tone Curve] or select from the pull-down menu of [Select Tone Curve] to adjust the image.
No adjustment (No Correction)
Convex curve (Overexposure)
Concave curve (Underexposure)
S curve (High contrast)
Downward-sloping line (Reverse the negative/positive image)
The midtone data of the input side is stretched toward the highlight of the output side, resulting in a bright-toned image when viewed on a monitor.
The midtone data of the input side is stretched toward the shadow of the output side, resulting in a dark-toned image when viewed on a monitor.
The highlight and shadow of the input side are enhanced, resulting in a high-contrast image.
The input and output sides are reversed, resulting in a negative-positive inverted image.
