YUV Curve

The YUV Curve filter allows you to correct colors by creating curves showing variation in Y (luminance), U (blue), and V (red).

Setup dialog

In the Y, U, and V tabs, create curves showing variation in Y, U, and V. The horizontal axis shows the level before the change (input level) and the vertical axis shows the level after the change (output level).
Safe Color button:
Click this button, checking it, to limit the luminance of color settings to the safe range.
Default button:
Returns settings to the default values (no color correction).