2011

Original matte
Alpha remapped
Alpha inverted
An invert button provides inversion of the alpha after the curve mapping.
This tool affects alpha only; the RGB channels, if present, are passed through
unchanged. The pixel format of the output is the same as the pixel format of
the image input. If the image has no alpha, then the output will have an alpha
channel, properly modified by the curve remapping.
For more detailed curve manipulation, control points can be added to, or
deleted from the curve.
To add a control point to the curve:
➤ With the cursor in the curve window, press + (plus sign) to enter a mode
where each click on the curve creates a control vertex at that location.
To delete a control point from the curve:
➤ With the cursor in the curve window, press - to enter a mode where each
click on a control vertex deletes the control vertex at that location.
Remap Alpha | 359