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3D Gugle
User's Guide
(Colours processing)
With this LAB you can change the single values of
the RGB colours with new values.
The formulation of the new values is determined from a curve that is drawn with
the mouse.
The curve can include all the colours or only one of the three RGB colours.
The purpose of this control is the generation of special graphic effects or to
reduce ghosts.
To activate this control from the menu: "Image",
select "Artist" and then "Colours control".
If the check button "Preview" is selected you can
immediately see the changes.
In this LAB you can also save or recall the saved curves.
To save a curve, use the button "
Looking at the sketch below it is easy to
understand the operative method of this LAB.
The normal values contained in the graphic memory are represented by the Red
line. The values are between zero and 255.
The axle of the normal values is that shown low; the axle of the new values
(those inserted with the mouse) is shown left.
In the case of our example all the values contained in the image with the number
128 are replaced with the new value 190.
Naturally also all the adjacent values, those included in the width of the
curve, will change.
To draw a curve drag the little square with the mouse.