7. The Menus / 7.6 The Tool Menu
7.6.10 Color/Color To Transparency
Color To Transparency creates transparency for an image based on a
predefined color. It also removes this color from semi-transparent areas, so
that the result can be better placed on a different background.
- Simple Calculation
- Simple Calculation is mainly intended for images on a very
homogeneous background, usually white or black. If Filter Saturation is
active, the difference between the saturation of the color and the image
will influence the result.
- Color Similarity
- Color Similarity is used, if the background color has larger differences.
This is the case e.g. with typical greenscreen shots. Hue Tolerance
determines how strong the color tone of the image may deviate from the
set color. In addition, the effect of differences in saturation and in
brightness is adjustable.
The histogram shows the distribution of the calculated transparency. It can
also be used to improve the result.