User Guide

GNU Image Manipulation Program
111 / 653
Figure 8.17: Example for layer mode ‘Soft light’
(a) Mask 1 is used as upper layer with 100% opac-
ity.
(b) Mask 2 is used as upper layer with 100% opac-
ity.
Soft light is not related to ‘Hard light’ in anything but the name, but it does tend to make the edges softer and the colors not
so bright. It is similar to ‘Overlay’ mode. In some versions of GIMP, ‘Overlay’ mode and ‘Soft light’ mode are identical.
The equation is complicated. It needs Rs, the result of Screen mode :
R
s
=
255−((255−I)∗(255−M))
256
EQUATION 8.11: Equation for layer mode Screen
E =
((255−I)∗M∗I)+(I∗R
s
)
255
EQUATION 8.12: Equation for layer mode Soft light
Grain extract
Figure 8.18: Example for layer mode ‘Grain extract’
(a) Mask 1 is used as upper layer with 100% opac-
ity.
(b) Mask 2 is used as upper layer with 100% opac-
ity.
Grain extract mode is supposed to extract the ‘film grain’ from a layer to produce a new layer that is pure grain, but it can