S_GlowDarks
Description
Areas of the image darker than the given threshold are blurred and combined with the image to give a deep smoky look.
The S_GlowDarks filter comes from the Emmy award winning Boris FX Sapphire filter set.
Category
Light.
Controls
Presets
To select a preset, pick one from the Presets window.
Darkness
The magnitude of the dark glows.
Threshold
Dark glows will be generated from locations in the image that are darker than this value. A value of .1 causes glows at only the darkest areas. A value of 1 causes glows on every non-white area.
Glow Saturation
Scales the saturation of the dark colors. Increase for more intense colors.
Glow Width
Scales the glow distance. Note that a 0 glow width still affects the dark areas. Set the darkness parameter to 0 if you want to pass the original image through unchanged.
Width X
Scales the horizontal glow width. Set to 0 for vertical only.
Width Y
Scales the vertical glow width. Set to 0 for horizontal only.
Subpixel
Enables glowing by subpixel widths.
Show
Selects the type of output.
Result
Shows the final result of combining the glow and image.
Darks
Outputs the dark areas of the image which will generate the glow. Colors are inverted, so darks will appear bright and vice versa.
Glow From Alpha
The glow is generated from the alpha channel instead of the RGB channels. In this case, the glow will not use color from the image and will typically be brighter. Values between 0 and 100 interpolate between using the RGB and the alpha.
Glow Under Source
Set to 1 to composite the image over the glows.
Source Opacity
Scales the opacity of the image when combined with the glows. This does not affect the generation of the glows themselves.
Atmosphere
Atmosphere Amp
Atmosphere gives the effect of the glow shining through a dusty atmosphere and picking up light or getting shadowed. This parameter adjusts the amount, or amplitude, of the atmospheric effect. 0 gives a smooth glow, higher values give more dusty look.
Atmosphere Freq
Controls the spatial frequency of the atmospheric noise. Turn this up higher to get finer details, turn down for broader overall variation.
Atmosphere Detail
Controls the amount of fine detail in the atmosphere simulation. Decrease to get smoother atmosphere, increase for a more crunchy or grainy look.
Atmosphere Seed
Used to initialize the random number generator for the atmospheric noise. The actual seed value is not significant, but different seeds produce different results and the same value should give a repeatable result.
Show Glow Width
Enables/disables the on-screen control for adjusting the Glow.