GlowNoiseComp In the S_GlowsComp Plugin. This is similar to GlowNoise, but here the source and background can be different clips. Inputs: Front:  The clip to use as foreground. Back:  The clip to combine the glows with. Matte:  Specifies the opacities of the Front clip. These values are scaled by the Source Opacity parameter before being used.

Parameters:

Width:   Default: 0.5,  Range: 0 or greater.
Scales the glow distance. This and all the width parameters can be adjusted using the Width Widget. Note that a zero glow width still enhances the bright areas; set the brightness parameter to zero if you want to pass the Source through unchanged.

Width Red:   Default: 1,  Range: 0 or greater.
Scales the red glow width. If the red, green, and blue widths are equal, the glows will match the color of the source clip. If they are not equal, the glows will vary in color with distance.

Width Green:   Default: 1.2,  Range: 0 or greater.
Scales the green glow width.

Width Blue:   Default: 1.4,  Range: 0 or greater.
Scales the blue glow width.

Subpixel:   Check-box,  Default: off.
Enables glowing by subpixel widths. Use this for smoother animation of the Width parameters.

Width X:   Default: 1,  Range: 0 or greater.
Scales the horizontal glow width. Set to 0 for vertical only.

Width Y:   Default: 1,  Range: 0 or greater.
Scales the vertical glow width. Set to 0 for horizontal only.

Noise Amplitude:   Default: 1,  Range: 0 or greater.
The amplitude of noise to include in the glows.

Noise Frequency:   Default: 40,  Range: 0.02 or greater.
The spatial frequency of the noise texture. Increase for finer grain, decrease for coarser grain.

Noise Freq Rel Y:   Default: 1,  Range: 0.02 or greater.
The relative vertical frequency of the noise texture. Increase to stretch it horizontally or decrease to stretch it vertically.

Noise Octaves:   Integer,  Default: 1,  Range: 1 to 10.
The number of octaves of noise to include. Each octave is twice the frequency and half the amplitude of the previous.

Brightness:   Default: 2,  Range: 0 or greater.
Scales the brightness of all the glows.

Color:   Default rgb: [1 1 1].
Scales the color of the glows. The colors and brightnesses of the glows are also affected by the Source input.

Threshold Add Color:   Default rgb: [0 0 0].
This can be used to raise the threshold on a specific color and thereby reduce the glows generated on areas of the source clip containing that color.

Threshold:   Default: 0,  Range: 0 or greater.
Glows are generated from locations in the source clip that are brighter than this value. A value of 0.9 causes glows at only the brightest spots. A value of 0 causes glows for every non-black area.

Source Opacity:   Default: 1,  Range: 0 to 1,  Shared.
Scales the opacity of the Source input when combined with the glows. This does not affect the generation of the glows themselves.

Scale Back:   Default: 1,  Range: 0 to 1,  Shared.
Scales the brightness of the background. This parameter only has an effect if the background input is provided, and is visible due to a partially transparent Source image or a reduced Source Opacity parameter value.

Params2:

Glow Under Src:   Default: 0,  Range: 0 to 1,  Shared.
Set to 1 to composite the Source input over the glows.

Glow From Matte:   Default: 0,  Range: 0 to 1,  Shared.
Set to 1 to generate glows from the alpha channel of the source input instead of the RGB channels. In this case the glows will not pick up color from the source and will typically be brighter. Values between 0 and 1 interpolate between using the RGB and the Alpha.

Light Back:   Default: 0,  Range: 0 to 1,  Shared.
Increase this to give a look of the glow casting light onto the background image. To see this more clearly you can also lower the Scale Background parameter or raise the Brightness parameter.

Comp Premult:   Check-box,  Default: off,  Shared.
Enable this for a better composite if the Front pixel values have been pre-multiplied by the Matte pixel values. This is also known as an 'additive' composite.

Show:   Popup menu,  Default: Result.
Selects the type of output

Result:  Shows the final result of combining the glow, source, and background.

Threshold:  Shows the thresholded image that is used to generate the glow.

Combine:   Popup menu,  Default: Screen.
Determines how the glow is combined with the Source or Background. This parameter has no effect if Light BG is set to 1.

Mult:  the source or background is multiplied by the glow.

Add:  the glow is added to the source or background.

Screen:  the glow is blended with the source or background using a screen operation.

Difference:  the result is the difference between the glow and the source or background.

Overlay:  the glow is combined with the source or background using an overlay function.

Noise Shift:   X & Y,   Default: [0 0],  Range: any.
The horizontal and vertical translation of the noise texture. This can only be observed if Jitter Frames is zero.

Noise Seed:   Default: 0.123,  Range: 0 or greater.
Used to initialize the random number generator. The actual seed value is not significant, but different seeds give different results and the same value should give a repeatable result.

Jitter Frames:   Integer,  Default: 1,  Range: 0 or greater.
If this is 0, the noise texture will remain the same for every frame processed. If it is 1, a new noise texture is used for each frame. If it is 2, a new noise texture is used for every other frame, and so on.

Spread Speed:   X & Y,   Default: [0.1 0],  Range: any.
The rate and direction that two noise textures slide over each other. This has no effect unless Jitter Frames is zero.

See Also:

GlowComp GlowDistComp GlowRainbowComp GlowAuraComp GlowRingsComp GlowDarksComp GlowOrthiconComp GlowEdgesComp

GlowNoise GlowNoiseMask GlowNoiseMaskComp

Glint Sapphire Plug-ins Introduction

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