Eyeon:Manual/Tool Reference/Blur/Soft Glow
From VFXPedia
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Blur Tools |
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Soft Glow |
Soft Glow [SGl] | |
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The Soft Glow tool is similar to the Glow tool but performs additional processing of the image to create a much softer, more natural glow. This tool is perfect for atmospheric haze around planets, skin tones, and simulating dream-like environments. |
Contents |
Controls Tab
Use these buttons to select the method of Blur used in the filter. The selections are described below.
- Soften
- Soften adds a linear glow, which good in most cases.
- Bartlett
- Bartlett adds a softer, subtler glow with a smoother drop off, but may take longer to render than glow's soften.
- Multi-Box
- (Fusion 5.1 and later) Multi-Box uses a box filter layered in multiple passes to approximate a Gaussian shape. With a moderate number of passes (e.g. 4), a high quality blur can be obtained, often faster than the Gaussian filter, and without any ringing.
- Blend
- Blend adds a non-linear glow that is evenly visible in the whites and blacks.
- Hilight
- Hilight adds a glow without creating a halo in the surrounding pixels.
- Solarize
- Solarize adds a glow and solarizes the image.
- Gaussian
- Gaussian adds a soft glow, blurred by the gaussian algorithm. This is the default method.
The filter defaults to operating on R G B and A channels. Selective channel filtering is possible by clicking the checkboxes beside each channel to make them active or inactive.
This is not the same as the RGBA checkboxes found under the common controls. The tool takes these controls into account before it processes, so deselecting a channel will cause the tool to skip that channel when processing, speeding up the rendering of the effect.
In contrast, the channel controls under the common controls tab are applied after the tool has processed.
This control is used to limit the affect of the soft glow. The higher the threshold, the brighter the pixel must be before it is affected by the glow.
The Gain control defines how bright the glow is.
When Lock X/Y is checked, both the horizontal and vertical glow amounts will be locked. Otherwise, separate amounts of glow may be applied to each axis of the image.
Amount determines the size of the glow effect. Larger values expand the size of the glowing highlights of the image.
This is a cloned instance of the Blend slider in the common controls tab. Changes made to this control are simultaneously made to the one in the common controls.
The blend slider mixes the result of the tool with its input, blending back the effect at any value less than 1.0.
These Scale sliders are normally a reveal control labelled Color Scale. They can be used to adjust the amount of glow applied to each color channel individually, thereby tinting the glow.
Glow Pre Mask
The glow tool supports pre-masking using the Glow Pre Mask input on the tool tile. A pre-mask limits the image before applying the glow. The glow is then is combined with the original image. This is different from a regular effect mask that limits the rendered result.
The glow mask allows the glow to extend beyond the borders of the mask, while restricting the source of the glow to only those pixels within the mask.
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