Universe

COMPOUND BLUR

A tool that blurs pixels based on the luminance values of another layer.
Note: Compound Blur is not supported in Avid Media Composer.

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Getting Started in a timeline        

 

1. Add video layers in the timeline for the blur luminance source and the image to be blurred.
2. Apply uni.Compound Blur on the layer you want to be distorted.
3. Use Blur Layer to choose the video layer that you want to guide the luminance blur.

Getting Started in a compositor    

1. Apply uni.Compound Blur on the layer you want to be distorted.
2. Use Blur Layer to choose the video layer that you want to guide the luminance blur.

Modify the Effect

• Adjust the Maximum Blur Size control to increase the intensity and influence of the Blur from the center point.
• Blur Channel(s): Select from the Channel(s) drop-down menu which channel in your image you'd like the blur to affect. Your choices are:
  •  RGB (this will select all the color channels), or isolate the blur by choosing from the Red, Green, or Blue options
  • The Alpha option will allow the blur to just affect the alpha channel of your image.
  • The HSL option affects all the Hue, Saturation and Lightness in the image, or isolate just one of these by choosing Hue, Saturation, or Lightness.
• The Mask Controls control group will help you isolate the Compound blur to a specific area within the layer.
  • Soften Mask will add a blur to the edges of the mask.
  • To utilize just one aspect of that chosen layer, use the Mask Channel drop-down to choose from the Luma, Red, Green, Blue, or Alpha channels of your selected layer.
  • Check on the Show Mask box to see the areas within the layer your mask is affecting.
  • Invert: when checked on this will switch the blur to occur outside the selected mask shape instead of inside. The default is off.
  • The Mask Scale will scale your mask up or down in the range from 0-800% across the image.
  • Mask Position allows you to move the position of the mask along the X and Y axis using the cross-hair or numerical controls.
• The Quality control will spread the gradient of the blur more evenly across the image, blending the edges and colors together the higher it is set.
• Turning on the Apply Linear check box will convert the gamma from standard video gamma (Rec 709 assumed) to linear gamma (1.0). This results in less smearing of blacks and highlights tend to be preserved.
• Chose from the Blend Mode drop-down to select the blending mode used to composite the blurred result over the original input image.
• The Opacity Slider makes the effect more subtle and transparent over the original image.