Exponential Blur

Brief Description

The Bloom filter sums multiple blur filters of different size, resulting in a larger but sharper glare than a simple blur. It is similar to applying "Count" separate Blur modifieers to the same input image with sizes 'Size', 'Size''Ratio', 'Size''Ratio'^2, etc., and averaging the results.

Controls

Parameter / Script Name	Type	Default	Function
Enabled / enabled	Boolean	On
Red / process_red	Boolean	On	Enable the red channel in output. Otherwise if there's a source the content of the main source is returned instead, else 0
Green / process_green	Boolean	On	Enable the green channel in output. Otherwise if there's a source the content of the main source is returned instead, else 0
Blue / process_blue	Boolean	On	Enable the blue channel in output. Otherwise if there's a source the content of the main source is returned instead, else 0
Alpha / process_alpha	Boolean	On	Enable the alpha channel in output. Otherwise if there's a source the content of the main source is returned instead, else 0
Size / size	Float 2D	0, 0	Maximum blur size applied. Higher values extend the edges of thhe mask further.
Count / Count	Float	5	Number of blur kernels of the bloom filter. Higher values give a wider tail. A count of 1 is just the original blur.
Ratio / ratio	Float	2	Ratio between successive kernel sizes of the bloom filter. A ratio of 1 gives no Bloom effect, just the original blur.
Bounding Box / rod_mode	Choice	Expand	- Expand - Crop to format - Same as input
Filter / filter	Choice	Gaussian	- Gaussian - Box - Triangle - Quadratic
Border / border	Choice	Repeat RGB Black Alpha	- Repeat - Black - Repeat RGB Black Alpha
Crop To Composition Format / crop_source_to_comp	Boolean	On	Useful to increase performances when doing large blurs of the size of the composition if you don't care that the intensities outside the comp get properly blurred.
Downscale Threshold / downscale_threshold	Float	15	When the size of the blur exceeds this threshold, the image is downscaled before blurring and upscale in output, which approximates what the blur would do a much faster speed. Increasing this value increases quality at the cost of processing speed.
Mask / mask	Image	-
Mix / mix_with_source	Float	1	Dissolves between the original image at 0 and the image with the effect applied at 1