Edge Extend

Brief Description

Extend the edges of a matte, leaving RGB channels intact. If the input matte comes from a keyer, the alpha channel of the matte should be first eroded by a small amount to remove pixels containing mixed foreground/background colors. If not, these mixed colors may be extended instead of the pure foreground colors. The filling process works by iteratively blurring the image, and blending the non-blurred image over the blurred-image to get to the next iteration. The blur size at each iteration is linearly increasing.

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	Size of the largest blur used to extend the edge
Slices / slices	Float	5	Number of blur filter steps to apply
Bounding Box / rod_mode	Choice	Expand	- Expand - Crop to format - Same as input
Filter / filter	Choice	Gaussian	- Gaussian - Box - Triangle - Quadratic
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