EdgeDetect

A basic edge detection node with options for a blur before the edge detection and an erode after.

Inputs and Controls

Connection Type	Connection Name	Function
Input	unnamed	The image sequence to detect edges in.

Control (UI)	Knob (Scripting)	Default Value	Function
EdgeDetectWrapper Tab
Edge Detector	edgedetector	sobel	Choose an edge detection method: • simple • sobel • prewitt
channels	channels	all	The effect is only applied to these channels. If you set this to something other than all or none, you can use the checkboxes on the right to select individual channels.
Threshold	threshold	0
output	N/A	disabled	Enables the associated mask channel to the right. Disabling this checkbox is the same as setting the channel to none.
output	output	none	Sets the output channel for the edge detect applied.
mask	N/A	disabled	Enables the associated mask channel to the right. Disabling this checkbox is the same as setting the channel to none.
mask	maskedgedetect	none	The channel to use as a mask. By default, the blur is limited to the non-black areas of this channel.
PreBlur/PostErode
Erode size	erodesize	0
Blur size	blursize	0	Lower numbers make the calculations faster but the result might not be as smooth. The image size is scaled down so that the blur filter is no larger than this number, and then scaled up with linear interpolation after filtering.
Blur quality	blurquality	15	Set the blur quality. The lower the number, the faster the calculation.