Dilate/Erode Node

../../../_images/compositing_nodes_filter_dilate-erode.png

Dilate/Erode Node.

This node provides a morphology (mathematical shape analysis) filter.

Inputs

Mask
Single color channel (or a black and white image) input.

Properties

Mode
Step, Threshold, Distance, Feather
Distance
The Distance is the filter radius. A positive value of Distance dilate (expands) the influence of a pixel on its surrounding pixels. A negative value erodes (shrinks) its influence.

Outputs

Mask
The filtered mask output.

Example

In this example image, we wanted to take the rather boring array of ball bearings and spruce it up; make it hot, baby. So, we dilated the red and eroded the green, leaving the blue alone. If we had dilated both red and green... (hint: red and green make yellow). The amount of influence is increased by increasing the Distance values. Blend file available here..

../../../_images/compositing_nodes-dilate_ex.jpg