Remember Edge Matte need alpha.. Created in nuke 8.0 (window) Any bug please let me know.
Create a quick mask for your rim light using the matrix node
pull the rgb edges of an image outwards based on it's a control channel.
Simple edge generation tool based on dilating and eroding the alpha channel
makes edges from the alpha.
Grow or shrink the edge of your image using edge pixels, with the option to hold out your new image with the original alpha. Helpful for getting rid of halo'd edges from keys, as well as refining edge-integration with the aid of gizmos such as MagicMerge.
Tool which produces noise to roughen up the edges of a perfect mask. Works well on hard masks.
EdgeScatter blends an image along a matte edge, typically mixing 2 layers from completely different sources (a greenscreen and a BG for example) for a more photographically correct look.
Adds a smooth glow over the edge using just alpha channel.
common mask operations (shrink, grow, erode, glow, edgedetect) in one handy tool.