ANR Edge Weathering

Overview

Edge Weathering roughens the silhouette of anything with an alpha: titles, logos, keyed elements, mattes. Edge Breakup bites into the outline with fractal noise, and Alpha Erosion eats into soft, semi-transparent alpha in a blotchy pattern. Solid interiors survive. The node only removes alpha; it never grows the shape or adds colour.

The noise drifts slowly by default (Speed), so the edges crawl as the shot plays. Set Speed to 0 for wear that stays put, or key Evolution yourself.

Inputs

1. Sourcerequired

   The cutout, text or matte to wear down. It needs an alpha: a fully opaque frame has no edge to erode.

2. Maskoptional

   Limits the effect: where its alpha is black, Source passes through unchanged.

Output. The Source with its alpha worn away and its colour reduced to match, premultiplied.

Quick start

1. Add ANR Edge Weathering after your text, logo or cutout, before it is merged over the background.
2. Set Feature Size for the size of the chips and bites, and Edge Breakup for how far they reach into the shape.
3. Raise Detail for rougher, more broken edges.
4. Set Alpha Erosion and Alpha Softness to eat into soft edges.
5. Set Speed to 0 for still wear, or leave it above 0 for edges that crawl.
6. Change Seed or Noise Offset for a different pattern.

The panel

The node's panel as Nuke shows it, with the values of a new node. Click any control to see what it does; tabs and sections work as in Nuke.

All controls

Tips

• Weather a logo before you move or scale it: the noise is fixed to the frame, so wear applied after the move slides across the logo.
• Alpha Erosion works on semi-transparent alpha. On a hard-edged matte it only touches the edge pixels, and Edge Breakup does most of the work.
• Key Edge Breakup up from 0 to make the edges crumble in over time.
• A small Feature Size gives fine, gritty wear like a worn print; a large one takes big bites out of the shape.

Good to know

• The node needs alpha. On a fully opaque plate it only nibbles the frame's border.

Works with

ANR Noise WarpWarps the image with smooth, animated noise: heat haze, underwater wobble, dreamy distortions and liquid transitions.ANR Highlight BandSweeps a soft band of light across a logo, title or image, with extra light on its edges, for logo shines, glints and product reveals.ANR Matte ReliefTurns text, a logo or any matte into a soft, rounded shape lit from one side, like gel, plastic or liquid, filled with the colours of your image.