RSS
A little code for a change.
Sakri was working on this, and I ported a class from Java which I believe he adapted into his final implementation. It’s a basic tool for morphing, 3D surface reconstruction, and vectorization.
I’ve cleaned up my version of it and I offer it here. The important function signature looks like this:
public static function perimeter(data:BitmapData, x:int, y:int):Vector.<Point>
It returns a list of pixels representing the boundary between opaque and transparent pixels, starting from a single boundary point that you provide.
You can get a boundary point using Sakri’s and Mario’s EdgeFinder class.
Download the source.
How it works: Marching Squares on Wikipedia
I guess your one is ported from this:
http://www.tomgibara.com/computer-vision/marching-squares
Comment by Eugene — June 29, 2009 @ 4:04 am
Correct, Eugene.
Comment by alan — June 29, 2009 @ 7:39 am