数字图像处理技术在TWaver可视化中的应用

首先我们重写一个网元CNode，定制用来处理图像的特殊网元。

public class CNode extends Node{
public function CNode(id:Object = null){
super(id);
}
override public function get elementUIClass():Class{
return CNodeUI;
}
}

public class CNodeUI extends NodeUI{
private var currentImageAsset:IImageAsset = null;
private var currentComponent:DisplayObject = null;
public function CNodeUI(network:Network, node:Node){
super(network,node);
}
override protected function drawDefaultContent(graphics:Graphics):void{
//此处处理图像，并绘制图像
}
}

private function doBinary(bd:BitmapData):BitmapData {
var rect:Rectangle = bd.rect;
for(var i:int=rect.x; i<rect.x+rect.width;i++) {
for(var j:int=rect.y; j<rect.y+rect.height;j++) {
var color:uint = bd.getPixel(i,j);
if(color>0x605555){
bd.setPixel(i,j,0xffffff);
}else{
bd.setPixel(i,j,0x00000);
}
}
}
return bd;
}

private function doGray(bd:BitmapData):BitmapData {
var rect:Rectangle = bd.rect;
for(var i:int=rect.x; i for(var j:int=rect.y; j var color = bd.getPixel(i,j);
var rgb:Array = ColorUtils.CombinationToRGB(color);
var gray = (int)(rgb[0] * 0.299 + rgb[1] * 0.587 + rgb[2] * 0.114);
bd.setPixel(i,j,ColorUtils.RGBToCombination([gray,gray,gray]));
}
}
return bd;
}

3.图像旋转

private function doRotate(bd:BitmapData):BitmapData{
var rect:Rectangle = bd.rect;
var m:Matrix = new Matrix();
m.rotate(Math.PI/3);
m.translate(rect.height,0);
var bmp:BitmapData = new BitmapData(bd.height, bd.width,false);
bmp.draw(bd,m);
return bmp;
}

数字图像处理技术在TWaver可视化中的应用

原文：http://blog.csdn.net/twaver/article/details/45074831