2007 May

Apollo, Silverlight and JavaFX終於要掀起一場RIA革命了~

下半年之後就看各自的策略如何攻城掠地~

行銷、廣告以及書籍的質與量等…是戰場之一；開發效率、可維護性、可移植性等…這又取決於本身的產品特質~

不過就以「可移植性」這方面來說的話，我想應該比較少人會選擇Silverlight，而投向Apollo或JavaFX的懷抱，然而這兩者的取向又有點不一樣~ 不曉得會不會演變成「鷸蚌相爭，漁翁得利」的情況~

参考网站

切换成「简体中文」：

，，C

也就是可以依照简体字的写法、呒虾米的拆法来输入中文字。

切换成「台式打法」：

，，CT

这样就可以用繁体字的写法，来打出简体字罗~

若要切换回繁体输入：

，，T

便可以再切換回繁體輸入法囉~

可用來將影像模糊化~ Try it!

Blur

import flash.display.BitmapData;
function Blur():Void
{
	var myBitmapData:BitmapData = BitmapData.loadBitmap("brg");
	var height:Number = myBitmapData.height;
	var width:Number = myBitmapData.width;

	var gray:Array = new Array(width);

	for(var i:Number = 0 ; i < width ; i++)
		gray[i] = new Array(height);
		
	var gray2:Array = new Array(width);

	for(var i:Number = 0 ; i < width ; i++)
		gray2[i] = new Array(height);

	//RGB to GRAY
	for(var i:Number = 0 ; i < width ; i++)
	{
		for(var j:Number = 0 ; j < height ; j++)
		{
			var rgb:Number = myBitmapData.getPixel(i,j);
			var r:Number = 0xFF&(rgb >> 16);
			var g:Number = 0xFF&(rgb >> 8);
			var b:Number = 0xFF&rgb;			
			gray[i][j]= 0.299*r + 0.587*g +0.114*b;
		}
	}
	
	for(var x = 1; x < width-1;x++)
	{
		for(var y = 1; y < height-1;y++)
		{
			/**
			 00(a) 10(b) 20(c)
			 01(d) 11(*) 21(e)
			 02(f) 12(g) 22(h)
			*/
			var a = gray[x-1][y-1]*0.1;
			var b = gray[x][y-1]*0.1;
			var c = gray[x+1][y-1]*0.1;
			var d = gray[x-1][y]*0.1;
			var e = gray[x][y]*0.1;
			var f = gray[x+1][y]*0.1;
			var g = gray[x-1][y+1]*0.1;
			var h = gray[x][y+1]*0.1;
			var i = gray[x+1][y+1]*0.1;
			
			var gc = (a+b+c+d+e+f+g+h+i);
			
			gray2[x][y] = 0xff000000  |gc<<16 | gc<<8 | gc;
		}
	}
	
	//set pixel value
	for(var i:Number = 0 ; i < width ; i++)
	{
		for(var j:Number = 0 ; j < height ; j++)
		{
				
			myBitmapData.setPixel(i,j,gray2[i][j]);
		}
	}

	var mc:MovieClip = this.createEmptyMovieClip("mc", this.getNextHighestDepth());
	mc.attachBitmap(myBitmapData,this.getNextHighestDepth());
}
Blur();

這是常見影像處理中的Sobel邊緣偵測法~ 有興趣的人不妨玩玩哦~

相關的演算法細節~ 請參閱Google大神中的Sobel影像處理一節~

Sobel

import flash.display.BitmapData;
function Sobel():Void
{
	var myBitmapData:BitmapData = BitmapData.loadBitmap("bear");
	var height:Number = myBitmapData.height;
	var width:Number = myBitmapData.width;

	var gray:Array = new Array(width);

	for(var i:Number = 0 ; i < width ; i++)
		gray[i] = new Array(height);
		
	var gray2:Array = new Array(width);

	for(var i:Number = 0 ; i < width ; i++)
		gray2[i] = new Array(height);

	var sobscale = 1.0;
	var offsetval = 0;
	// RGB to GRAY
	for(var i:Number = 0 ; i < width ; i++)
	{
		for(var j:Number = 0 ; j < height ; j++)
		{
			var rgb:Number = myBitmapData.getPixel(i,j);
			var r:Number = 0xFF&(rgb >> 16);
			var g:Number = 0xFF&(rgb >> 8);
			var b:Number = 0xFF&rgb;			
			gray[i][j]= 0.299*r + 0.587*g +0.114*b;
		}
	}
	
	for(var x = 1; x < width-1;x++)
	{
		for(var y = 1; y < height-1;y++)
		{
			/**
			 00(a) 10(b) 20(c)
			 01(d) 11(*) 21(e)
			 02(f) 12(g) 22(h)
			*/
			var a = gray[x-1][y-1];
			var b = gray[x][y-1];
			var c = gray[x+1][y-1];
			var d = gray[x-1][y];
			var e = gray[x+1][y];
			var f = gray[x-1][y+1];
			var g = gray[x][y+1];
			var h = gray[x+1][y+1];
			
			var hor = (a+d+f) - (c+e+h);
			
			if(hor < 0)
			hor = -hor;
			
			var vert = (a+b+c) - (f+g+h);
			
			if(vert < 0)
			vert = -vert;
			
			var gc = (sobscale * (hor + vert));
			gc = (gc + offsetval);
			
			if (gc > 255)
			gc = 255;
			
			gray2[x][y] = 0xff000000  |gc<<16 | gc<<8 | gc;
		}
	}
	
	//set pixel value
	for(var i:Number = 0 ; i < width ; i++)
	{
		for(var j:Number = 0 ; j < height ; j++)
		{
				
			myBitmapData.setPixel(i,j,gray2[i][j]);
		}
	}

	var mc:MovieClip = this.createEmptyMovieClip("mc", this.getNextHighestDepth());
	mc.attachBitmap(myBitmapData,this.getNextHighestDepth());
}
Sobel();

這是之前修課時寫的一個「馬賽克」影像程式~ 不過那時AS3尚未問世~ 我想用AS3重新寫過的話~ 處理速度應該會增進不少~ 留待以後再做試驗~

Mosaic

import flash.display.BitmapData;
function setImage(para:Number):Void
{
	var myBitmapData:BitmapData = BitmapData.loadBitmap("lena");

	var height:Number = myBitmapData.height;
	var width:Number = myBitmapData.width;
	
	//declare a two-dimensional array
	var rgb:Array = new Array(width);
	for(var j:Number = 0 ; j < height ; j++)
		rgb[j] = new Array(height);
	
	//get pixel value to rgb array
	for(var i:Number = 0 ; i < width ; i++)
	{
		for(var j:Number = 0 ; j < height ; j++)
		{
		    rgb[i][j] = myBitmapData.getPixel(i,j);
		}
	}

	var checkedsize = (para < 1) ? 1 : para;
	
	//get index pixel value to temp array
	var temp:Array = new Array();
	for(var i:Number = 0 ; i < width ; i+=checkedsize)
	{
		for(var j:Number = 0 ; j < height ; j++)
		{
			if(i % checkedsize == 0 && j % checkedsize == 0)
			{
			    temp[temp.length] = rgb[i][j];
			}
		}
	}
	
	//set index pixel value to rgb array
	var tmp:Number = 0;
	for(var i:Number = 0 ; i < width ; i+=checkedsize)
	{
		for(var j:Number = 0 ; j < height ; j++)
		{
			if(i % checkedsize == 0 && j % checkedsize == 0)
			{
				for(var m:Number = 0 ; m < checkedsize ; m++)
				{
					for(var n:Number = 0 ; n < checkedsize ; n++)
					{
						rgb[i+m][j+n]=temp[tmp];
					}
				}
				tmp++;
			}
		}
	}

	//set pixel value
	for(var i:Number = 0 ; i < width ; i++)
	{
		for(var j:Number = 0 ; j < height ; j++)
		{
				myBitmapData.setPixel(i,j,rgb[i][j]);
		}
	}
	var mc:MovieClip = this.createEmptyMovieClip("mc", this.getNextHighestDepth());
	mc.attachBitmap(myBitmapData,this.getNextHighestDepth());
}
setImage(20);