java 图像的腐蚀与膨胀

public void Expand(int[][] mask){
		IterBinary();//二值化
		int mh = mask.length;
		int mw = mask[1].length;
		int sh = (mh+1)/2;
		int sw = (mw+1)/2;
		
		int[] d= new int[w*h];
		
		for(int i=(mh-1)/2+1;i<h-(mh-1)/2;i++){
			for(int j=(mw-1)/2+1;j<w-(mw-1)/2;j++){
			   int s = 0;
			   
		       for(int m=0; m<mh ; m++){
		    	   for(int n=0;n<mw;n++){
		    		   if(mask[m]
*this.data[j+n-sw +(i+m-sh)*w] == 255)
		    			   s = 255;
		    	   }
		       }
		       
		       d[j + i * w] = s;   
			}
		}
		
		this.data = d;
	}

public void Erosion(int[][] mask){
		
		IterBinary();//二值化
		int mh = mask.length;
		int mw = mask[1].length;
		int sh = (mh+1)/2;
		int sw = (mw+1)/2;
		
		int[] d= new int[w*h];
		
		for(int i=(mh-1)/2+1;i<h-(mh-1)/2;i++){
			for(int j=(mw-1)/2+1;j<w-(mw-1)/2;j++){
			   int s = 0;
			   
		       for(int m=0; m<mh ; m++){
		    	   for(int n=0;n<mw;n++){
		    		   if(mask[m]
*255 == this.data[j+n-sw +(i+m-sh)*w])
		    			   s++;
		    	   }
		       }
		       
		       d[j + i * w] = (s==mh*mw)?255:0;   
			}
		}
		
		this.data = d;
	}