模拟图像去噪之临域平均法算法实现.txt

c语言的一些常见的算法以及思考和改进的文章,写的很不错,花费了很大的精力从网络了搜罗的,希望大家喜欢.

模拟图像去噪之临域平均法算法实现[原创] 
用于消除图像中的噪点。代码有点繁琐，可以大幅度优化，有时间再加上。

/*
   realization of linyu lvbo method of image processing
   AUTHOR:BugEyes
   http://BugEyes.blog.edu.cn
*/

#define N 10
#define M 255

＃i nclude <conio.h> /* for the function 'clrscr' */
＃i nclude <stdlib.h> /* for the function 'random' */

void init(int arr[N][N])
{
  int i,j;
  for(i=0;i<N;i++)
    for(j=0;j<N;j++)
      arr[i][j]=random(M);
}

int linyu(int arr[N][N],int row,int col,int core[3][3])
{ /* to compute the current value according to its linyu */
   int result=0;
   int i,j;
   int count=0;
   for(i=0;i<3;i++)
      for(j=0;j<3;j++)
         count+=core[i][j];
   if(row==0&&col==0)
   {
     result=arr[row][col]*(core[0][0]+core[0][1]+core[0][2]+core[1][0]+core[2][0]);
     result+=arr[row][col]*core[1][1]+arr[row][col+1]*core[1][2];
     result+=arr[row+1][col]*core[2][1]+arr[row+1][col+1]*core[2][2];
     result/=count;
   }
   else if(row==0&&col==N-1)
   {
     result=arr[row][col]*(core[0][0]+core[0][1]+core[0][2]+core[1][2]+core[2][2]);
     result+=arr[row][col]*core[1][1]+arr[row][col-1]*core[1][0];
     result+=arr[row+1][col]*core[2][1]+arr[row+1][col-1]*core[2][0];
     result/=count;
   }
   else if(row==N-1&&col==0)
   {
     result=arr[row][col]*(core[0][0]+core[1][0]+core[2][0]+core[2][1]+core[2][2]);
     result+=arr[row][col]*core[1][1]+arr[row][col+1]*core[1][2];
     result+=arr[row-1][col]*core[0][1]+arr[row-1][col+1]*core[0][2];
     result/=count;
   }
   else if(row==N-1&&col==N-1)
   {
     result=arr[row][col]*(core[0][2]+core[1][2]+core[2][2]*core[2][0]+core[2][1]);
     result+=arr[row][col]*core[1][1]+arr[row][col-1]*core[1][0];
     result+=arr[row-1][col-1]*core[0][0]+arr[row-1][col]*core[0][1];
     result/=count;
   }
   else if(row==0&&col>0&&col<N-1)
   {
     result=arr[row][col-1]*(core[0][0]+core[1][0]);
     result+=arr[row][col]*(core[0][1]+core[1][1]);
     result+=arr[row][col+1]*(core[0][2]+core[1][2]);
     result+=arr[row+1][col-1]*core[2][0]+arr[row+1][col]*core[2][1];
     result+=arr[row+1][col+1]*core[2][2];
     result/=count;
   }
   else if(row>0&&row<N-1&&col==0)
   {
     result=arr[row-1][col]*(core[0][0]+core[0][1]);
     result+=arr[row][col]*(core[1][0]+core[1][1]);
     result+=arr[row+1][col]*(core[2][0]+core[2][1]);
     result+=arr[row-1][col+1]*core[0][2];
     result+=arr[row][col+1]*core[1][2];
     result+=arr[row+1][col+1]*core[2][2];
     result/=count;
   }
   else if(col>0&&col<N-1&&row==N-1)
   {
     result=arr[row-1][col-1]*core[0][0];
     result+=arr[row-1][col]*core[0][1];
     result+=arr[row-1][col+1]*core[0][2];
     result+=arr[row][col-1]*(core[1][0]+core[2][0]);
     result+=arr[row][col]*(core[1][1]+core[2][1]);
     result+=arr[row][col+1]*(core[1][2]+core[2][2]);
     result/=count;
   }
   else if(row>0&&row<N-1&&col==N-1)
   {
     result=arr[row-1][col-1]*core[0][0];
     result+=arr[row][col-1]*core[1][0];
     result+=arr[row+1][col-1]*core[2][0];
     result+=arr[row-1][col]*(core[0][1]+core[0][2]);
     result+=arr[row][col]*(core[1][1]+core[1][2]);
     result+=arr[row+1][col]*(core[2][1]+core[2][2]);
     result/=count;
   }
   else
   {
     result=arr[row-1][col-1]*core[0][0];
     result+=arr[row-1][col]*core[0][1];
     result+=arr[row-1][col+1]*core[0][2];
     result+=arr[row][col-1]*core[1][0];
     result+=arr[row][col]*core[1][1];
     result+=arr[row][col+1]*core[1][2];
     result+=arr[row+1][col-1]*core[2][0];
     result+=arr[row+1][col]*core[2][1];
     result+=arr[row+1][col+1]*core[2][2];
     result/=count;
   }
   return result;
}

void compute(int arr[N][N],int core[3][3],int result[N][N])
{ /* to compute the result image */
  int row,col;
  for(row=0;row<N;row++)
    for(col=0;col<N;col++)
      result[row][col]=linyu(arr,row,col,core);
}

void output(int arr[N][N])
{
  int i,j;
  for(i=0;i<N;i++)
  {
    for(j=0;j<N;j++)
      printf("%4d",arr[i][j]);
    printf("\n\n");
  }
}

void main()
{
  int array[N][N];
  int result[N][N];
  int core[3][3]={{1,2,1},
                         {2,4,2},
                         {1,2,1}};
  int core1[3][3]={{1,1,1},
                           {1,1,1},
                           {1,1,1}};
  int core2[3][3]={{2,4,2},
                           {4,8,4},
                           {2,4,2}};
  clrscr();
  init(array);
  compute(array,core2,result);/*compute(array,core,result); or compute(array,core1,result); */
  printf("\nThe original array is ...\n\n");
  output(array);
  printf("\nThe result array is....\n\n");
  output(result);
}