pattern.c

This is code tutorial for image processing include:histogram,sketon....

        out_image[i][j] = 0;


   for(i=50; i<80; i++)
      for(j=50; j<80; j++)
        out_image[i][j] = 2;

   for(i=30; i<60; i++)
      for(j=30; j<60; j++)
        out_image[i][j] = 5;



     /* depth file with four levels */
   for(i=0; i<rows; i++)
      for(j=0; j<cols; j++)
        out_image[i][j] = 0;

   for(i=20; i<80; i++)
      for(j=20; j<80; j++)
        out_image[i][j] = 2;

   for(i=30; i<70; i++)
      for(j=30; j<70; j++)
        out_image[i][j] = 3;

   for(i=40; i<60; i++)
      for(j=40; j<60; j++)
        out_image[i][j] = 4;


     /* basic two square for a depth file */
   for(i=0; i<rows; i++)
      for(j=0; j<cols; j++)
        out_image[i][j] = 0;

   for(i=30; i<60; i++)
      for(j=30; j<60; j++)
        out_image[i][j] = 2;

   for(i=50; i<80; i++)
      for(j=50; j<80; j++)
        out_image[i][j] = 4;


	 
	 /* depth file with four levels */
   for(i=0; i<rows; i++)
      for(j=0; j<cols; j++)
        out_image[i][j] = 0;

   for(i=20; i<80; i++)
      for(j=20; j<80; j++)
        out_image[i][j] = 2;

   for(i=35; i<65; i++)
      for(j=35; j<65; j++)
        out_image[i][j] = 4;

   for(i=45; i<45; i++)
      for(j=45; j<45; j++)
        out_image[i][j] = 6;



     /* depth file with two levels */
   for(i=0; i<rows; i++)
      for(j=0; j<cols; j++)
        out_image[i][j] = 0;

   for(i=20; i<60; i++)
      for(j=20; j<60; j++)
        out_image[i][j] = 2;

   for(i=40; i<80; i++)
      for(j=40; j<80; j++)
        out_image[i][j] = 5;


     /* basic square for a depth file */
   for(i=0; i<rows; i++)
      for(j=0; j<cols; j++)
        out_image[i][j] = 0;

   for(i=30; i<70; i++)
      for(j=30; j<70; j++)
        out_image[i][j] = 5;



     /* make a step pattern of gray shades */
   for(i=0; i<rows; i++)
      for(j=0; j<cols; j++)
        out_image[i][j] = 0;
   for(i=0; i<rows; i++)
      for(j=10; j<20; j++)
        out_image[i][j] = 5;
   for(i=0; i<rows; i++)
      for(j=20; j<30; j++)
        out_image[i][j] = 10;
   for(i=0; i<rows; i++)
      for(j=30; j<40; j++)
        out_image[i][j] = 20;


     /*  make a club to look at thinning and mat */
   for(i=0; i<rows; i++){
      for(j=0; j<cols; j++){
        if( i>4 && i<11 && j>4 && j<17)
          out_image[i][j] = 200;
        else
          out_image[i][j] = 0;
    }
   }
   for(i=0; i<rows; i++){
      for(j=0; j<cols; j++){
        if( i>1 && i<17 && j>4 && j<11)
          out_image[i][j] = 200;
    }
   }


      /*  make a rectangle with a hole in it */
   for(i=0; i<rows; i++){
      for(j=0; j<cols; j++){
        if( i>=5 && i<=8 && j>=5 && j<=18)
          out_image[i][j] = 200;
    }
   }
   for(i=0; i<rows; i++){
      for(j=0; j<cols; j++){
        if( i>=15 && i<=18 && j>=5 && j<=18)
          out_image[i][j] = 200;
    }
   }
   for(i=0; i<rows; i++){
      for(j=0; j<cols; j++){
        if( j>=5 && j<=8 && i>=5 && i<=18)
          out_image[i][j] = 200;
    }
   }
   for(i=0; i<rows; i++){
      for(j=0; j<cols; j++){
        if( j>=15 && j<=18 && i>=5 && i<=18)
          out_image[i][j] = 200;
    }
   }

     /* make the entire area white with a black hole
     in it good for interior outline */
   for(i=0; i<rows; i++){
      for(j=0; j<cols; j++){
         if( i>=10 && i<=15 && j>=10 && j<=18)
            out_image[i][j] = 0;
         else
            out_image[i][j] = 200;
      }
   }


      /* make a square  */
   for(i=0; i<rows; i++){
      for(j=0; j<cols; j++){
         if( i>=8 && i<=18 && j>=8 && j<=18)
            out_image[i][j] = 200;
         else
            out_image[i][j] = 0;
      }
   }

      /* make a square  with a hole in
        it for closing practice */
   for(i=0; i<rows; i++){
      for(j=0; j<cols; j++){
         if( i>=8 && i<=13 && j>=8 && j<=13)
            out_image[i][j] = 200;
         else
            out_image[i][j] = 0;
      }
   }
   out_image[10][10] = 0;
   out_image[11][10] = 0;

      /* make 2 small squares
        illustrate closing and special closing */
   for(i=0; i<rows; i++)
      for(j=0; j<cols; j++)
         out_image[i][j] = 0;
   for(i=0; i<rows; i++){
      for(j=0; j<cols; j++){
         if( i>=8 && i<=13 && j>=8 && j<=9)
            out_image[i][j] = 200;
         if( i>=8 && i<=13 && j>=11 && j<=13)
            out_image[i][j] = 200;
      }
   }

      /* make a rectangle  */
   for(i=0; i<rows; i++){
      for(j=0; j<cols; j++){
         if( i>=8 && i<=18 && j>=4 && j<=18)
            out_image[i][j] = 200;
         else
            out_image[i][j] = 0;
      }
   }

      /* make a block letter A */
   for(i=0; i<rows; i++)
      for(j=0; j<cols; j++)
         out_image[i][j] = 0;
   for(i=0; i<rows; i++)
      for(j=0; j<cols; j++)
         if(i>=10 && i<=20 && j>=10 && j<=50)
          out_image[i][j] = 200;
   for(i=0; i<rows; i++)
      for(j=0; j<cols; j++)
         if(i>=40 && i<=50 && j>=10 && j<=50)
          out_image[i][j] = 200;
   for(i=0; i<rows; i++)
      for(j=0; j<cols; j++)
         if(i>=10 && i<=90 && j>=10 && j<=20)
          out_image[i][j] = 200;
   for(i=0; i<rows; i++)
      for(j=0; j<cols; j++)
         if(i>=10 && i<=90 && j>=40 && j<=50)
          out_image[i][j] = 200;

      /* make a broken line */
   for(i=0; i<rows; i++)
      for(j=0; j<cols; j++)
         out_image[i][j] = 0;
   for(i=0; i<rows; i++)
      for(j=0; j<cols; j++)
         if(i>=10 && i<=11 && j>=5 && j<=18)
          out_image[i][j] = 200;
   out_image[10][11] = 0;
   out_image[11][11] = 0;


      /* make two squares joined together */
   for(i=0; i<rows; i++)
      for(j=0; j<cols; j++)
         out_image[i][j] = 0;
   for(i=0; i<rows; i++){
      for(j=0; j<cols; j++){
         if( i>=5 && i<=15 && j>=5 && j<=9)
            out_image[i][j] = 200;
         if( i>=5 && i<=15 && j>=12 && j<=17)
            out_image[i][j] = 200;
      }
   }
   out_image[10][10] = 200;
   out_image[10][11] = 200;




   /* make a texture, checkerboard of 100-200
      with each square the size given by the 
      variable square_size 
      I'll do this a little different and let
      the user specify the square size as the
      last parameter on the line. */

   sqaure_size = atoi(argv[4]);
   ii=0; 
   jj=0; 
   set_i=0; 
   set_j=0;
   for(i=0; i<rows; i++){
      for(j=0; j<cols; j++){

            /* odd rows */
         if( (set_i%2) == 0){
            if( (set_j%2) == 0)
               out_image[i][j] = 100;
            else
               out_image[i][j] = 200;
         }
            /* even rows */
         else{
            if( (set_j%2) == 0)
               out_image[i][j] = 200;
            else
               out_image[i][j] = 100;
         }

         jj++;
         if(jj > square_size){
            jj = 0;
            set_j++;
         }
      }  /* ends loop over j */

      jj=0; 
      set_j=0;
      ii++;
      if(ii > square_size){
         ii = 0;
         set_i++;
      }
   }  /* ends loop over i */


      /* create a random image 0-255 */
   for(i=0; i<rows; i++)
      for(j=0; j<cols; j++)
        out_image[i][j] = (rand() % 255);


      /* create a random image 100-150  */
   for(i=0; i<rows; i++)
      for(j=0; j<cols; j++)
        out_image[i][j] = 100 + (rand() %  50);


      /* make vertical stripes */
   for(i=0; i<rows; i++){
      for(j=0; j<cols; j++){
		   if( (j > 10  &&  j < 30)    ||
		       (j > 50  &&  j < 70)    ||
		       (j > 90  &&  j < 99) )
			   out_image[i][j] = 200;
			else
			   out_image[i][j] = 50;
	   }
   }


      /* make a blank image that is not zero */
   for(i=0; i<rows; i++){
      for(j=0; j<cols; j++){
		   out_image[i][j] = 150;
	   }
   }


      /* make a random pattern background */
   for(i=0; i<rows/2; i++)
      for(j=0; j<cols/2; j++)
        out_image[i][j] = (abs(rand()) ) %  255;

      /* make a horizontal stripe */
   for(i=10; i<20; i++)
      for(j=0; j<cols/2; j++)
        out_image[i][j] = (abs(rand()) ) % 25   + 50;

      /* make a horizontal stripe */
   for(i=30; i<40; i++)
      for(j=0; j<cols/2; j++)
        out_image[i][j] = (abs(rand()) ) % 25   + 50;

      /* make a vertical stripe */
   for(i=0; i<rows/2; i++)
      for(j=10; j<20; j++)
        out_image[i][j] = (abs(rand()) ) % 25   + 50;

      /* make a vertical stripe */
   for(i=0; i<rows/2; i++)
      for(j=30; j<40; j++)
        out_image[i][j] = (abs(rand()) ) % 25   + 50;

      /* copy the 50x50 to the rest of the 100x100 */
   for(i=0; i<50; i++)
      for(j=50; j<cols; j++)
	     out_image[i][j] = out_image[i][j-50];

   for(i=50; i<rows; i++)
      for(j=0; j<50; j++)
	     out_image[i][j] = out_image[i-50][j];

   for(i=50; i<rows; i++)
      for(j=50; j<cols; j++)
	     out_image[i][j] = out_image[i-50][j-50];

      /* make the left edge look like the right edge */
   for(i=0; i<rows; i++)
      for(j=90; j<cols; j++)
	     out_image[i][j] = out_image[i][j-90];

      /* make the bottom edge look like the top edge */
   for(i=90; i<rows; i++)
      for(j=0; j<cols; j++)
	     out_image[i][j] = out_image[i-90][j];


short p1[10][10] = 
   {{11, 11, 11, 11, 11, 11, 11, 11, 11, 11},
    {11, 11, 11, 11, 11, 11, 11, 11, 11, 11},
    {11, 11, 11, 11, 11, 11, 11, 11, 11, 11},
    {11, 11, 11, 11, 11, 11, 11, 11, 11, 11},
    {11, 11, 11, 11, 11, 11, 11, 11, 11, 11},
    {11, 11, 11, 11, 11, 11, 11, 11, 11, 11},
    {11, 11, 11, 11, 11, 11, 11, 11, 11, 11},
    {11, 11, 11, 11, 11, 11, 11, 11, 11, 11},
    {11, 11, 11, 11, 11, 11, 11, 11, 11, 11},
    {11, 11, 11, 11, 11, 11, 11, 11, 11, 11}};

short p2[10][10] = 
   {{11, 11, 11, 11, 11, 11, 11, 11, 11, 11},
    {11, 11, 11, 11, 11, 11, 11, 11, 11, 11},
    {11, 11, 11, 11, 11, 11, 11, 11, 11, 11},
    {11, 11, 11, 11, 11, 11, 11, 11, 11, 11},
    {11, 11, 11, 11, 11, 11, 11, 11, 11, 11},
    {11, 11, 11, 11, 11, 11, 11, 11, 11, 11},
    {11, 11, 11, 11, 11, 11, 11, 11, 11, 11},
    {11, 11, 11, 11, 11, 11, 11, 11, 11, 11},
    {11, 11, 11, 11, 11, 11, 11, 11, 11, 11},
    {11, 11, 11, 11, 11, 11, 11, 11, 11, 11}};

#endif