XorS Function

XorS Function Example

In the example below, the program computes bitwise logical XOR of a constant and the pixel values of an RGB image. To do this, the program calls the library function iplXorS(). You can run the example either from the applet on this page or from the command line:
>arithm -t3 -v<value>

The source:

int xors( int value ) {
   const int width = 256, height = 100;
   char *rgbmode = "RGB", *rgbseq = "BGR";
   IplImage *src=NULL, *dst=NULL;
   char title[32];

   __try {

      /// create 3 channels source image with plane data order
      src = iplCreateImageHeader(
         3,                   // 3 channels
         0,                   // no alpha channel
         IPL_DEPTH_8U,        // data type is uchar
         rgbmode,             // color model
         rgbseq,              // channel sequence
         IPL_DATA_ORDER_PLANE,// channel arrangement
         IPL_ORIGIN_TL,       // top left orientation
         IPL_ALIGN_DWORD,     // 4 bytes align
         width, height,       // image width and height
         NULL, NULL,          // no ROI, no mask ROI
         NULL, NULL);         // image ID, not tiled

      /// create 3 channels destination image
      dst = iplCreateImageHeader( src->nChannels, src->alphaChannel,
         src->depth, rgbmode, rgbseq, src->dataOrder, src->origin,
         src->align, width, height,
         NULL, NULL,      // no ROI, no mask ROI
         NULL, NULL);      // image ID, not tiled

      if( !src || !dst ) return -1;

      // allocate memory for image according to header specifications,
      // don't initialize pixel values. To initialize pixel values
      // to value, set second parameter to 1 and third parameter to
      // desired number

      iplAllocateImage( src, 0, 0 );
      iplAllocateImage( dst, 0, 0 );
      if( !src->imageData || !dst->imageData ) return -2;

      /// create a color image
      if( Good != GenerateRamp8uC3P( src )) return -3;

      /// execute XOR operation with using IPLib function
      iplXorS( src, dst, value );

      /// show source and destination images
      ipView( src, " source img", !is_modal );
      sprintf( title, " iplXorS img^%d(0x%02x)", value, value );
      ipView( dst, title, is_modal );
   }
   __finally {
      iplDeallocate( src, IPL_IMAGE_ALL );
      iplDeallocate( dst, IPL_IMAGE_ALL );
   }
   return 0;
}