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#include <string.h>
#include "ImageMagick-6/magick/MagickCore.h"

int main()
{
  ExceptionInfo     *exception;
  Image             *base_image, *reference_image, *composed_image;
  double            similarity;
  RectangleInfo     offset;
  ImageInfo         *image_info_base, *image_info_reference, *image_info_composed;

  char base_image_src[] = "in1.jpeg";
  char reference_image_src[] = "in2.jpeg";
  char composed_image_dst[] = "out.jpeg";

  MagickCoreGenesis(NULL, MagickTrue);
  exception = AcquireExceptionInfo();

  image_info_base = CloneImageInfo((ImageInfo *) NULL);
  (void) strcpy(image_info_base->filename, base_image_src);
  base_image = ReadImage(image_info_base, exception);
  CatchException(exception);

  image_info_reference = CloneImageInfo((ImageInfo *) NULL);
  (void) strcpy(image_info_reference->filename, reference_image_src);
  reference_image = ReadImage(image_info_reference, exception);
  CatchException(exception);

  composed_image = SimilarityImage(base_image, reference_image, &offset, &similarity, exception);
  CatchException(exception);

  printf("%f\n", similarity);
  printf("w %d h %d x %d y %d\n", (int) offset.width, (int) offset.height, (int) offset.x, (int) offset.y);

  strcpy(composed_image->filename, composed_image_dst);
  composed_image->x_resolution = 256;
  composed_image->y_resolution = 256;
  composed_image->rows = 256;
  composed_image->columns = 256;

  image_info_composed = CloneImageInfo((ImageInfo *) NULL);

  if (WriteImage(image_info_composed, composed_image) == MagickTrue)
    printf("image saved to disk\n");
  CatchException(&composed_image->exception);
  
  exception = DestroyExceptionInfo(exception);
  MagickCoreTerminus();
  return 0;
}