cv::Mat IMGCONVERT(string imgpath)
{
  //This grabs the image at "imgpath", measures it, creates center measures, and copies a white border around it using those measures.
  // Then it returns the new image as a new Mat
  cout << "IMGCONVERT() called! n";
  Mat originalimage;
  Mat Finalimage;
  string imgtoloadpath = filepath + imgpath;
  originalimage = imread(imgtoloadpath.c_str(), IMREAD_COLOR);
  int imgrows = originalimage.rows; // integer number of rows in the image
  int imgcol = originalimage.cols; // integer number of columns in the image
  int TOPBOT = (screenheight-imgrows)/2; //Spacing to center image
  int LEFTRIGHT = (screenwidth-imgcol)/2; //Spacing to center image
  copyMakeBorder(originalimage, Finalimage, TOPBOT, TOPBOT, LEFTRIGHT,    LEFTRIGHT, BORDER_CONSTANT, whitecolor); // (Source, destination, border,  border, border, border, type (constant or from edge), color (if BORDER_CONSTANT)
  return Finalimage; // pass final image out of function
}

namedWindow("MAIN WINDOW", CV_WINDOW_NORMAL); //Create the main window. Must set CV_WINDOW_NORMAL so it can be resized in the next step.
cvSetWindowProperty("MAIN WINDOW", CV_WND_PROP_FULLSCREEN, CV_WINDOW_FULLSCREEN); //Force the window to be fullscreen borderless.