Enlarge a small QRCode using different interpolation modes

This sample shows the results of enlarging a small (57 by 57 pixels) image of a QRCode using the 4 available interpolation modes. While for most images (such as portraits or landscapes), Linear or Cubic interpolation modes would normally yield better-looking results, for images like QRCodes or barcodes using the NearestNeighbor or Downscale modes is more appropriate.