The generated QR code encodes the page URL and embeds it in a QR image. This allows reading from any compatible device, e.g. with your phone camera.
Now you can do the same for the images. The young Chrome Released Canary added a new entry to the menu when you right-click. The new entry allows you to instantly share an image via a QR code. How does it work:
Just right-click on an image, and select the new entry in the menu (Generate QR Code or Generate QR queues). A new dialog will open showing you a QR for the image address.
The dialog that opens allows you to download the QR as a PNG image. You can save the image, send it to your friends or read it with your phone camera to open or open the relevant image in your phone browser.