Let's look at some more large image examples

click on the image to see the original jpg file. 

click on the image to see the original jpg file. 

Click on the image above to open a window with just the original jpg file. 

Click this sentence to get the 2x upsampled image

Click this sentence to get the 3x upsampled image

Click this sentence to get the 4x upsampled image

Here is the 2x upsampled image, tiled on the server and interactively served:

Here is the 3x upsampled image

and here is the 4x upsampled image