The description reads, Sharpen images and improve colour, lighting, and contrast using Super resolution for images.
This is currently an experimental feature so it may not be available to you yet.
Image URLs will be sent to Microsoft to provide super resolution.
you could choose to enhance images on sites you like.
No user identifiers are included in the requests to the servers.
The images are cached for 30 days to improve performance, reads a supportdocumentfrom Redmond.
source: www.techworm.net