Fr0m the The Google Keyword Blog:
As part of a collaboration between Google, photo industry consortium CEPIC, and IPTC, the global technical standards body for the news media, you can now access rights-related image metadata in Google Images.
It’s traditionally been difficult to know the creator of images on the web, as well as who might own the rights. This information is often part of image metadata, and is key to protecting image copyright and licensing information.
Starting today, we’ve added Creator and Credit metadata whenever present to images on Google Images. To see this information on Google Images, you can click on the “Image Credits” link to view the metadata fields.
Over the coming weeks, we will also add Copyright Notice metadata.
Read the Complete Blog Post
Note: Google’s Advanced Image Search interface continues to offer a “usage rights” limiting option.
See Also: Making Visual Content More Useful in Search (via Google Keyword Blog)
New Google Image search features announced.