Forum Moderators: Robert Charlton & goodroi
eg.
example.jpg appears in image search and it's in your root directory
Create a robots.txt file with the following and put it in the root.
The file should have:
User-agent: Googlebot-Image
Disallow: example.jpg
If you want to remove all images, create the robots.txt file with the following.
User-agent: Googlebot-Image
Disallow: /
What if your image is on some other website that you have no control over? Your first action should be to formally ask the site owner/webmaster to remove your image. If you've asked and had no success, you can submit a DMCA (Digital Millennium Copyright Act) request.
DMCA 1998 US Copyright Office PDF
[copyright.gov...]
Google has a helpful page on this:
Removing information from Google: Reporting copyright infringement [google.com]
The DMCA request should be the last resort, and not the first.
Further reading and questions on robots.txt in the WebmasterWorld specific forum on robots.txt [webmasterworld.com]