Detecting faces in image search
As I have noted before, searching images is much more of a challenge than searching text. Recently, search engines have been adding some ways to limit image searches to faces.
At Google, advanced image search now includes an option to look for faces only. A search using the name of a particular person may show mostly images containing that person’s face but it will also include images associated with text that contains the name being searched but has someone else’s picture. Sometimes you even get an image that doesn’t contain any faces. Still, it’s progress.
Microsoft Live Search has also just added some new capability to image searches. You can now add a filter to an image search to restrict it to faces.