A system and method are disclosed for identifying items, objects, and activities in photos taken by a user, of a user, or shared with a user to target ads. The method works as follows. The user takes photos relating to an interest (interest-1) that he stores in photo library. If a user visits a website relating to another interest (interest-2), and if the website shows ads, the website visit triggers an ad auction. For targeting ads, the system accesses the user’s contextual information relating to interest-2, and additionally the photo library for other interests, identifying interest-1 from the photo library. In the ad auction, the system scores ads based on relation to interest-2, or both interest-2 and interest-1 to determine priority. Finally, the system shows relevant ads based on highest priority. The method increases relevancy and quality of ads to the user without direct input from the user.

Creative Commons License

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.