| 摘要 |
A content distribution server for distributing content through a network has a content storage, an advertisement information storage storing advertisement images corresponding to location information showing a location of an advertisement target facility, a viewing request receiver receiving a request for viewing the content from a user device, a display target image judge acquiring the electronic document, showing the contents of the content designated by the viewing request, from the content storage and judging the picture data, designated as the display target by the acquired electronic document, a display target advertisement determiner acquiring the location information attached to the display target image, calculating a distance between locations where the display target image has been taken and each of a plurality of advertisement target facilities from the acquired location information and each location information of a plurality of advertisement images in the content storage, and determining an advertisement image.
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