In the photographs that we took with the smartphone and some compact advanced, GPS system includes image geolocation data, which then facilitates the Organization of images. The videos it is not as direct and except for information that is added in the description of the video, it is not easy to know where it has been recorded.

A solution the La Salle campus scientists pose of the University Ramon Llull (Barcelona), which have developed an algorithm that relies on scenes that appear in the video as well as in the sound, are capable of geotag video with enough accuracy.

Comparing information which is already known from other videos

according to ewenzhou,The study has been published in Information Sciences and there described the process followed: sound and key images of the video are extracted data which are then compared with a database of videos already geo-located and extracted key information.

The success is very moderate in terms of ability to geotag a video, basically because by now used as reference an audiovisual database of only 10,000 sequences. Despite this, developers claim that the system is four times more productive than the current ones based on automatic algorithms.

At Ramon Llull University, proposed is looking for more similar videos onto which want to geotag, with a hit of 3% within a radius of 10 km with respect to its real situation, and 1% if we look for an accuracy of one kilometre. To improve those numbers is required a much wider analyzed database.

The algorithm could be useful in complementing the search for the location of a video together with those who have extra information in the form of description or title, extending the possibilities of refine a search in Youtube exclusively by the location of the video and not just the name, or much more interesting, help discover in cases of research where recorded a scene from a video.

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