Time-lapse video from shared photos

Many places and objects are photographed by different people at different times. It can be architectural objects, monuments, reserves, various natural objects. The same Eiffel Tower is photographed every second dozens of times. A team of researchers from Google and the University of Washington decided to check the possibility of compiling Time-lapse videos from similar photos that are publicly available.

Developers searched for photos on services such as Flickr, Picasa, and some other sites. Naturally, a large number of photographs, as mentioned above, were discovered. But many of them had a different angle, different lighting, colors. Therefore, the team had to look for a way to unify the images found using the correction in a graphic editor. And this method was developed, the results are impressive.

The videos that result from these photos are not only amazing, but colorful. For example, in the continuation posted one of the obtained videos, which shows the dynamics of the glacier. The most different people photographed this glacier at the most different times. The same can be said about the skyscraper under construction.
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It seems that in Europe the most dense "coverage" of the territory with images (Google)

Some sequences were composed of more than 1000 photographs, with the processing taking up to 6 hours. The most interesting thing about all this is that the authors of the photographs, as it were, make a substantial contribution to the process of developing the technology of converting the sequence of images into video, but for this, no one (except the authors of the project, of course) needs to do anything - just to be tourists.