A movie is just a collection of picture giving a feeling of movement. In a digital format, a picture is just a matrix of numbers. If you add those matrixes one on top of the other, and divide the total by the number of frames the movie contains, then you get the “average” picture of this movie. This image informs us on dominant colors perceived during the movie, which can be the result of directing choices, lighting, post-production or even the type of film stock used. We can get global information on the movie unavailable until digital techniques, which enables us to push the film analysis even further.
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