![]() ![]() The oldest known publication about using a line sheet as a parallax barrier to produce an autostereogram is found in an article by Auguste Berthier in the French scientific magazine 'Le Cosmos' of May 1896. For example, the Dolby-Philips Lenticular 3D display produces 28 different images. This creates a 3D effect without requiring special glasses, using two or more images. Stereoscopic effects Here the change in viewing angle needed to change images is small, so that each eye sees a slightly different view. The movie poster of the film Species II, shown in this article, is an example of this technique. This can be used to create an image that moves ('motion effect'), or can create a 'zoom' or 'morph' effect, in which part of the image expands in size or changes shape as the angle of view changes. Two or more sequential images are used, with only small differences between each image and the next. Lenticular printing has been used to produce movie posters, such as this advert for Species II, which morphs between two different character appearances when the angle of viewing changes.Īnimated prints Here the distance between different angles of view is 'medium', so that while both eyes usually see the same picture, moving a little bit switches to the next picture in the series. ![]()
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