12-03-2015 дата публикации
Номер: US20150070350A1
A security device for projecting a collection of synthetic images as well as a computer-implemented method for producing such a security device are provided. The synthetic images may represent different viewpoints of a target object or image that change from one viewpoint image to another viewpoint image as the location of the observer changes relative to the device. The nature of each synthetic image can, however, be completely arbitrary, much like the images that are provided by a display device such as a television or computer monitor. In an exemplary embodiment, a special symmetry is used to generate the synthetic images, which allows the device to be manufactured without regard for registration. 1. A security device for projecting a collection of synthetic images , which comprises: a collection of focusing elements , with each focusing element having an optical footprint; and at least one image layer , the collection of focusing elements and the at least one image layer together projecting a different image as the device is viewed at different angles ,wherein, the at least one image layer is made up of an array of discrete digitized domains, each domain constituting an identical or substantially identical subset of each focusing element's optical footprint, the domains being discrete in that no two subsets overlap and every point in each subset is closest to its respective focusing element, each domain being divided into a number of discrete pixels equal to the number of images,wherein, each image is processed digitally, the number of pixels in each digitally processed image being equal or proportionate to the total number of focusing elements, the pixels in each digitally processed image being distributed to the same location within each digitized domain, such that each location within one digitized domain is marked with the color of a pixel from a different digitally processed image, allowing for the device to project a different image as the device is viewed ...
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