Abstract: A system and method are provided for constructing an optical device having a substrate and a filter layer provided on the substrate. The filter layer includes features that render a first image and gaps between the features. An image layer is provided on the filter layer and includes image elements provided within the gaps between the features. The first image is rendered in reflected light and the second image is rendered in transmitted light. According to one example, a second filter layer may be provided on a second side of the substrate such that features of the filter layer and second features of the second filter layer may be at least partially out of vertical alignment in order to define a plurality of light ray entry angles.

Abstract: A computer-implemented method is provided for creating an animation from a plurality of latent images encoded into a visible image, where the encoded visible image is visually similar to the visible image when viewed with a naked eye. The method includes generating, via a processor, a first latent image having a first pattern of elements and assigning a first encoding parameter to the first pattern of elements. A second latent image is generated having a second pattern of elements and a second encoding parameter is assigned to the second pattern of elements, wherein the second encoding parameter is different than the first encoding parameter. The first pattern of elements and the second pattern of elements are embedded in the encoded visible image for decoding using a decoder having decoding parameters that match the corresponding first encoding parameter and the second encoding parameter. The decoded first latent image and the decoded second latent image are sequentially displayed to reveal the animation.

Abstract: A computer-implemented method is provided for creating an animation from a plurality of latent images encoded into a visible image, where the encoded visible image is visually similar to the visible image when viewed with a naked eye. The method includes generating, via a processor, a first latent image having a first pattern of elements and assigning a first encoding parameter to the first pattern of elements. A second latent image is generated having a second pattern of elements and a second encoding parameter is assigned to the second pattern of elements, wherein the second encoding parameter is different than the first encoding parameter. The first pattern of elements and the second pattern of elements are embedded in the encoded visible image for decoding using a decoder having decoding parameters that match the corresponding first encoding parameter and the second encoding parameter. The decoded first latent image and the decoded second latent image are sequentially displayed to reveal the animation.

Abstract: Various examples are provided for creating encoded security images that are formed by embedding a multi-shade hidden or latent image into a visible image. The multi-shade latent image may include image content having a wide range of tonal values. An article of manufacture is provided having a surface with image elements thereon, the image elements include characteristics that correspond to a relative color or a relative shade of a source image for a polychromic or multiple shade latent image. The latent image is visible when the surface is viewed at glancing angles.

Abstract: A system and method are provided for constructing an optical device having a substrate and a filter layer provided on the substrate. The filter layer includes features that render a first image and gaps between the features. An image layer is provided on the filter layer and includes image elements provided within the gaps between the features. The first image is rendered in reflected light and the second image is rendered in transmitted light. According to one example, a second filter layer may be provided on a second side of the substrate such that features of the filter layer and second features of the second filter layer may be at least partially out of vertical alignment in order to define a plurality of light ray entry angles.