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US 2016/0189326 A1Published application
Authenticating identification and security documents and other objects
AssigneeDigimarc Corporation
InventorsTony F. Rodriguez, Geoffrey B. Rhoads, Ravi K. Sharma
Life of this patent
Estimating the term…
Abstract
The application discloses identification and security documents and methods, apparatus and systems for authenticating such identification and security documents. Some such methods and apparatus involve steganography or data hiding.
Claims24
An apparatus comprising:
- electronic memory for storing a digital image, in which the digital image includes a plurality of line elements;
- means for determining a dominate angle associated with the line elements;
- and
- means for transforming line angles of at least a set of the plurality of line elements relative to a determined dominate angle, in which the transformed line angles conveys a plural-bit message.
1 more element
An apparatus comprising:
- memory for storing data representing a digital image, the digital image comprising a first surface and a second surface;
- means for providing a first set of print structures and a second set of print structures on the first surface, in which the first set of print structures and the second set of print structures cooperate to obscure a location on the first surface of the second set of print structures,
- means for providing the second set of print structures on the first surface so as to provide a reflection pattern.
An apparatus comprising:
- an optical imager for capturing image or video data associated with a physical object, the physical object comprising a plurality of randomly or pseudo-randomly occurring features, the physical object further comprising indicia provided thereon, the indicia conveying expected characteristics of the features including expected spatial positioning information relative to the physical object;
- a display;
- means for analyzing image or video data captured by the optical imager to obtain actual characteristics of the features, the actual characteristics of the features comprising spatial positioning information for the features on the object;
- means for analyzing the image or video data to obtain the expected characteristics of the features;
- means for, based at least on the expected characteristics and the actual characteristics of the features, providing user feedback via the display corresponding to an expected spatial positioning of the features relative to the object, the user feedback also corresponding to an actual spatial positioning of the features.
2 more elements
A cell phone comprising:
- a camera for capturing image or video data associated with a physical object, the physical object comprising a plurality of randomly or pseudo-randomly occurring features, the physical object further comprising indicia provided thereon, the indicia conveying expected characteristics of the features including expected spatial positioning information relative to the physical object;
- a display;
- means for analyzing image or video data captured by the camera to obtain actual characteristics of the features, the actual characteristics of the features comprising spatial positioning information for the features on the object;
- means for analyzing the image or video data to obtain the expected characteristics of the features;
- and
- means for, based at least on the expected characteristics and the actual characteristics of the features, providing user feedback via the display corresponding to an expected spatial positioning of the features relative to the object, the user feedback also corresponding to an actual spatial positioning of the features.
3 more elements
Dependencies are inferred from the claim text.