US2017103493A1PendingUtilityA1

Authenticating printed objects

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Individually held — no corporate assignee on recordPriority: Nov 9, 2004Filed: Dec 21, 2016Published: Apr 13, 2017
Est. expiryNov 9, 2024(expired)· nominal 20-yr term from priority
Inventors:Tony F. RodriguezRavi K. Sharma
B42D 25/333G07D 7/004G06T 1/0028G07D 7/0051G07D 7/0057G06T 2201/0051G06T 1/0021B42D 25/328B41M 3/10G07D 7/0053G07D 7/12G07D 7/0055B42D 25/00B42D 25/23B42D 2033/20B42D 2035/24
72
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Claims

Abstract

The application discloses printed objects including encoded information, and methods, apparatus and systems for authenticating such printed objects. Some such objects, methods and apparatus involve data hiding and/or encoded signals.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . An image processing method for encoding auxiliary data within a digital image, in which the digital image includes a plurality of line elements, said method comprising: determining a dominate angle associated with the plurality of line elements; and in a digital space, and using an electronic processor, varying line angles of at least a set of the plurality of line elements relative to the dominate angle, in which the varying line angles conveys the auxiliary data. 
     
     
         2 . The image processing method of  claim 1  in which the encoding comprises steganographic encoding. 
     
     
         3 . The image processing method of  claim 1  in which the encoding comprises digital watermarking. 
     
     
         4 . The image processing method of  claim 1  in which the auxiliary data comprises plural-bit information. 
     
     
         5 . The image processing method of  claim 1  in which the set comprises at least two (2) line elements. 
     
     
         6 . The image processing method of  claim 1  in which the plurality of line elements comprise vertical and horizontal lines. 
     
     
         7 . An image processing method for encoding information within an image, in which the image includes a plurality of line structures, said method comprising: identifying a dominate orientation associated with the plurality of line structures; and, using an electronic processor, varying line orientation of at least a set of the plurality of line structures relative to the dominate angle, in which the varying line orientation conveys the information. 
     
     
         8 . The image processing method of  claim 7  in which the encoding comprises steganographic encoding. 
     
     
         9 . The image processing method of  claim 7  in which the encoding comprises digital watermarking. 
     
     
         10 . The image processing method of  claim 7  in which the information comprises plural-bit information. 
     
     
         11 . The image processing method of  claim 7  in which the set comprises at least two (2) line structures. 
     
     
         12 . The image processing method of  claim 7  in which the plurality of line structures comprise vertical and horizontal lines. 
     
     
         13 . The image processing method of  claim 7  in which the dominate orientation comprises a base orientation. 
     
     
         14 . A physical object comprising:
 a first surface; and   an image printed on the first surface, the image comprising a plurality of line elements encoding auxiliary data,   the plurality of line elements comprising a dominate angle associated therewith,   in which a set of the plurality of line elements comprise varied line angles relative to the dominate angle, and in which the varied line angles convey the auxiliary data.   
     
     
         15 . The physical object of  claim 14  in which the encoding comprises steganographic encoding. 
     
     
         16 . The physical object of  claim 14  in which the encoding comprises digital watermarking. 
     
     
         17 . The physical object of  claim 14  in which the auxiliary data comprises plural-bit information. 
     
     
         18 . The physical object of  claim 14  in which the set comprises at least two (2) line elements. 
     
     
         19 . The physical object of  claim 14  in which the plurality of line elements comprise vertical and horizontal lines. 
     
     
         20 . The physical object of  claim 14  in which the auxiliary data comprises a machine recognizable pattern. 
     
     
         21 . A document comprising the physical object of  claim 14 . 
     
     
         22 . A physical object comprising:
 a first surface; and   an image printed on the first surface, the image comprising a plurality of line structures,   the plurality of line structures comprising a dominate orientation associated therewith,   in which a set of the plurality of line structures comprise varied orientation relative to the dominate orientation, and in which the varied line orientation conveys information.   
     
     
         23 . The physical object of  claim 22  in which the information comprises steganographic encoding. 
     
     
         24 . The physical object of  claim 22  in which the information comprises digital watermarking. 
     
     
         25 . The physical object of  claim 22  in which the information comprises plural-bit information. 
     
     
         26 . The physical object of  claim 22  in which the set comprises at least two (2) line structures. 
     
     
         27 . The physical object of  claim 22  in which the plurality of line structures comprise vertical and horizontal lines. 
     
     
         28 . The physical object of  claim 22  in which the dominate orientation comprises a base orientation. 
     
     
         29 . The physical object of  claim 22  in which the information comprises a machine recognizable pattern. 
     
     
         30 . The physical object of  claim 22  in which the varied orientation comprises a plurality of varied orientations. 
     
     
         31 . A document comprising the physical object of  claim 22 .

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