Method and apparatus for validating holograms
AssigneeXerox Corporation
InventorsNicholas Baxter, Brian Reid
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Abstract
A method and apparatus that validates a hologram by scanning the hologram at multiple angles is disclosed. The method may include scanning a document containing the hologram at a first angle to create a first image, scanning the document containing the hologram at a second angle to create a second image, determining whether the hologram is valid, and sending the validity determination to a user interface for display to a user.
Claims17
A method for validating a hologram by scanning the hologram at multiple angles, comprising:
- scanning a document containing the hologram at a first angle to create a first image;
- scanning the document containing the hologram at a second angle to create a second image;
- determining whether the hologram is valid;
- and
- sending the validity determination to a user interface for display to a user;
- determining an image difference by subtracting one of pixels of the first image from pixels of the second image and pixels of the second image from pixels of the first image;
- and determining if the image difference exceeds a threshold, wherein if the image difference exceeds the threshold, the hologram is determined to be valid, otherwise the hologram is determined to be invalid.
An apparatus that validates a hologram by scanning the hologram at multiple angles, comprising:
- a scanner that scans a document containing the hologram at a first angle to create a first image, and scans the document containing the hologram at a second angle to create a second image;
- and
- a holographic adjudication module that determines whether the hologram is valid and sends the validity determination to a user interface for display to a user;
- determines the validity of the hologram by determining an image difference by subtracting one of pixels of the first image from pixels of the second image and pixels of the second image from pixels of the first image, and determines if the image difference exceeds a threshold, wherein if the image difference exceeds the threshold, the holographic adjudication module determines the hologram to be valid, otherwise the holographic adjudication module determines the hologram to be invalid.
A non-transitory computer-readable medium storing instructions for controlling a computing device for validating a hologram by scanning the hologram at multiple angles, the instructions comprising:
- scanning a document containing the hologram at a first angle to create a first image;
- scanning the document containing the hologram at a second angle to create a second image;
- determining whether the hologram is valid;
- and
- sending the validity determination to a user interface for display to a user;
- determining an image difference by subtracting one of pixels of the first image from pixels of the second image and pixels of the second image from pixels of the first image;
- and determining if the image difference exceeds a threshold, wherein if the image difference exceeds the threshold, the hologram is determined to be valid, otherwise the hologram is determined to be invalid.
Dependencies are inferred from the claim text.