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US 2014/0209685 A1Published application
Covert bar code pattern design and decoding
AssigneeHoneywell International Inc.
InventorsSharath Venkatesha, Kwong Wing Au
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Abstract
Devices, methods, and systems for covert bar code pattern design and decoding are described herein. One covert bar code includes detector code and decoder code. The detector code includes a combination of responsive absorptive material and responsive reflective material, and the decoder code includes a combination of responsive absorptive material and responsive reflective material.
Claims20
A covert bar code, comprising:
- detector code, wherein the detector code includes a combination of responsive absorptive material and responsive reflective material;
- and
- decoder code, wherein the decoder code includes a combination of responsive absorptive material and responsive reflective material.
A system for detecting and decoding a covert bar code, comprising:
- a scanner configured to capture a covert bar code, wherein the covert bar code includes:
- detector code, wherein the detector code includes a combination of responsive absorptive material and responsive reflective material;
- and
- decoder code, wherein the decoder code includes a combination of responsive absorptive material and responsive reflective material;
- and
- a pattern locator and detector configured to:
- search the captured covert bar code for the presence of the detector code;
- and
- decode the decoder code upon establishing the presence of the detector code.
6 more elements
A method for detecting and decoding a covert bar code, comprising:
- locating a detector code pattern of a covert bar code in an image, wherein the detector code pattern includes a combination of infrared or ultraviolet absorptive material and infrared or ultraviolet reflective material;
- determining an alignment of a decoder code pattern of the covert bar code based on the detector bar code pattern, wherein the decoder code pattern includes a combination of infrared or ultraviolet absorptive material and infrared or ultraviolet reflective material;
- decoding bit information of the decoder code pattern;
- and
- assembling the decoded bit information to form a binary code.
2 more elements
Dependencies are inferred from the claim text.