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US 2006/0124744 A1Published application
Location of machine readable codes in compressed representations
AssigneeRicoh Company, Ltd.
InventorsMichael Gormish, Xiaojun Feng
Life of this patent
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Abstract
A method, apparatus, and article of manufacture for locating machine readable codes (e.g., bar codes) in compressed representations are described. In one embodiment, the method comprises obtaining information from a file of a compressed representation of an image and locating a machine-readable code in the compressed representation of the image.
Claims76
A method comprising:
- obtaining information from a file of a compressed representation of an image;
- and
- locating a machine-readable code in the compressed representation of the image.
An apparatus comprising:
- an extraction unit to extract information from a file of a compressed representation of an image;
- and
- a code locator to locate a machine-readable code in the compressed representation of the image.
The apparatus defined in claim 22 wherein the file comprises a JPEG 2000 file.
A method comprising:
- receiving a file of a compressed representation of an image;
- and
- using header data of the file for locating one or more machine-readable codes in the image.
A method comprising:
- receiving a file of a compressed representation of an image;
- locating one or more machine-readable codes in the image;
- and
- modifying the file to include information indicative of the one or more machine-readable codes.
1 more element
A method comprising:
- performing image analysis on a compressed file using header data associated with the compressed file;
- selecting a portion of the compressed file based on results of the image analysis;
- and
- partially decoding the portion of the compressed file.
1 more element
A method comprising:
- locating a machine-readable code in a compressed file;
- creating a modified version of the compressed file to include a location of the machine-readable code in the compressed file.
A method comprising:
- locating a machine-readable code in a compressed file;
- decoding a portion of the compressed file to obtain pixel domain data;
- creating a modified version of the compressed file by storing one or more decoded values associated with the machine-readable code as metadata.
A method comprising:
- locating a machine-readable code in a compressed file;
- decoding a portion of the compressed file to obtain pixel domain data;
- rewriting the machine-readable code;
- recompressing the portion of the compressed file to create a modified version of the compressed file having a more readable version of the machine-readable code.
1 more element
Dependencies are inferred from the claim text.