Apparatus and method for scanning and decoding information in an identified location in a document
AssigneeSymbol Technologies, Inc.
InventorMing-Xi Zhao
Life of this patent
Estimating the term…
Abstract
A imaging scanner identifies first and second locations in a first and second captured image of a document, analyzes each character in the identified locations, and produces a first and second string, each including a character and a confidence value. The device determines that a first measurement of the confidence values in each of the first and second string is beyond a range of a first threshold. The device compares the confidence value for each character in the first string with a corresponding confidence value in the second string, selects a character from one of the first or second string with a higher confidence value; and produces a combined string including the selected characters and the confidence value associated with each selected character.
Claims20
A method comprising:
- sequentially, in an imaging scanner, capturing two or more images of a single document;
- identifying, in the imaging scanner, a first location in a first captured image where information to be decoded is located, analyzing each character in the first location, and producing a first string including both a corresponding character and a first confidence value for each character in the first location;
- determining, in the imaging scanner, that a first measurement of the confidence values in the first string is beyond a range associated with a first confidence threshold and;
- identifying, in the imaging scanner, a second location in a second captured image where information to be decoded is located, analyzing each character in the second location, and producing a second string including both a corresponding character and a second confidence value for each character in the second location;
- comparing, in the imaging scanner, the first confidence value for each character in an identified location in the first string with the second confidence value for the character in the same identified location in the second string;
- selecting, in the imaging scanner, a character from one of the first string or the second string with a higher confidence value;
- and
- producing and outputting, by the imaging scanner, a combined string including the selected characters.
An imaging scanner comprising:
- an image capturing component configured to sequentially capturing two or more images of a single document;
- and
- a processor configured to:
- identify a first location in a first captured image where information to be decoded is located, analyze each character in the first location, and produce a first string including both a corresponding character and a first confidence value for each character in the first location;
- determine that a first measurement of the confidence values in the first string is beyond a range associated with a first confidence threshold;
- identify a second location in a second captured image where information to be decoded is located, analyze each character in the second location, produce a second string including both a corresponding character and a second confidence value for each character in the second location;
- compare the first confidence value for each character in an identified location in the first string with the second confidence value for the character in the same identified location in the second string;
- select a character from one of the first string or the second string with a higher confidence value;
- and
- produce and output a combined string including the selected characters.
Dependencies are inferred from the claim text.