Image analysis – Image segmentation – Segmenting individual characters or words
Reexamination Certificate
2005-02-15
2005-02-15
Johns, Andrew W. (Department: 2621)
Image analysis
Image segmentation
Segmenting individual characters or words
C382S220000, C382S218000
Reexamination Certificate
active
06856697
ABSTRACT:
A character reading technique recognizes character strings in grayscale images where characters within such strings have poor contrast, are variable in position or rotation with respect to other characters in the string, or where portions of characters in the string are partially obscured. The method improves classification accuracy by improving the robustness of the underlying correlation operation or the character design. Characters are divided into regions before performing correlations. Based upon the relative individual region results, region results are combined into a whole character result. Using the characters that are read, a running checksum is computed and, based upon the checksum result, characters are replaced to produce a valid result.
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Lee Shih-Jong J.
Louis Piloco
Alavi Amir
Johns Andrew W.
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