Character segmentation by slices

Details Character segmentation by slices Character segmentation by slices

2008-03-31

2008-12-30

Carter, Aaron W (Department: 2624)

Image analysis

Histogram processing

For segmenting an image

C382S164000, C382S176000, C382S177000, C358S453000, C358S538000

Reexamination Certificate

active

07471826

ABSTRACT:
A method for segmentation of characters in text that segments text into lines, words and slices and determines at least one of fixed pitch and proportional pitch prior to segmentation. The method computes histograms of the lines and defines widths of lobes of the histograms of the lines as the character pitches. In addition, the method further analyzes the character pitches; segments lines into words; computes histograms of the words and aggregating the histograms of the words at predetermined points. Moreover, the method segments the words; slicing them words into an upper slice and lower slice and further segments the upper slice and the lower slice. The results are then combined to provide for both coarse and fine segmentation that enhance the performance of character OCR for documents scanned as at least one of gray-scale images and color images.

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