Universal character segmentation scheme for multifont OCR images

Details Universal character segmentation scheme for multifont OCR images Universal character segmentation scheme for multifont OCR images

1988-11-16

1990-06-05

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

382 14, 382 15, G06K 934

Patent

active

049320653

ABSTRACT:
The method comprises: selecting an examination window whose size covers the image data associated with a character within a set of characters; presenting image data for a known character to the examining window to obtain a probability density function (PDF) for each pixel within the examining window for each character in the set of characters to be found or segmented to generate a composite PDF for each pixel within the examining window; and using the composite PDF to determine when the examining window is positioned over image data associated with a character within the character set.

REFERENCES:
patent: 3519990 (1970-07-01), Holt et al.
patent: 3609686 (1971-09-01), Savory et al.
patent: 4562594 (1985-12-01), Bednar et al.
patent: 4680803 (1987-07-01), Dilella

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