Optical character reader

Details Optical character reader Optical character reader

1982-04-05

1985-05-07

Martin, John C.

Image analysis

Histogram processing

For setting a threshold

382 1, 382 9, 382 63, G06K 920, G06K 900

Patent

active

045162654

ABSTRACT:
An optical character reader comprises a pre-scanner and a main scanner. The pre-scanner coarsely scans the surface of a postal item and generates video signals representing a postal item pattern. The pattern is divided into a plurality of blocks. Of these blocks, a destination address block, for example, is selected. The coordinates of the lower side of the destination address block are determined. According to the coordinates a limited area of the destination address block is determined, which is to be scanned by the main scanner. The main scanner scans finely the limited area and generates high resolution video signals. According to the high resolution video signals a postal code in the destination address block is detected and recognized.

REFERENCES:
patent: 3414731 (1968-11-01), Sperry
patent: 3774162 (1973-11-01), Flaherty et al.
patent: 3846753 (1974-11-01), Spanjersberg
patent: 4034341 (1977-07-01), Iseno et al.
patent: 4061914 (1977-12-01), Green
patent: 4158835 (1979-06-01), Miura et al.
L'Onde Electrique, vol. 46, No. 477, Dec. 1966, pp. 1370-1383, Paris (FR); M. Bordes et al.

Affiliated with

Also associated with

Rating

Optical character reader does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical character reader, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical character reader will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1804155