Method of deskewing an image

Details Method of deskewing an image Method of deskewing an image

1991-09-30

1993-08-03

Sikes, William L.

Registers

Coded record sensors

Particular sensor structure

235375, 235454, 235470, 382 45, 382 46, G06K 932

Patent

active

052331687

ABSTRACT:
A method of derotating an image includes the following steps: Scanning a scannable image to capture in memory a pixel by pixel mapped image; determining size and skew of the mapped image; performing a series of area-limited vertical pixel shifts upon the mapped image; and performing a series of area-limited horizontal pixel shifts upon the mapped image. Data contained in informational cells of the scannable image can be extracted by locating clock bits, and using the clock bits to establish a nominal horizontal and vertical position of each cell in the mapped image.

REFERENCES:
patent: 4637057 (1987-01-01), Kermisch
patent: 4837845 (1989-07-01), Pruett et al.
patent: 4975977 (1990-12-01), Kurosu et al.
patent: 5031225 (1991-07-01), Tachikawa et al.
patent: 5068904 (1991-11-01), Yamazaki

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