Apparatus for geometrical correction of a distored image

Details Apparatus for geometrical correction of a distored image Apparatus for geometrical correction of a distored image

1991-03-29

1993-07-27

Mancuso, Joseph

Image analysis

Histogram processing

For setting a threshold

36441322, 382 44, 382 54, 345100, G06K 900

Patent

active

052316734

ABSTRACT:
Vertical lines in a distorted image, which are curved by distortion, are converted to straight vertical lines in a first image period. In a subsequent image period horizontal lines in the distorted image, which are curved by the distortion, are converted into straight lines. As the correction is effected in stages, it can be performed in a relatively fast manner, and a corrected image is available after one image period.

REFERENCES:
patent: 3905045 (1975-09-01), Nickel
patent: 4430749 (1984-02-01), Schardt
patent: 4635293 (1987-01-01), Watanabe
patent: 4736399 (1988-04-01), Okazaki
patent: 4802093 (1989-01-01), Ema
patent: 4870692 (1989-09-01), Zuiderveld et al.
patent: 4975976 (1990-12-01), Kimata et al.
patent: 5048103 (1991-09-01), Leclerc et al.

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